Document:

EX-10.1

 Exhibit 10.1 

EXECUTION VERSION 
 T-MOBILE USA, INC. 
 $1,000,000,000 4.500% Senior Notes due 2026 

$1,500,000,000 4.750% Senior Notes due 2028 

Purchase Agreement 

January 22, 2018 
 Deutsche Telekom AG 

Friedrich-Ebert-Allee 140 
 53113 Bonn 

Germany 
 Ladies and Gentlemen: 

T-Mobile USA, Inc., a Delaware corporation (the “Company”), proposes to issue and sell to
Deutsche Telekom AG (the “Purchaser”) $1,000,000,000 principal amount of its 4.500% Senior Notes due 2026-1 (the “2026 Notes”) and $1,500,000,000 principal
amount of its 4.750% Senior Notes due 2028-1 (the “2028 Notes”). The 2026 Notes and the 2028 Notes are collectively referred to herein as the “Notes”; and the
Notes together with the Guarantees (as defined below) are, together, referred to herein as the “Securities”. The Securities will be issued under the Indenture, dated as of April 28, 2013 (as previously amended, the
“Base Indenture”), and a supplemental indenture with respect to each of the 2026 Notes and the 2028 Notes, each to be dated as of the Closing Date (as defined below) and substantially containing the terms and conditions set
forth in the Description of Notes attached hereto as Exhibit A (the “Description of Notes”) to be executed in form and substance satisfactory to the parties hereto on or prior to the Closing Date (the
“Supplemental Indentures” and, together with the Base Indenture, the “Indenture”), each among the Company, T-Mobile US, Inc., a Delaware corporation
(“Parent”), Deutsche Bank Trust Company Americas, as trustee (the “Trustee”), and the other Guarantors (as defined below) party thereto. 

The 2026 Notes and the 2028 Notes will have substantially the same terms and conditions as the Company’s 4.500% Senior Notes due 2026 and 4.750% Senior
Notes due 2028 (collectively, the “Public Notes”), respectively, in each case, other than issue date, issue price, registration rights and CUSIP number. In addition, each of the 2026 Notes and the 2028 Notes will be issued
under a Supplemental Indenture and will each constitute a separate series from the Public Notes for all purposes, including voting; provided that, if the Company exercises its rights in respect of a series of Public Notes, the Company will
exercise the same rights in respect of the Notes of the corresponding series on an equal and ratable basis. 
 The Notes will be sold to the Purchaser
without being registered under the Securities Act of 1933, as amended (the “Securities Act”) in reliance upon an exemption therefrom. 

 The payment of principal of, and premium and interest on, the Notes will be fully and unconditionally guaranteed
on a senior unsecured basis, jointly and severally, by (i) Parent, (ii) each of the Company’s subsidiaries listed on Schedule 1 hereto, and (iii) any subsidiary of the Company or Parent formed or acquired after the Closing Date
that executes an additional guarantee in accordance with the terms of the Indenture, and respective successors and assigns of Parent and the subsidiaries of the Company or Parent referred to in (ii) and (iii) above ((i)–(iii) collectively,
the “Guarantors”), pursuant to their guarantees (the “Guarantees”). 
 The Purchaser is entitled to the
benefits of the Stockholder’s Agreement, dated as of April 30, 2013 (the “Stockholder’s Agreement”), pursuant to which Parent has agreed to file one or more registration statements with the Securities and
Exchange Commission (the “Commission”) providing for the registration under the Securities Act of the Securities. 
 As used in this
Agreement, the term “Transaction Documents” collectively refers to this Agreement, the Indenture, the Stockholder’s Agreement and the Securities. 

1. Purchase of the Securities. 
 (a) The
Company, subject to the conditions set forth in Sections 5 and 6 of this Agreement, agrees to issue and sell (i) the 2026 Notes in an aggregate principal amount of $1,000,000,000 and (ii) the 2028 Notes in an aggregate principal amount of
$1,500,000,000 to the Purchaser as provided in this Purchase Agreement (this “Agreement”), and the Purchaser agrees to purchase from the Company the 2026 Notes at a price equal to 100% of the principal amount thereof and the
2028 Notes at a price equal to 100% of the principal amount thereof (with the consideration therefor delivered in the form contemplated by Section 2 hereof). The Company will not be obligated to deliver any of the Notes except upon payment and
delivery of the Purchaser Exchange Notes (as defined below) for all the Notes to be purchased as provided herein. 
 (b) The Purchaser
represents, warrants and agrees that: 
 (i) Offshore Transaction. The Purchaser is located outside the United States
and is purchasing the Notes in an “offshore transaction” as defined in Regulation S. 
 (ii) Restricted
Notes. The Purchaser (i) acknowledges that the issuance of the Notes has not been registered or qualified under the Securities Act or any state securities laws, and the Notes are being offered and sold in reliance upon exemptions provided
in the Securities Act and state securities laws for transactions not involving any public offering and, therefore, cannot be sold, transferred, offered for sale, pledged, hypothecated or otherwise disposed of unless they are subsequently registered
and qualified under the Securities Act and applicable state laws or unless an exemption from such registration and qualification is available, and that the Notes will bear a legend to such effect, (ii) is purchasing the Notes without any
intention of selling, distributing or otherwise disposing of the Notes in a manner that would violate the registration requirements of the Securities Act and (iii) agrees that all offers and sales of the Notes prior to the expiration of 40 days
from the Closing Date shall be made only in accordance with Rules 903 or 904 under the Securities Act, pursuant to registration of the Securities under the Securities Act or pursuant to an available exemption from the registration requirements of
the Securities Act. The Purchaser confirms to the Company that it has 

  
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such knowledge and experience in business matters that the Purchaser is capable of evaluating the merits and risks of an investment in the Notes and of making an informed investment decision and
understands that (x) this investment is suitable only for an investor which is able to bear the economic consequences of losing its entire investment and (y) the purchase of the Notes by the Purchaser is a speculative investment which
involves a high degree of risk of loss of the entire investment. 
 (iii) Adequate Information; No Reliance. The
Purchaser acknowledges and agrees that (i) the Purchaser has been furnished with all materials it considers relevant to making an investment decision to purchase the Notes and has had the opportunity to review the Company’s filings and
submissions with the Commission, including, without limitation, all information filed or furnished pursuant to the Securities Exchange Act of 1934, as amended (the “Exchange Act”), (ii) the Purchaser has had a full
opportunity to ask questions of the Company concerning the Company, its business, operations, financial performance, financial condition and prospects, and the terms and conditions of the Notes, and (iii) the Purchaser has had the opportunity
to consult with its accounting, tax, financial and legal advisors to be able to evaluate the risks involved in the purchase of the Notes and to make an informed investment decision with respect to the purchase of the Notes. The Purchaser understands
that nothing in this Agreement or any other materials presented to the Purchaser in connection with the purchase and sale of the Notes constitutes legal, tax or investment advice. The Purchaser has consulted such legal, tax and investment advisors
and made such investigation as it, in its sole discretion, has deemed necessary or appropriate in connection with its purchase of the Notes. 

(iv) No Public Market. The Purchaser understands that no public market exists for the Notes, and that there is no
assurance that a public market will ever develop for the Notes. 
 2. Payment and Delivery. 

(a) Payment for the Notes will be made by the Purchaser by delivery, by the Purchaser to the Company for cancellation, of $1,250,000,000.00 in
aggregate principal amount of the Company’s 8.097% Senior Reset Notes due 2021 (the “2021 Notes”) and $1,250,000,000.00 in aggregate principal amount of the Company’s 8.195% Senior
Reset Notes due 2022 (the “2022 Notes”; such 2021 Notes and 2022 Notes to be delivered by the Purchaser to the Company for cancellation, the “Purchaser Exchange Notes”)
held by the Purchaser on April 30, 2018 (the “Closing Date”) by which the Purchaser shall be deemed to have paid the purchase price for the Notes in an amount of $2,500,000,000.00 and shall not be required to advance the
principal amount of the Notes in such amount (i.e., so that there is no movement of cash from the Purchaser to the Company with respect to the Purchaser’s obligations pursuant to the purchase of the Notes). On the Closing Date, the Company will
deliver to the Trustee, for the account of the Purchaser, one or more definitive certificates evidencing the 2026 Notes and the 2028 Notes. 

  
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 (b) The payment for and delivery of the Notes pursuant to clause (a) of this Section 2
will occur at the offices of Fried, Frank, Harris, Shriver & Jacobson LLP, One New York Plaza, New York, New York 10004, at 10:00 AM, New York City time. Interest on the Notes will accrue from and after the Closing Date. 

(c) The Company shall duly pay any transfer taxes payable in connection with the sale of the Notes to the Purchaser by the Company. The
Purchaser shall be responsible for any transfer taxes due on any subsequent resales of the Notes. 
 3. Representations and Warranties of the
Company. The Company and the Guarantors jointly and severally represent and warrant to the Purchaser as of the date hereof (or such other date as is expressly stated herein): 

(a) Time of Sale Information. The information (the “Public Information”) about Parent and each of Parent’s
subsidiaries listed on Schedule 2 hereto (the “Subsidiaries”) set forth in Parent’s public filings with the Commission made at or prior to 3:40 PM, New York City time on the date hereof (the “Time of
Sale”, and such information, the “Time of Sale Information”) did not contain any untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary in order to make
the statements therein, in the light of the circumstances under which they were made, not misleading; provided that the Company and the Guarantors make no representation or warranty with respect to any statements or omissions made in reliance
upon and in conformity with information relating to the Purchaser furnished to the Company in writing by the Purchaser expressly for use in the Time of Sale Information. 

(b) Incorporated Documents. The documents constituting the Public Information, when they became effective or were filed with the
Commission, as the case may be, conformed in all material respects with the requirements of the Securities Act or the Exchange Act, as applicable, and the rules and regulations of the Commission thereunder, and did not and do not contain any untrue
statement of a material fact or omit to state a material fact required to be stated therein or necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading. 

(c) Organization and Good Standing. As of the date of this Agreement and the Closing Date, each of the Company and the Guarantors
(i) has been, or will be, as applicable, duly organized and is, or will be, as applicable, validly existing as a corporation, partnership or limited liability company in good standing under the laws of its jurisdiction of organization,
(ii) has, or will have, as applicable, all requisite power and authority to carry on its business as it is currently being conducted and as described in the Time of Sale Information, and to own, lease and operate its respective properties and
(iii) is, or will be, as applicable, duly qualified and authorized to do business and is, or will be, as applicable, in good standing as a foreign corporation, partnership or limited liability company in each jurisdiction in which the character
or location of its properties (owned, leased or licensed) or the nature or conduct of its business makes such qualification necessary, except for those failures to be so qualified or in good standing which (individually or in the aggregate) would
not reasonably be expected to have a material adverse effect on (A) the business, assets, financial condition, results of operations, or properties of the Company and the Guarantors, taken as a whole, (B) the long-term debt or capital
stock of Parent or any Subsidiary, (C) the issuance of the Notes or the related Guarantees or (D) the validity of this Agreement or any other Transaction Document or the transactions described in the Time of Sale Information. 

  
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 (d) Due Authorization; Execution and Delivery. The Company and each of the Guarantors has
and will have on the Closing Date the required corporate, limited liability company or partnership power and authority to perform its obligations under this Agreement and to execute, deliver and perform its obligations under each of the Transaction
Documents to which it is a party and to consummate the transactions contemplated hereby and thereby. 
 (e) The Notes and the
Guarantees. The Notes have been duly authorized by the Company and, when duly executed, authenticated, issued and delivered by the Company as provided in the Indenture and paid for by the Purchaser in accordance with the terms hereof will
constitute valid and legally binding obligations of the Company enforceable against the Company in accordance with their terms, subject to the effect of (i) bankruptcy, insolvency, fraudulent conveyance, reorganization, moratorium or other
similar laws now or hereafter in effect relating to or affecting creditors’ rights generally and (ii) general principles of equity (regardless of whether such enforcement is considered in a proceeding at law or in equity) (clauses
(i) and (ii) are referred to herein collectively as the “Enforceability Exceptions”), and will be entitled to the benefits of the Indenture; and the Guarantees have been duly and validly authorized by each of the
Guarantors for issuance to the Purchaser pursuant to this Agreement and, when executed by the respective Guarantors in accordance with the provisions of the Indenture and when delivered to the Purchaser in accordance with the terms hereof and
thereof, and when the Notes have been issued and authenticated in accordance with the provisions of the Indenture and delivered to and paid for by the Purchaser in accordance with the terms hereof and thereof, will constitute valid and legally
binding obligations of each of the Guarantors, entitled to the benefits of the Indenture and enforceable against each of them in accordance with their terms, subject to the effect of the Enforceability Exceptions. 

(f) The Indenture. The Base Indenture has been duly and validly authorized by the Company and each Guarantor party thereto and
(assuming the due authorization, execution and delivery by the Trustee) constitutes a valid and legally binding agreement of the Company and each Guarantor party thereto , enforceable against each of them in accordance with its terms, subject to the
effect of the Enforceability Exceptions. Each of the Supplemental Indentures has been duly and validly authorized by the Company and each of the Guarantors and, when duly executed and delivered by the Company and each Guarantor and (assuming the due
authorization, execution and delivery by the Trustee), will constitute a valid and legally binding agreement of the Company and each Guarantor, enforceable against each of them in accordance with its terms, subject to the effect of the
Enforceability Exceptions. The Indenture conforms in all material respects to the applicable requirements of the Trust Indenture Act of 1939, as amended (the “Trust Indenture Act”) and the rules and regulations of the
Commission applicable to an indenture that is qualified thereunder. 
 (g) The Purchase Agreement and Stockholder’s Agreement.
This Agreement has been duly and validly authorized, executed and delivered by the Company and each Guarantor and constitutes a valid and legally binding agreement of the Company and each Guarantor enforceable against the Company and each Guarantor
in accordance with its terms, subject to the Enforceability Exceptions; and the Stockholder’s Agreement has been duly authorized and duly executed and delivered by Parent and constitutes a valid and legally binding agreement of Parent
enforceable against Parent in accordance with its terms, subject to the Enforceability Exceptions, and except that rights to indemnity and contribution thereunder may be limited by applicable law and public policy. 

  
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 (h) Investment Company Act. Each of the Company and each Guarantor is not now and, after
completion of the sale of the Notes as contemplated hereunder will not be, required to register as an “investment company” under the Investment Company Act of 1940, as amended (the “Investment Company Act”). 

(i) Margin Rules. Neither the issuance, sale and delivery of the Notes nor the application of the proceeds thereof by the Company as
described in Section 4(b) of this Agreement will violate Regulation T, U or X of the Board of Governors of the Federal Reserve System or any other regulation of such Board of Governors. 

(j) Solvency. The Company and the Guarantors, on a consolidated basis, are not, nor will the Company and the Guarantors, on a
consolidated basis, be, after giving effect to the performance of this Agreement and the execution, delivery and performance of the Transaction Documents and the consummation of the transactions contemplated hereby and thereby, (i) left with
unreasonably small capital with which to carry on their businesses as proposed to be conducted, (ii) unable to pay their debts (contingent or otherwise) as they mature or (iii) insolvent. The fair value and present fair saleable value of
the assets of the Company and the Guarantors, on a consolidated basis, exceeds the amount that will be required to be paid on or in respect of their existing debts and other liabilities (including contingent liabilities) as they become absolute and
matured. 
 (k) No Broker’s Fees. There are no contracts, agreements or understandings between or among Parent and the
Subsidiaries, and any other person that would give rise to a valid claim against Parent or any Subsidiary or the Purchaser for a brokerage commission, finder’s fee or like payment in connection with the sale of the Notes. 

(l) No General Solicitation or Directed Selling Efforts. None of the Company nor any of its controlled affiliates or any other person
acting on its or their behalf (other than the Purchaser, as to which no representation is made) has (i) solicited offers for, or offered or sold, the Notes by means of any form of general solicitation or general advertising within the meaning
of Rule 502(c) of Regulation D or in any manner involving a public offering within the meaning of Section 4(a)(2) of the Securities Act or (ii) engaged in any directed selling efforts with respect to the Notes within the meaning of
Regulation S under the Securities Act (“Regulation S”), and all such persons have complied with the offering restrictions requirement of Regulation S with respect to the Notes. 

(m) Securities Law Exemptions. Assuming the accuracy of the representations and warranties of the Purchaser contained in
Section 1(b) and its compliance with its agreements set forth therein, it is not necessary, in connection with the issuance and sale of the Notes to the Purchaser to register the sale of the Notes of the Purchaser under the
Securities Act or to qualify the Indenture under the Trust Indenture Act. 

  
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 (n) No Conflicts; No Consents Required. None of (i) the execution, delivery and
performance by the Company and each Guarantor, as applicable, of this Agreement, the Indenture and the consummation of the transactions contemplated by the Transaction Documents to which each of them, respectively, is a party nor (ii) the
issuance and sale of the Notes and the issuance of the Guarantees violates or will violate, conflicts with or will conflict with, requires or will require consent under, or results or will result in a breach of any of the terms and provisions of, or
constitutes or will constitute a default (or an event which with notice or lapse of time, or both, would constitute a default) under, or results or will result in the creation or imposition of any “Lien” (as defined in the Indenture) upon
any property or assets of the Company or any Guarantor, or an acceleration of any “Indebtedness” (as defined in the Indenture) of the Company or any Guarantor pursuant to (A) any provision of the certificate or articles of
incorporation, by-laws, certificate of formation, limited liability company agreement, partnership agreement or other organizational documents of the Company or any Guarantor, (B) any bond, debenture,
note, indenture, mortgage, deed of trust, loan agreement or other agreement, instrument, franchise, license or permit to which the Company or any Guarantor is a party or by which the Company or any Guarantor or their respective properties,
operations or assets is or may be bound or (C) any statute, law, rule, regulation, ordinance, directive, judgment, decree or order of any judicial, regulatory or other legal or governmental agency or body, domestic or foreign, except in the
case of clauses (B) and (C) above as would not reasonably be expected to have a material adverse effect. 
 (o) Compliance with
Money Laundering Laws. The operations of Parent and its Subsidiaries are and have been conducted at all times in compliance in all material respects with applicable financial recordkeeping and reporting requirements, including those of the
Currency and Foreign Transactions Reporting Act of 1970, as amended, the applicable money laundering statutes of all jurisdictions where Parent and the Subsidiaries conduct business, the rules and regulations thereunder and any related or similar
rules, regulations or guidelines issued, administered or enforced by any governmental agency (collectively, the “Anti-Money Laundering Laws”) and no action, suit or proceeding by or before any court or governmental agency,
authority or body or any arbitrator involving Parent or any Subsidiary with respect to the Anti-Money Laundering Laws is pending or, to the Company’s and the Guarantors’ knowledge, threatened. 

(p) No Conflicts with Sanctions Laws. None of Parent, any of its Subsidiaries, or, to the Company’s and the Guarantors’
knowledge, any director, officer, agent, employee or controlled affiliate of Parent or any of its Subsidiaries is currently the subject or the target of any sanctions administered or enforced by the U.S. Government (including, without limitation,
the Office of Foreign Assets Control of the U.S. Department of the Treasury or the U.S. Department of State and including, without limitation, the designation as a “specially designated national” or “blocked person”), the United
Nations Security Council, the European Union, Her Majesty’s Treasury, or other applicable sanctions authority (collectively, “Sanctions”), nor is Parent or any of its Subsidiaries located, organized or resident in a
country or territory that is the subject or the target of Sanctions, including, without limitation, Cuba, Iran, North Korea, Syria and Crimea (each, a “Sanctioned Country”); and the Company will not directly or indirectly use
the proceeds from the sale of the Notes hereunder, or lend, contribute or otherwise make available such proceeds to any subsidiary, joint venture partner or other person or entity, (i) to finance or facilitate the activities of any person
subject to any Sanctions, (ii) to fund or facilitate any activities of or business in any Sanctioned Country or (iii) in any other manner that will result in a violation by the Purchaser of Sanctions. For the past 5 years, Parent
and its Subsidiaries have not knowingly engaged in and are not now knowingly engaged in any dealings or transactions with any person that is the subject of any Sanctions or with any Sanctioned Country. 

  
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 (q) Foreign Corrupt Practices Act Matters. Neither Parent nor any of its Subsidiaries nor,
to the knowledge of the Company and the Guarantors, any director, officer, agent, employee or controlled affiliate of Parent or any of its Subsidiaries has (i) used any corporate funds for any unlawful contribution, gift, entertainment or other
unlawful expense relating to political activity; (ii) made or taken an act in furtherance of an offer, promise or authorization of any direct or indirect unlawful payment or benefit to any foreign or domestic government official or employee,
including of any government- owned or controlled entity or of a public international organization, or any person acting in an official capacity for or on behalf of any of the foregoing, or any political party or party official or candidate for
political office; (iii) violated or is in violation of any provision of the Foreign Corrupt Practices Act of 1977 or any other applicable anti-bribery or anti-corruption laws; or (iv) made, offered, agreed, requested or taken an act in
furtherance of any unlawful bribe or other unlawful benefit, including, without limitation, any unlawful rebate, payoff, influence payment, kickback or other unlawful or improper payment or benefit. Parent and the Subsidiaries have instituted,
maintain and enforce policies and procedures designed to promote and ensure compliance with all applicable anti-bribery and anti-corruption laws. 
 Any
certificate signed by or on behalf of the Company or any Guarantor and delivered to the Purchaser or to counsel for the Purchaser pursuant to this Agreement or any of the other Transaction Documents shall be deemed to be a representation and
warranty by the Company or such Guarantor, as the case may be, to the Purchaser as to the matters covered thereby and not a personal representation or warranty by the person executing such certificate. 

4. Further Agreements of the Company and the Guarantors. The Company and each of the Guarantors jointly and severally covenant and agree with
the Purchaser that: 
 (a) Notice to the Purchaser. The Company will advise the Purchaser promptly, and confirm such advice in
writing, (i) of the issuances by any governmental or regulatory authority of any order preventing or suspending the use of any of the Public Information or the initiation or threatening of any proceeding for that purpose; and the Company will
use commercially reasonable efforts to prevent the issuance of any such order preventing or suspending the use of the Public Information and, if any such order is issued, will use commercially reasonable efforts to obtain as soon as possible the
withdrawal thereof, (ii) of the occurrence of any event at any time prior to the Closing Date as a result of which any of the Public Information, as then amended or supplemented, would include any untrue statement of a material fact or omit to
state a material fact required to be stated therein or necessary in order to make the statements therein, in the light of the circumstances existing when such Public Information is filed with the Commission or delivered to the Purchaser, not
misleading, (iii) of the receipt by the Company of any notice with respect to any suspension of the qualification of the Notes for offer and sale in any jurisdiction or the initiation or threatening of any proceeding for such purpose; and the
Company will use commercially reasonable efforts to prevent the issuance of any such order suspending any such qualification of the Notes and, if any such order is issued, will use commercially reasonable efforts to obtain as soon as possible the
withdrawal thereof, and (iv) the occurrence of any actual or potential Legal Impediment (as defined herein). 

  
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 (b) Use of Proceeds. The Company will apply the net proceeds from the sale of the Notes to
refinance existing indebtedness as described in Section 2(a) of this Agreement. 
 (c) Supplying Information. While the Notes
remain outstanding and (i) are “restricted securities” within the meaning of Rule 144(a)(3) under the Securities Act and (ii) any of the Notes are beneficially owned by the Purchaser or any of the Purchaser’s affiliates, the
Company and each of the Guarantors will, during any period in which the Company is not subject to and in compliance with Section 13 or 15(d) of the Exchange Act, furnish to holders of the Notes and prospective purchasers of the Notes designated
by such holders, upon the request of such holders or such prospective purchasers, the information required to be delivered pursuant to Rule 144A(d)(4) under the Securities Act. 

(d) DTC. The Company will assist the Purchaser, to the extent requested, in arranging for the Notes to be eligible for clearance and
settlement through The Depository Trust Company (“DTC”). 
 (e) No Integration. Neither the Company nor any
of its controlled affiliates (as defined in Rule 501(b) of Regulation D) will, directly or through any agent, sell, offer for sale, solicit offers to buy or otherwise negotiate in respect of, any security (as defined in the Securities Act), that is
or will be integrated with the sale of the Notes in a manner that would require registration of the Notes under the Securities Act. 
 (f)
No Directed Selling Efforts. None of the Company nor any of its affiliates nor any other person acting on its or their behalf (other than the Purchaser, as to which no covenant is given) will engage in any directed selling efforts with
respect to the Notes within the meaning of Regulation S, and all such persons will comply with the offering restrictions requirement of Regulation S with respect to the Notes. 

(g) Supplemental Indentures. On the Closing Date, a Company Order (as defined in the Base Indenture) instructing the Trustee to
authenticate the Notes for issuance, and the Supplemental Indentures relating to the Notes, shall be duly executed and delivered by a duly authorized officer of the Company and each of the Guarantors, the Notes shall be duly executed and delivered
by a duly authorized officer of the Company and authenticated by the Trustee and the Guarantees shall have been duly executed and delivered by a duly authorized officer of each of the Guarantors. 

(h) Notes Redemption. On or prior to March 29, 2018, the Company will deliver to the Purchaser (with copy to the Trustee) notices
of redemption with respect to the 2021 Notes and the 2022 Notes in accordance with the respective Sec. 3.01 of the indentures governing the 2021 Notes (the “2021 Notes Indenture”) and the 2022 Notes (the “2022
Notes Indenture”) and Section 5 of the respective Purchaser Exchange Notes. For the avoidance of doubt, if any redemption date specified in any such notice of redemption falls on a day that is not a Business Day (as defined under
the 2021 Notes Indenture or the 2022 Notes Indenture, as applicable), the 2021 Notes and 2022 Notes shall be delivered for redemption on the next succeeding business day, and no interest shall accrue thereon for the intervening period. In accordance
with Section 2(a) of this Agreement the Purchaser Exchange Notes shall be delivered by the Purchaser to the Company on the Closing Date in exchange for the delivery of the Notes and therefore the

  
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Company shall not redeem the Purchaser Exchange Notes but shall pay to the Purchaser the redemption price for the Purchaser Exchange Notes set forth in the 2021 Notes Indenture and 2022 Notes
Indenture, as applicable, less the principal amount of the Purchaser Exchange Notes, plus accrued and unpaid interest on the Purchaser Exchange Notes to, but not including, the Closing Date. 

5. Conditions of Purchaser’s Obligations. The obligation of the Purchaser to purchase the Notes on the Closing Date, as provided herein, is
subject to the performance by the Company and the Guarantors of their respective covenants and other obligations under Sections 1(a), 4(g) and 4(h) hereof and to the following additional conditions: 

(a) Representations and Warranties. The representations and warranties of the Company set forth in Sections 3(a) and
(b) of this Agreement shall be true and correct as of the dates specified therein and the representations and warranties of the Company set forth in Sections 3(c) through (g) of this Agreement shall be
true and correct as of the Closing Date; 
 (b) No Legal Impediment to Issuance. No action shall have been taken and no statute,
rule, regulation or order shall have been enacted, adopted or issued by any federal, state or foreign governmental or regulatory authority that would, as of the Closing Date, prohibit the issuance or sale of the Notes or the issuance of the
Guarantees; and no injunction or order of any federal, state or foreign court shall have been issued that would, as of the Closing Date, prohibit the issuance or sale of the Notes or the issuance of the Guarantees (each, a “Legal
Impediment”); and 
 (c) Legal Opinion. The Purchaser shall have received a letter from Fried, Frank, Harris,
Shriver & Jacobson LLP, counsel for the Company, entitling Purchaser to rely on any opinion of counsel issued by Fried, Frank, Harris, Shriver & Jacobson LLP to the Trustee in connection with the issuance of the Notes. 

6. Conditions of Company’s Obligations. The obligation of the Company to issue and sell Notes on the Closing Date as provided herein is
subject to the performance by the Purchaser of its covenants and other obligations hereunder and to the following additional conditions: 

(a) Representations and Warranties. The representations and warranties of the Purchaser set forth in Section 1(b)
of this Agreement shall be true and correct on the date of this Agreement and the Closing Date. 
 (b) No Legal Impediment to
Issuance. No Legal Impediment shall have occurred;  
 provided that the Company, in its sole discretion, may waive (in whole or in
part) any failure by the Purchaser to perform its covenants and other obligations hereunder or any of the foregoing additional conditions. 
 7.
Effectiveness of Agreement; Closing Date Deliverables. This Agreement shall become effective upon the execution and delivery of a counterpart hereof by each of the parties hereto. 

  
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 8. Payment of Expenses. Whether or not the transactions contemplated by this Agreement are
consummated, the Company and each of the Guarantors jointly and severally agree with the Purchaser to pay or cause to be paid all costs and expenses incident to the performance of their respective obligations hereunder, including without limitation,
(i) the costs incident to the authorization, issuance, sale, preparation, and delivery of the Notes and the issuance of the Guarantees; (ii) the fees and expenses of the Company’s and the Guarantors’ counsel and independent
accountants; and (iii) the fees and expenses of the Trustee and any paying agent (including related fees and expenses of any outside counsel to such parties). Except as contemplated otherwise in this Agreement or the Stockholder’s
Agreement, the Company shall not be obligated in any manner to pay or reimburse any expenses or other costs of the Purchaser, including, but not limited to, the costs and expenses of the Purchaser’s legal counsel or any costs incurred by the
Purchaser in connection with the transactions contemplated hereby. 
 9. No Assignment; Persons Entitled to Benefit of Agreement. No party
shall be permitted to assign its rights or obligations under this Agreement without the consent of all other parties. This Agreement shall inure to the benefit of and be binding upon the parties hereto and their respective successors. Nothing in
this Agreement is intended or shall be construed to give any other person any legal or equitable right, remedy or claim under or in respect of this Agreement or any provision contained herein. No purchaser of Notes from the Purchaser shall be deemed
to be a successor merely by reason of such purchase. 
 10. Default by Purchaser. If the Purchaser shall fail to purchase and pay for any of
the Notes agreed to be purchased by the Purchaser hereunder and such failure to purchase shall constitute a default in the performance of its obligations under this Agreement, the Company shall be entitled to seek specific performance of the
Purchaser’s obligation to purchase and pay for the Notes in addition to any other remedies available to the Company at law or in equity. 
 11.
Term; Survival. This Agreement shall terminate upon the delivery of and payment (including, for the avoidance of doubt, delivery of the Purchaser Exchange Notes) for the Notes in accordance with Section 2. The representations, warranties
and agreements of the Company, the Guarantors and the Purchaser contained in this Agreement or made by or on behalf of the Company, the Guarantors or the Purchaser pursuant to this Agreement or any certificate delivered pursuant hereto shall survive
such termination and shall remain in full force and effect, regardless of any investigation made by or on behalf of the Company, the Guarantors or the Purchaser. 

12. Registration Rights. Notwithstanding anything in the Stockholder’s Agreement to the contrary, Parent shall not be required to file a
registration statement with the Commission providing for the registration under the Securities Act of the Securities prior to the date that is six months after the Closing Date, with respect to the Notes. 

13. Additional Disclosures. Purchaser shall be deemed to have received any information filed by Parent or the Company with the Commission
subsequent to the date of this Agreement and prior to the Closing Date. The Company may elect in its sole discretion to deliver to the Purchaser at any time prior to the Closing Date one or more disclosure schedules (the “Disclosure
Schedules”). Any such Disclosure Schedules may be designated by the Company as confidential, in which case Purchaser shall keep such information confidential until the Company or Parent elects in its sole discretion to release such
information. 

  
 11 

 14. Certain Defined Terms. For purposes of this Agreement, (a) except where otherwise
expressly provided, the term “affiliate” has the meaning set forth in Rule 405 under the Securities Act and (b) the term “business day” means any day other than a day on which banks are permitted
or required to be closed in New York City or Bonn, Germany. 
 15. Miscellaneous. 

(a) Notices. 

(i) Subject to subsection (ii) below, all notices and other communications hereunder shall be in writing and shall be
deemed to have been duly given if mailed or transmitted by any standard form of telecommunication. Notices to the Purchaser shall be mailed, delivered, couriered or faxed to Deutsche Telekom AG, Friedrich-Ebert-Allee 140, 53113 Bonn, Germany,
Attention: Group Treasurer (Fax: +49 228 181 84088) and with a copy to Deutsche Telekom AG, Friedrich-Ebert-Allee 140, 53113 Bonn, Germany, Attention: General Counsel (Fax: +49 228 181 74006). If sent to the Company and the Guarantors, all
communications hereunder shall be mailed, delivered, couriered or faxed to T-Mobile USA, Inc., 12920 SE 38th Street, Bellevue, Washington 98006, Attention: General Counsel, and with a copy to Fried, Frank,
Harris, Shriver & Jacobson LLP, One New York Plaza, New York, New York 10004, Attention: Daniel J. Bursky and Mark Hayek. 
 (b)
Governing Law and Jurisdiction. This Agreement and any claim, controversy or dispute arising under or related to this Agreement shall be governed by and construed in accordance with the laws of the State of New York, without regard to the
conflict of laws provisions thereof. Each of the parties hereto agrees that any suit, action or proceeding against it brought by any of the other parties hereto or any of the other parties’ directors, officers, employees or agents or by any
person who controls such other party, arising out of or based upon this Agreement or the transactions contemplated hereby may be instituted in any state or federal court in the Borough of Manhattan in The City of New York, New York, and waives any
objection which it may now or hereafter have to the laying of venue of any such proceeding, and irrevocably submits to the non-exclusive jurisdiction of such court in any suit, action or proceeding. 

(c) Waiver of Jury Trial. Each of the parties hereto hereby waives any right to trial by jury in any suit or proceeding arising out of
or relating to this Agreement. 
 (d) Counterparts. This Agreement may be signed in counterparts (which may include counterparts
delivered by any standard form of telecommunication), each of which shall be an original and all of which together shall constitute one and the same instrument. 

(e) Amendments or Waivers. No amendment or waiver of any provision of this Agreement, nor any consent or approval to any departure
therefrom, shall in any event be effective unless the same shall be in writing and signed by the parties hereto. 
 (f) Headings. The
headings herein are included for convenience of reference only and are not intended to be part of, or to affect the meaning or interpretation of, this Agreement. 

  
 12 

 (g) Entire Agreement. This Agreement constitutes the entire agreement among the parties
hereto and supersedes all prior and contemporaneous agreements, understandings and arrangements, oral or written, among the parties hereto with respect to the subject matter hereof. 

[Remainder of Page Intentionally Left Blank] 

  
 13 

 If the foregoing is in accordance with your understanding, please indicate your acceptance of this Agreement by
signing in the space provided below. 
  

			
	Very truly yours,
	
	T-MOBILE USA, INC.
		
	By:	 	/s/ J. Braxton Carter
	Name:	 	J. Braxton Carter
	Title:	 	Executive Vice President and
		 	Chief Financial Officer

 [Purchase Agreement] 

  

 
			
	IBSV LLC
	IOWA WIRELESS SERVICES, LLC
	IOWA WIRELESS SERVICES HOLDING CORPORATION
	METROPCS CALIFORNIA, LLC
	METROPCS FLORIDA, LLC
	METROPCS GEORGIA, LLC
	METROPCS MASSACHUSETTS, LLC
	METROPCS MICHIGAN, LLC
	METROPCS NETWORKS CALIFORNIA, LLC
	METROPCS NETWORKS FLORIDA, LLC
	METROPCS NEVADA, LLC
	METROPCS NEW YORK, LLC
	METROPCS PENNSYLVANIA, LLC
	METROPCS TEXAS, LLC
	 POWERTEL MEMPHIS LICENSES, INC.

	POWERTEL/MEMPHIS, INC.
	SUNCOM WIRELESS HOLDINGS, INC.
	SUNCOM WIRELESS INVESTMENT COMPANY LLC
	SUNCOM WIRELESS LICENSE COMPANY, LLC
	SUNCOM WIRELESS MANAGEMENT COMPANY, INC.
	SUNCOM WIRELESS OPERATING COMPANY, L.L.C.
	SUNCOM WIRELESS PROPERTY COMPANY, L.L.C.
	SUNCOM WIRELESS, INC.
	T-MOBILE CENTRAL LLC
	T-MOBILE FINANCIAL LLC
	T-MOBILE LEASING LLC
	T-MOBILE LICENSE LLC
	T-MOBILE NORTHEAST LLC
	T-MOBILE PCS HOLDINGS LLC
	T-MOBILE PUERTO RICO HOLDINGS LLC
	T-MOBILE PUERTO RICO LLC
	T-MOBILE RESOURCES CORPORATION
	T-MOBILE SOUTH LLC
	T-MOBILE SUBSIDIARY IV CORPORATION
	T-MOBILE US, INC.
	T-MOBILE WEST LLC
	TRITON PCS FINANCE COMPANY, INC.
	TRITON PCS HOLDINGS COMPANY L.L.C.
	VOICESTREAM PCS I IOWA CORPORATION
		
	By:	 	/s/ J. Braxton Carter
	Name:	 	J. Braxton Carter
	Title:	 	Authorized Person

 [Purchase Agreement] 

  

 Accepted: January 22, 2018 
  

			
	DEUTSCHE TELEKOM AG
		
	By:	 	/s/ Juergen Kistner
	Name	 	Juergen Kistner
	Title:	 	Vice President GTR-CFT

  

			
	DEUTSCHE TELEKOM AG
		
	By:	 	/s/ Markus Schäfer
	Name:	 	Markus Schäfer
	Title:	 	VP GTR-MKT

 [Purchase Agreement] 

  

 Schedule 1 

GUARANTORS 
  

			
	 Entity
	  	 Jurisdiction of Organization

	 IBSV LLC
	  	Delaware
	 Iowa Wireless Services, LLC
	  	Delaware
	 Iowa Wireless Services Holding Corporation
	  	Delaware
	 MetroPCS California, LLC
	  	Delaware
	 MetroPCS Florida, LLC
	  	Delaware
	 MetroPCS Georgia, LLC
	  	Delaware
	 MetroPCS Massachusetts, LLC
	  	Delaware
	 MetroPCS Michigan, LLC
	  	Delaware
	 MetroPCS Networks California, LLC
	  	Delaware
	 MetroPCS Networks Florida, LLC
	  	Delaware
	 MetroPCS Nevada, LLC
	  	Delaware
	 MetroPCS New York, LLC
	  	Delaware
	 MetroPCS Pennsylvania, LLC
	  	Delaware
	 MetroPCS Texas, LLC
	  	Delaware
	 Powertel Memphis Licenses, Inc.
	  	Delaware
	 Powertel/Memphis, Inc.
	  	Delaware
	 SunCom Wireless Holdings, Inc.
	  	Delaware
	 SunCom Wireless Investment Company LLC
	  	Delaware
	 SunCom Wireless License Company, LLC
	  	Delaware
	 SunCom Wireless Management Company, Inc.
	  	Delaware
	 SunCom Wireless Operating Company, L.L.C.
	  	Delaware
	 SunCom Wireless Property Company, L.L.C.
	  	Delaware
	 SunCom Wireless, Inc.
	  	Delaware
	 T-Mobile Central LLC
	  	Delaware
	 T-Mobile Financial LLC
	  	Delaware
	 T-Mobile Leasing LLC
	  	Delaware
	 T-Mobile License LLC
	  	Delaware
	 T-Mobile Northeast LLC
	  	Delaware
	 T-Mobile PCS Holdings LLC
	  	Delaware
	 T-Mobile Puerto Rico Holdings LLC
	  	Delaware
	 T-Mobile Puerto Rico LLC
	  	Delaware
	 T-Mobile Resources Corporation
	  	Delaware
	 T-Mobile South LLC
	  	Delaware
	 T-Mobile Subsidiary IV Corporation
	  	Delaware
	 T-Mobile US, Inc.
	  	Delaware
	 T-Mobile West LLC
	  	Delaware
	 Triton PCS Finance Company, Inc.
	  	Delaware
	 Triton PCS Holdings Company L.L.C.
	  	Delaware
	 VoiceStream PCS I Iowa Corporation
	  	Delaware

  
 S1-1 

 Schedule 2 

SUBSIDIARIES 
  

			
	 Entity
	  	 Jurisdiction of Organization

	 IBSV LLC
	  	Delaware
	 Iowa Wireless Services LLC
	  	Delaware
	 Iowa Wireless Services Holding Corporation
	  	Delaware
	 MetroPCS California, LLC
	  	Delaware
	 MetroPCS Florida, LLC
	  	Delaware
	 MetroPCS Georgia, LLC
	  	Delaware
	 MetroPCS Massachusetts, LLC
	  	Delaware
	 MetroPCS Michigan, LLC
	  	Delaware
	 MetroPCS Networks California, LLC
	  	Delaware
	 MetroPCS Networks Florida, LLC
	  	Delaware
	 MetroPCS Nevada, LLC
	  	Delaware
	 MetroPCS New York, LLC
	  	Delaware
	 MetroPCS Pennsylvania, LLC
	  	Delaware
	 MetroPCS Texas, LLC
	  	Delaware
	 Powertel Memphis Licenses, Inc.
	  	Delaware
	 Powertel/Memphis, Inc.
	  	Delaware
	 SunCom Wireless Holdings, Inc.
	  	Delaware
	 SunCom Wireless Investment Company LLC
	  	Delaware
	 SunCom Wireless License Company, LLC
	  	Delaware
	 SunCom Wireless Management Company, Inc.
	  	Delaware
	 SunCom Wireless Operating Company, L.L.C.
	  	Delaware
	 SunCom Wireless Property Company, L.L.C.
	  	Delaware
	 SunCom Wireless, Inc.
	  	Delaware
	 T-Mobile Airtime Funding LLC
	  	Delaware
	 T-Mobile Central LLC
	  	Delaware
	 T-Mobile Financial LLC
	  	Delaware
	 T-Mobile Handset Funding LLC
	  	Delaware
	 T-Mobile Leasing LLC
	  	Delaware
	 T-Mobile License LLC
	  	Delaware
	 T-Mobile Northeast LLC
	  	Delaware
	 T-Mobile PCS Holdings LLC
	  	Delaware
	 T-Mobile Puerto Rico Holdings LLC
	  	Delaware
	 T-Mobile Puerto Rico LLC
	  	Delaware
	 T-Mobile Resources Corporation
	  	Delaware
	 T-Mobile South LLC
	  	Delaware
	 T-Mobile Subsidiary IV Corporation
	  	Delaware
	 T-Mobile USA Foundation
	  	Washington
	 T-Mobile USA, Inc.
	  	Delaware
	 T-Mobile USA Tower LLC
	  	Delaware
	 T-Mobile West LLC
	  	Delaware

  
 S2-1 

			
	 T-Mobile West Tower LLC
	  	Delaware
	 TMUS Assurance Corporation
	  	Hawaii
	 Triton PCS Finance Company, Inc.
	  	Delaware
	 Triton PCS Holdings Company L.L.C.
	  	Delaware
	 VoiceStream PCS I Iowa Corporation
	  	Delaware

  
 S2-2 

 EXHIBIT A 

DESCRIPTION OF NOTES 

Attached. 

 DESCRIPTION OF NOTES 

You can find the definitions of certain terms used in this description of notes under the caption “—Certain Definitions” below.
In this description of notes, “Issuer” refers only to T-Mobile USA, Inc., a Delaware corporation, and not to any of its Subsidiaries, and “Parent” refers only to T-Mobile US, Inc., a Delaware corporation and the
direct parent company of Issuer, and not to any of its Subsidiaries. 
 Issuer will issue $2,500,000,000 in aggregate principal amount of
notes in this offering as two separate series: $1,000,000,000 in aggregate principal amount of notes due 2026 (the “2026 notes”) and $1,500,000,000 in aggregate principal amount of notes due 2028 (the “2028
notes” and together with the 2026 notes, the “notes”). 
 Issuer will issue the notes under that certain base
indenture (the “base indenture”) among itself, Parent, the Subsidiary Guarantors and Deutsche Bank Trust Company Americas, as trustee (the “trustee”), dated April 28, 2013, as supplemented with respect to each
series of notes, by a supplemental indenture (for each such series, the “supplemental indenture”) among Issuer, Parent, the Subsidiary Guarantors and the trustee. In this description of notes, the term “indenture”
refers to the base indenture as supplemented separately by the supplemental indenture for each series of notes. The terms of the notes of each series include those stated in the indenture and those made part of the indenture by reference to the
Trust Indenture Act of 1939, as amended (the “Trust Indenture Act”). 
 The obligations and covenants of Issuer described
hereunder are only of Issuer and not of Parent. Although Parent is a guarantor of the notes, it and its Subsidiaries, except Issuer and its Restricted Subsidiaries, are generally not subject to any of the obligations and covenants described
hereunder. 
 The following description is a summary of the material provisions of the indenture. It does not restate the indenture in its
entirety. We urge you to read the indenture in its entirety because it, and not this description of notes, defines your rights as a holder of the notes. For more information on how you can obtain a copy of the base indenture and supplemental
indenture, see “Where You Can Find More Information.” Certain defined terms used in this description of notes but not defined below under “—Certain Definitions” have the meanings assigned to them in the indenture. 

The registered holder of a note will be treated as the owner of the note for all purposes. Only registered holders will have rights under the
indenture. 
 Brief Description of the Notes and the Note Guarantees 

The Notes 
 The notes of each series: 

 

	 	•	 	will be general unsecured, unsubordinated obligations of Issuer; 

  

	 	•	 	will be senior in right of payment to any future Indebtedness of Issuer to the extent that such future Indebtedness provides by its terms that it is subordinated to the notes; 

 

	 	•	 	will be equal in right of payment with any of Issuer’s existing and future Indebtedness and other liabilities that are not by their terms subordinated in right of payment to the notes, including, without
limitation, borrowings under the Revolving Credit Facilities and the Term Loan Credit Agreement (including the Incremental Term Loan Facility) and the Existing Senior Notes; 

 

	 	•	 	will be effectively subordinated to Issuer’s existing and future secured Indebtedness, including borrowings under the Secured Revolving Credit Facility and the Term Loan Credit Agreement (including the Incremental
Term Loan Facility) to the extent of the value of Issuer’s assets constituting collateral securing such Indebtedness; 

  
 A-1 

	 	•	 	will be structurally subordinated to all of the liabilities and any future preferred stock of Issuer’s non-guarantor subsidiaries; and 

 

	 	•	 	will be unconditionally guaranteed on a senior unsecured basis by the Guarantors. 

 See
“Risk Factors—Risks Related to the Notes—The notes and the guarantees will be unsecured and effectively subordinated to Issuer’s and the guarantors’ existing and future secured indebtedness, including borrowings under the
Term Loan Credit Agreement and the Secured Revolving Credit Facility, and structurally subordinated to the indebtedness and other liabilities of Issuer’s non-guarantor subsidiaries.” 

Assuming that on September 30, 2017, we had completed the January 2018 Notes Redemption, effected the Revolver Borrowing, completed the
offering of the notes and used the proceeds thereof as anticipated, we would have had approximately $31.0 billion of outstanding indebtedness, including $21.6 billion of outstanding indebtedness under the Issuer’s Existing Senior Notes and the
notes offered hereby, $4.0 billion of outstanding secured indebtedness under the Term Loan Credit Agreement, $1.0 billion of outstanding secured indebtedness under the Secured Revolving Credit Facility and approximately $2.6 billion in tower
obligations relating to the Tower Transactions. We also would have had $0.5 billion available for borrowing under the Secured Revolving Credit Facility and $1.0 billion available for borrowing under the Unsecured Revolving Credit Facility. 

As of September 30, 2017, Issuer’s Subsidiaries that will not guarantee the notes that were included in Parent’s consolidated
financial statements as of such date had approximately $1.5 billion of total assets (excluding receivables due from Issuer and its guarantor Subsidiaries) and $2.6 billion in Indebtedness, other liabilities and preferred stock (excluding payables
due to Issuer and its guarantor subsidiaries). 
 The Note Guarantees 

The notes will be guaranteed by Parent, all of Issuer’s Domestic Restricted Subsidiaries that are Wholly-Owned Subsidiaries (other than
Designated Tower Entities, Immaterial Subsidiaries and the Reinsurance Entity), Issuer’s Restricted Subsidiaries that guarantee any Specified Issuer Indebtedness, and any future Subsidiary of Parent that directly or indirectly owns equity
interests of Issuer. These Note Guarantees will be joint and several obligations of the Guarantors. The obligations of each Guarantor under its Note Guarantee will be limited as necessary to prevent that Note Guarantee from constituting a fraudulent
conveyance under applicable law. See “Risk Factors—Risks Related to the Notes—The guarantees may not be enforceable because of fraudulent conveyance laws.” 

Each guarantee of the notes by a Guarantor: 
  

	 	•	 	will be a general unsecured, unsubordinated obligation of that Guarantor; 

  

	 	•	 	will be senior in right of payment to any future Indebtedness of that Guarantor to the extent that such future Indebtedness provides by its terms that it is subordinated in right of payment to such Guarantor’s
guarantee of the notes; 

  

	 	•	 	will be equal in right of payment with all existing and future Indebtedness and other liabilities of that Guarantor that are not by their terms subordinated to its guarantee of the notes, including, without limitation,
any guarantees of the borrowings under the Revolving Credit Facilities and the Term Loan Credit Agreement (including the Incremental Term Loan Facility) and Issuer’s Existing Senior Notes; 

 

	 	•	 	will be effectively subordinated to that Guarantor’s existing and future secured Indebtedness, including its guarantee of the borrowings under the Secured Revolving Credit Facility and the Term Loan Credit
Agreement (including the Incremental Term Loan Facility) to the extent of the value of the assets of such Guarantor constituting collateral securing that Indebtedness; and 

 

	 	•	 	will be structurally subordinated to all of the Indebtedness and other liabilities and any future preferred stock of any subsidiaries of such Guarantor that do not guarantee the notes. 

  
 A-2 

 See “Risk Factors—Risks Related to the Notes—The notes and the guarantees will be
unsecured and effectively subordinated to Issuer’s and the guarantors’ existing and future secured indebtedness, including the Incremental Term Loan Facility and borrowings under the Secured Revolving Credit Facility and Term Loan Credit
Agreement, and structurally subordinated to the indebtedness and other liabilities of Issuer’s non-guarantor subsidiaries.” 

Under the circumstances described below under the subheading “—Certain Covenants—Additional Note Guarantees,” one or more
of Issuer’s Subsidiaries (including Issuer’s existing Domestic Restricted Subsidiaries) together with certain newly created or acquired Subsidiaries in the future may not guarantee the notes. In the event of a bankruptcy, liquidation or
reorganization of any of these non-guarantor Subsidiaries, the non-guarantor Subsidiaries will pay their trade creditors and holders of their debt and other obligations before they will be able to distribute any of their assets to Issuer. 

As of the Series Issue Date, all of Issuer’s Subsidiaries other than the Layer3 Entities (if applicable) will be “Restricted
Subsidiaries.” However, under the circumstances described below under the caption “—Certain Covenants—Designation of Restricted and Unrestricted Subsidiaries,” Issuer will be permitted to designate certain of its
Subsidiaries as “Unrestricted Subsidiaries.” Issuer’s Unrestricted Subsidiaries will not be subject to many of the restrictive covenants in the indenture. Issuer’s Unrestricted Subsidiaries will not guarantee the notes. 

Except as otherwise provided in the following paragraph, a Guarantor of the notes of any series (other than Parent) may not sell or otherwise
dispose of all or substantially all of its assets to, or consolidate with or merge with or into (whether or not such Guarantor is the surviving Person) another Person, other than Issuer or another Guarantor, unless: 

 

	(1)	immediately after giving effect to that transaction, no Default or Event of Default exists in respect of the notes of such series; and 

 

	(2)	either: 

  

	 	(a)	subject to the following paragraph and if it is not already a Guarantor of the notes of such series, the Person acquiring the property in any such sale or disposition or the Person formed by or surviving any such
consolidation or merger assumes all the obligations of that Guarantor under the indenture and its Note Guarantee of the notes of such series pursuant to a supplemental indenture; or 

 

	 	(b)	such sale or other disposition complies with the “Asset Sale” provisions of the indenture (it being understood that only such portion of the Net Proceeds as is or is required to be applied on or before the
date of such release in accordance with the terms of the indenture needs to be so applied). 

 The Note Guarantee of a
Guarantor will be released in respect of the notes of any series: 
  

	(1)	only in the case of a Subsidiary Guarantor, in connection with any sale or other disposition of all or substantially all of the assets of that Subsidiary Guarantor (including by way of merger or consolidation) to a
Person that is not (either before or after giving effect to such transaction) Issuer or a Restricted Subsidiary of Issuer, if the sale or other disposition is not prohibited by the “Asset Sale” provisions of the indenture;

  

	(2)	only in the case of a Subsidiary Guarantor, in connection with any issuance, sale or other disposition of Capital Stock of that Subsidiary Guarantor to a Person that is not (either before or after giving effect to such
transaction) Issuer or a Restricted Subsidiary of Issuer, if the issuance, sale or other disposition does not violate the “Asset Sale” or “Restricted Investment” provisions of the indenture, and the Subsidiary Guarantor ceases to
be a Wholly-Owned Subsidiary of Issuer as a result of such sale or other disposition and does not guarantee any Specified Issuer Indebtedness; 

  

	(3)	if such Guarantor (other than Parent) ceases to guarantee any Specified Issuer Indebtedness and such Guarantor would not otherwise be required to guarantee the series of notes pursuant to the covenant described below
under the caption “—Certain Covenants—Additional Note Guarantees”; 

  
 A-3 

	(4)	if Issuer designates any Restricted Subsidiary that is a Guarantor to be an Unrestricted Subsidiary in accordance with the applicable provisions of the indenture; 

 

	(5)	upon the legal defeasance, covenant defeasance, or satisfaction and discharge of the indenture as provided below under the captions “—Legal Defeasance and Covenant Defeasance” and “—Satisfaction
and Discharge”; 

  

	(6)	upon the liquidation or dissolution of such Guarantor (other than Parent) provided no Default or Event of Default has occurred that is continuing; or 

 

	(7)	if such Guarantor becomes an Immaterial Subsidiary and such Guarantor would not otherwise be required to guarantee the series of notes pursuant to the covenant described below under the caption “—Certain
Covenants—Additional Note Guarantees.” 

 See “—Repurchase at the Option of Holders—Asset Sales”
below. 
 Principal, Maturity and Interest 

After the completion of the January 2018 Notes Redemption and this offering, and reflecting the anticipated use of proceeds thereof, Issuer
would have outstanding $21.6 billion in aggregate principal amount of senior notes. 
 Issuer will issue $2,500,000,000 in aggregate
principal amount of notes in this offering, of which $1,000,000,000 in aggregate principal amount will be 2026 notes and $1,500,000,000 in aggregate principal amount will be 2028 notes. 

Issuer may issue further additional notes of any series from time to time, and such additional notes of such series may be issued under the
base indenture as supplemented either by the supplemental indenture for such series of notes or one or more other supplemental indentures. Any issuance of additional notes is subject to all of the covenants in the indenture, including the covenant
described below under the caption “—Certain Covenants—Incurrence of Indebtedness and Issuance of Disqualified Stock and Preferred Stock.” The notes of any series and any additional notes of such series subsequently issued will be
treated as a single series for all purposes under the indenture, including, without limitation, waivers, amendments, redemptions and offers to purchase. 

Issuer will issue notes in minimum denominations of $2,000 and integral multiples of $1,000. The 2026 notes will mature on February 1,
2026 and the 2028 notes will mature on February 1, 2028. 
 Interest on the 2026 notes will accrue at the rate of 4.500% per annum and
interest on the 2028 notes will accrue at the rate of 4.750% per annum, and interest on each series of notes will be payable semiannually in arrears on February 1 and August 1, commencing on August 1, 2018. Issuer will make each
interest payment to the holders of record on the immediately preceding January 15 and July 15. 
 Interest on the notes will
accrue from the date of original issuance or, if interest has already been paid, from the date it was most recently paid. Interest will be computed on the basis of a 360-day year comprised of twelve 30-day months. If an interest payment date or the
maturity date falls on a day that is not a Business Day, the related payment of principal or interest will be made on the next succeeding Business Day as if made on the date the payment was due, and no interest shall accrue for the intervening
period. 
 Payments of principal of and interest on the notes issued in book-entry form or definitive form, if any, will be made as
described below under the caption “—Methods of Receiving Payments on the Notes.” 
 Each series of notes initially will be
evidenced by one or more global notes deposited with a custodian for, and registered in the name of, Cede & Co., as nominee of The Depository Trust Company (“DTC”). Except as 

  
 A-4 

 
described below, beneficial interests in the global notes will be shown on, and transfers thereof will be effected only through, records maintained by DTC and its direct and indirect
participants. We do not intend to apply for the notes to be listed on any securities exchange or to arrange for the notes to be quoted on any quotation system. 

Methods of Receiving Payments on the Notes 

If a holder of a definitive note has given wire transfer instructions to Issuer and Issuer is the paying agent, Issuer will pay all principal,
interest and premium, if any, on that holder’s notes in accordance with those instructions until given written notice to the contrary. All other payments on the notes will be made at the Corporate Trust Office of the Trustee, unless Issuer
elects to make interest payments by check mailed to the noteholders at their address set forth in the books and records of the registrar. 
 Paying Agent
and Registrar for the Notes 
 The trustee will initially act as paying agent and registrar. Issuer may change the paying agent or
registrar without prior notice to the holders of the notes, and Issuer or any of its Subsidiaries may act as paying agent or registrar. 
 Transfer and
Exchange 
 Except as set forth below, the global notes may be transferred, in whole and not in part, only to another nominee of DTC or
to a successor of DTC or its nominee. 
 A holder of a definitive note may transfer or exchange notes in accordance with the provisions of
the indenture. The registrar and the trustee may require a holder, among other things, to furnish appropriate endorsements and transfer documents in connection with a transfer of notes. Holders will be required to pay all taxes relating to, arising
out of, or in connection with such transfer. Issuer will not be required to transfer or exchange any note selected for redemption. Also, Issuer will not be required to transfer or exchange any note for a period of 15 days before a selection of notes
to be redeemed. 
 Optional Redemption 
 2026 Notes

 At any time prior to February 1, 2021, Issuer may on any one or more occasions redeem up to 40% of the aggregate principal amount
of the 2026 notes issued under the applicable indenture, upon not less than 10 nor more than 60 days’ notice, at a redemption price equal to 104.500% of the principal amount of 2026 notes redeemed plus accrued and unpaid interest, if any,
thereon to, but not including, the applicable redemption date, subject to the rights of holders of 2026 notes on the relevant record date to receive interest due on the relevant interest payment date for periods prior to such redemption date, with
an amount equal to the net cash proceeds of one or more sales of Equity Interests (other than Disqualified Stock) of Issuer or contributions to Issuer’s common equity capital made with an amount equal to the net cash proceeds of one or more
sales of Equity Interests (other than Disqualified Stock) of Parent; provided that: 
  

	 	•	 	at least 50% of the aggregate principal amount of the 2026 notes issued under the applicable indenture (excluding 2026 notes held by Issuer and its Subsidiaries) remains outstanding immediately after the occurrence of
such redemption; and 

  

	 	•	 	the redemption occurs within 180 days of the date of the closing of such sale of Equity Interests by Issuer or the date of contribution to Issuer’s common equity capital made with an amount equal to the net cash
proceeds of one or more sales of Equity Interests of Parent. 

 On or after February 1, 2021, Issuer may redeem all or a
part of the 2026 notes, upon not less than 10 nor more than 60 days’ notice, at the redemption prices (expressed as percentages of the principal amount of 2026 

  
 A-5 

 
notes redeemed) set forth below plus accrued and unpaid interest, if any, on the 2026 notes redeemed to, but not including, the applicable redemption date, if redeemed during the twelve month
period beginning on February 1 of the years indicated below, subject to the rights of holders of 2026 notes on the relevant record date to receive interest due on the relevant interest payment date for periods prior to such redemption date:

  

					
	 Year
	  	Percentage	 
	 2021
	  	 	102.250	% 
	 2022
	  	 	101.125	% 
	 2023 and thereafter
	  	 	100.000	% 

 At any time prior to February 1, 2021, Issuer may also redeem all or a part of the 2026 notes, upon not
less than 10 nor more than 60 days’ notice, at a redemption price equal to 100% of the principal amount of 2026 notes redeemed plus the Applicable Premium for the 2026 notes as of, and accrued and unpaid interest, if any, to, but not including,
the redemption date, subject to the rights of holders of 2026 notes on the relevant record date to receive interest due on the relevant interest payment date for periods prior to such redemption date. 

Unless Issuer defaults in the payment of the redemption price, interest will cease to accrue on the 2026 notes or portions thereof called for
redemption on the redemption date. 
 2028 Notes 

At any time prior to February 1, 2021, Issuer may on any one or more occasions redeem up to 40% of the aggregate principal amount of the
2028 notes issued under the applicable indenture, upon not less than 10 nor more than 60 days’ notice, at a redemption price equal to 104.750% of the principal amount of 2028 notes redeemed plus accrued and unpaid interest, if any, thereon to,
but not including, the applicable redemption date, subject to the rights of holders of 2028 notes on the relevant record date to receive interest due on the relevant interest payment date for periods prior to such redemption date, with an amount
equal to the net cash proceeds of one or more sales of Equity Interests (other than Disqualified Stock) of Issuer or contributions to Issuer’s common equity capital made with an amount equal to the net cash proceeds of one or more sales of
Equity Interests (other than Disqualified Stock) of Parent; provided that: 
  

	 	•	 	at least 50% of the aggregate principal amount of the 2028 notes issued under the applicable indenture (excluding 2028 notes held by Issuer and its Subsidiaries) remains outstanding immediately after the occurrence of
such redemption; and 

  

	 	•	 	the redemption occurs within 180 days of the date of the closing of such sale of Equity Interests by Issuer or the date of contribution to Issuer’s common equity capital made with an amount equal to the net cash
proceeds of one or more sales of Equity Interests of Parent. 

 On or after February 1, 2023, Issuer may redeem all or a
part of the 2028 notes, upon not less than 10 nor more than 60 days’ notice, at the redemption prices (expressed as percentages of the principal amount of 2028 notes redeemed) set forth below plus accrued and unpaid interest, if any, on the
2028 notes redeemed to, but, not including, the applicable redemption date, if redeemed during the twelve month period beginning on February 1 of the years indicated below, subject to the rights of holders of 2028 notes on the relevant record
date to receive interest on the relevant interest payment date for periods prior to such redemption date: 
  

					
	 Year
	  	Percentage	 
	 2023
	  	 	102.375	% 
	 2024
	  	 	101.583	% 
	 2025
	  	 	100.792	% 
	 2026 and thereafter
	  	 	100.000	% 

  
 A-6 

 At any time prior to February 1, 2023, Issuer may also redeem all or a part of the 2028
notes, upon not less than 10 nor more than 60 days’ notice, at a redemption price equal to 100% of the principal amount of 2028 notes redeemed plus the Applicable Premium for the 2028 notes as of, and accrued and unpaid interest, if any, to,
but not including, the redemption date, subject to the rights of holders of 2028 notes on the relevant record date to receive interest due on the relevant interest payment date for periods prior to such redemption date. 

Unless Issuer defaults in the payment of the redemption price, interest will cease to accrue on the 2028 notes or portions thereof called for
redemption on the redemption date. 
 Mandatory Redemption 

Issuer is not required to make mandatory redemption or sinking fund payments with respect to the notes. 

Repurchase at the Option of Holders 

Change of Control Triggering Event 

If a Change of Control Triggering Event occurs with respect to any series of notes, each holder of notes of such series will have the right to
require Issuer to repurchase all or any part (equal to $2,000 or an integral multiple of $1,000) of that holder’s notes of such series pursuant to a Change of Control Offer on the terms set forth in the indenture. In the Change of Control
Offer, Issuer will offer a Change of Control Payment in cash equal to 101% of the aggregate principal amount of notes repurchased plus accrued and unpaid interest, if any, on the notes repurchased to, but not including, the date of purchase, subject
to the rights of holders of notes on the relevant record date to receive interest due on the relevant interest payment date for periods prior to such repurchase date (the “Change of Control Payment”). Within 30 days following any
Change of Control Triggering Event, Issuer will send a notice (the “Change of Control Offer”) to each holder of notes to which such Change of Control Triggering Event applies and the trustee describing the transaction or
transactions and identify the ratings decline that together constitute the Change of Control Triggering Event and offering to repurchase the notes of such series on the Change of Control Payment Date specified in the notice, which date will be no
earlier than 10 days and no later than 60 days from the date such notice is sent (the “Change of Control Payment Date”), pursuant to the procedures required by the indenture and described in such notice. Issuer will comply with the
requirements of Rule 14e-1 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”) and any other securities laws and regulations thereunder to the extent those laws and regulations are applicable in connection with the
repurchase of the notes as a result of a Change of Control Triggering Event. To the extent that the provisions of any securities laws or regulations conflict with the Change of Control Triggering Event provisions of the indenture, or compliance with
the Change of Control Triggering Event provisions of the indenture would constitute a violation of any such laws or regulations, Issuer will comply with the applicable securities laws and regulations and will not be deemed to have breached its
obligations under the Change of Control Triggering Event provisions of the indenture by virtue of such compliance. In connection with the tender of any notes with respect to a Change of Control Triggering Event, the tendering holder shall provide
good title to the notes, free and clear of all liens and encumbrances, and shall represent and warrant that such holder is presenting good title, free and clear of all liens and encumbrances, and such other representations and warranties as are
customary. 
 On the Change of Control Payment Date, Issuer will, to the extent lawful: 

 

	(1)	accept for payment all notes or portions of notes properly tendered pursuant to the Change of Control Offer; 

  

	(2)	deposit with the paying agent an amount equal to the Change of Control Payment in respect of all notes or portions of notes properly tendered; and 

 

	(3)	deliver or cause to be delivered to the paying agent the notes properly accepted together with an officers’ certificate stating the aggregate principal amount of notes or portions of notes being purchased by
Issuer. 

  
 A-7 

 The paying agent will promptly make payment, to each holder of notes properly tendered, of the
Change of Control Payment for such notes, and the trustee will promptly authenticate and mail (or cause to be transferred by book entry) to each holder, a new note equal in principal amount to any unpurchased portion of the notes surrendered, if
any; provided that each new note will be in a principal amount of $2,000 or an integral multiple of $1,000 in excess thereof. Issuer will publicly announce the results of the Change of Control Offer on or as soon as practicable after the
Change of Control Payment Date. 
 The provisions described above that require Issuer to make a Change of Control Offer following a Change
of Control Triggering Event will be applicable whether or not any other provisions of the indenture are applicable. Except as described above with respect to a Change of Control Triggering Event, the indenture does not contain provisions that permit
the holders of the notes to require, or otherwise provide, that Issuer repurchase or redeem the notes in the event of a takeover, recapitalization or similar transaction. 

Notwithstanding the foregoing, Issuer will not be required to make a Change of Control Offer with respect to any series of the notes upon a
Change of Control Triggering Event if (1) a third party makes the Change of Control Offer for such series of notes in the manner, at the times and otherwise in compliance with the requirements set forth in the indenture applicable to a Change
of Control Offer made by Issuer and purchases all notes of such series properly tendered and not withdrawn under the Change of Control Offer, or (2) notice of redemption with respect to such series has been given pursuant to the indenture as
described above under the caption “—Optional Redemption,” unless and until there is a default in payment of the applicable redemption price. 

A Change of Control Offer may be made in advance of a Change of Control Triggering Event, and conditioned upon such Change of Control
Triggering Event, if a definitive agreement has been executed for a transaction that would constitute a Change of Control at the time of making of the Change of Control Offer. 

In the event that holders of not less than 90% of the aggregate principal amount of the outstanding notes of a series accept a Change of
Control Offer and Issuer purchases all of the notes of such series held by such holders, Issuer will have the right, upon not less than 10 nor more than 60 days’ notice, given not more than 30 days following the purchase pursuant to the Change
of Control Offer described above, to redeem all of the notes of such series that remain outstanding following such purchase at a redemption price equal to the Change of Control Payment plus, to the extent not included in the Change of Control
Payment, accrued and unpaid interest, if any, on the notes of such series that remain outstanding, to, but not including, the date of redemption (subject to the right of holders of record on the relevant record date to receive interest due on an
interest payment date that is on or prior to the redemption date). 
 The definition of Change of Control includes a phrase relating to the
direct or indirect sale, lease, transfer, conveyance or other disposition of “all or substantially all” of the properties or assets of Issuer and its Restricted Subsidiaries taken as a whole. Although there is a limited body of case law
interpreting the phrase “substantially all,” there is no precise established definition of the phrase under applicable law. Accordingly, the ability of a holder of notes to require Issuer to repurchase its notes as a result of a sale,
lease, transfer, conveyance or other disposition of less than all of the assets of Issuer and its Restricted Subsidiaries taken as a whole to another Person or group may be uncertain. 

Asset Sales 

Issuer will not, and will not permit any of its Restricted Subsidiaries to, consummate an Asset Sale unless: 

 

	(1)	Issuer (or the Restricted Subsidiary, as the case may be) receives consideration at the time of the Asset Sale at least equal to the Fair Market Value of the assets or Equity Interests issued or sold or otherwise
disposed of; and 

  
 A-8 

	(2)	at least 75% of the consideration received by Issuer or such Restricted Subsidiary in the Asset Sale and all other Asset Sales since the Closing Date is in the form of cash, Cash Equivalents or Replacement Assets or a
combination thereof. For purposes of this provision, each of the following will be deemed to be cash: 

  

	 	(a)	any liabilities, as shown on Issuer’s most recent consolidated balance sheet (or as would be shown on Issuer’s consolidated balance sheet as of the date of such Asset Sale), of Issuer or any Restricted
Subsidiary (other than contingent liabilities and liabilities that are by their terms subordinated to the notes or any Note Guarantees) that are assumed by the transferee of any such assets pursuant to a novation agreement that releases Issuer or
such Restricted Subsidiary from further liability; 

  

	 	(b)	any securities, notes or other obligations received by Issuer, or any such Restricted Subsidiary, from such transferee that are converted by Issuer or such Restricted Subsidiary into cash, Cash Equivalents or
Replacement Assets within 90 days after such Asset Sale, to the extent of the cash, Cash Equivalents or Replacement Assets received in that conversion; 

  

	 	(c)	consideration consisting of Indebtedness of Issuer or a Restricted Subsidiary (other than Subordinated Indebtedness) received after the Series Issue Date from Persons who are not Issuer or any Restricted Subsidiary; and

  

	 	(d)	any Designated Non-cash Consideration received by Issuer or any Restricted Subsidiary in such Asset Sale having an aggregate Fair Market Value (as determined in good faith by Issuer), taken together with all other
Designated Non-cash Consideration received pursuant to this clause (d) that is at any time outstanding, not to exceed 5% of Issuer’s Total Assets (with the Fair Market Value of each item of Designated Non-cash Consideration being measured
at the time received and without giving effect to subsequent changes in value). 

 Notwithstanding the foregoing, the 75%
limitation referred to above shall be deemed satisfied with respect to any Asset Sale in which the cash, Cash Equivalents or Replacement Assets portion of the consideration received therefrom, determined in accordance with the foregoing provision on
an after-tax basis, is equal to or greater than what the after-tax proceeds would have been had such Asset Sale complied with the aforementioned 75% limitation. 

Within 365 days after the receipt of any Net Proceeds from an Asset Sale, Issuer or a Restricted Subsidiary may apply an amount equal to such
Net Proceeds: 
  

	(1)	to purchase Replacement Assets; 

  

	(2)	to prepay, repay, defease, redeem, purchase or otherwise retire Indebtedness and other Obligations under a Credit Facility or Indebtedness secured by property that is subject to such Asset Sale and, if the Indebtedness
repaid is revolving credit Indebtedness, to correspondingly reduce commitments with respect thereto; 

  

	(3)	to prepay, repay, defease, redeem, purchase or otherwise retire Obligations under Indebtedness that is not Subordinated Indebtedness other than the Indebtedness described in clause (2) above (and, if the
Indebtedness repaid is revolving credit Indebtedness, to correspondingly reduce commitments with respect thereto); provided that Issuer shall equally and ratably prepay, repay, defease, redeem, purchase or otherwise retire (or offer to
prepay, repay, defease, redeem, purchase or otherwise retire, as applicable) Obligations under the notes on a pro rata basis for no less than 100% of the principal amount thereof plus accrued and unpaid interest, if any, thereon to, but not
including, the applicable redemption date; or 

  

	(4)	if the assets subject to such Asset Sale are the property or assets of a Restricted Subsidiary that is not a Guarantor, to prepay, repay, defease, redeem, purchase or otherwise retire Indebtedness of such Restricted
Subsidiary or Indebtedness of any other Restricted Subsidiary that is not a Guarantor, other than Indebtedness owed to Issuer or any Restricted Subsidiary. 

Notwithstanding the foregoing, if within 365 days after the receipt of any Net Proceeds from an Asset Sale, Issuer or a Restricted Subsidiary
enters into a binding written agreement committing Issuer or such Restricted 

  
 A-9 

 
Subsidiary, subject to customary conditions, to an application of funds of the kind described in clause (1) above, Issuer or such Restricted Subsidiary shall be deemed not to be in violation
of the preceding paragraph so long as such application of funds is consummated within 545 days of the receipt of such Net Proceeds. 

Pending the final application of any Net Proceeds of an Asset Sale, Issuer may temporarily reduce revolving credit borrowings or otherwise use
the Net Proceeds in any manner that is not prohibited by the indenture. 
 An amount equal to any Net Proceeds from Asset Sales that are not
applied or invested as provided in the third paragraph of this covenant will constitute “Excess Proceeds.” When the aggregate amount of Excess Proceeds exceeds $100.0 million, within 20 days thereof, Issuer shall apply the entire
aggregate amount of unutilized Excess Proceeds (not only the amount in excess of $100.0 million) to make an offer (an “Asset Sale Offer”) to all holders of notes and all holders of other Indebtedness that is pari passu with
the notes containing provisions requiring Issuer to make an offer to purchase or redeem with the proceeds of sales of assets to purchase the maximum principal amount of notes and purchase or redeem such other pari passu Indebtedness that may
be purchased or redeemed out of the Excess Proceeds. The offer price in any Asset Sale Offer will be equal to 100% of the principal amount of the notes and such other pari passu Indebtedness that may be purchased or redeemed with Excess
Proceeds, plus accrued and unpaid interest, if any, to, but not including, the date of consummation of the purchase, and will be payable in cash. If any Excess Proceeds remain after consummation of an Asset Sale Offer, Issuer and its Restricted
Subsidiaries may use those Excess Proceeds for any purpose not otherwise prohibited by the indenture. If the aggregate principal amount of notes and other pari passu Indebtedness tendered in response to such Asset Sale Offer exceeds the
amount of Excess Proceeds, the trustee shall select the notes and Issuer will select such other pari passu Indebtedness to be purchased or redeemed on a pro rata basis unless otherwise required by law or applicable stock exchange or
depositary requirements. Upon completion of each Asset Sale Offer, the amount of Excess Proceeds will be reset at zero. 
 Issuer will
comply with the requirements of Rule 14e-1 under the Exchange Act and any other securities laws and regulations thereunder to the extent those laws and regulations are applicable in connection with each repurchase of notes pursuant to an Asset Sale
Offer. To the extent that the provisions of any securities laws or regulations conflict with the Asset Sale provisions of the indenture, or compliance with the Asset Sale provisions of the indenture would constitute a violation of any such laws or
regulations, Issuer will comply with the applicable securities laws and regulations and will not be deemed to have breached its obligations under the Asset Sale provisions of the indenture by virtue of such compliance. 

The agreements governing Issuer’s other Indebtedness contain, and future agreements may contain, prohibitions of certain events,
including events that would constitute a Change of Control or an Asset Sale and may prohibit repurchases of or other prepayments in respect of the notes. The exercise by the holders of the notes of their right to require Issuer to repurchase the
notes upon a Change of Control Triggering Event or an Asset Sale could cause a default under these other agreements, even if the Change of Control Triggering Event or Asset Sale itself does not, due to the financial effect of such repurchases or
other prepayments on Issuer. In the event a Change of Control Triggering Event or Asset Sale occurs at a time when Issuer is prohibited from purchasing notes, Issuer could seek the consent of the holders of such Indebtedness to the purchase of notes
or could attempt to refinance the borrowings that contain such prohibition. If Issuer does not obtain a consent or repay those borrowings, Issuer will remain prohibited from purchasing notes. In that case, Issuer’s failure to purchase tendered
notes would constitute an Event of Default under the applicable indenture that could, in turn, constitute a default under the other Indebtedness. Finally, Issuer’s ability to pay cash to the holders of notes upon a repurchase may be limited by
Issuer’s then existing financial resources. See “Risk Factors—Risks Related to the Notes—The indenture governing the Existing Senior Notes and the notes offered hereby, our Revolving Credit Facilities and the Term Loan Credit
Agreement include or will include restrictive covenants that limit our operating flexibility.” 

  
 A-10 

 Selection and Notice 

If less than all of the notes of a series are to be redeemed, the trustee will select notes of such series for redemption on a pro rata
basis unless otherwise required by law or applicable stock exchange or depositary requirements. 
 No notes of $2,000 or less can be
redeemed in part. Notices of redemption will be sent electronically or mailed by first class mail at least 10 but not more than 60 days before the redemption date to each holder of notes to be redeemed at its registered address, except that
redemption notices may be sent more than 60 days prior to a redemption date if the notice is issued in connection with a defeasance of the notes of a series or a satisfaction and discharge of the indenture with respect to such series. Except as
otherwise set forth in the provisions described under the caption “—Repurchase at the Option of Holders—Change of Control Triggering Event,” any such notice of redemption may, at Issuer’s discretion, state that such
redemption is subject to one or more conditions precedent. In addition, if such redemption or notice is subject to satisfaction of one or more conditions precedent, such notice shall state that, in Issuer’s discretion, the redemption date may
be delayed until such time as any or all such conditions shall be satisfied (or waived by Issuer in its sole discretion), or such redemption may not occur and such notice may be rescinded in the event that any or all such conditions shall not have
been satisfied (or waived by Issuer in its sole discretion) by the redemption date (whether the original redemption date or the redemption date so delayed). 

If any note is to be redeemed in part only, the notice of redemption that relates to that note will state the portion of the principal amount
of that note that is to be redeemed. If in definitive form a new note in principal amount equal to the unredeemed portion of the original note will be issued in the name of the holder of notes upon cancellation of the original note. Except to the
extent that a notice of redemption is conditional as permitted in the provisions described under the caption “—Repurchase at the Option of Holders—Change of Control Triggering Event,” notes called for redemption become due on the
date fixed for redemption. On and after the redemption date, interest ceases to accrue on notes or portions of notes called for redemption. 
 Certain
Covenants 
 Changes in Covenants When Notes Rated Investment Grade 

If on any date following the Series Issue Date with respect to a series of notes: 

 

	(1)	the notes of such series are rated Investment Grade by two out of the three Rating Agencies; and 

  

	(2)	no Default or Event of Default shall have occurred and be continuing with respect to the notes of such series (other than with respect to the covenants specifically listed under the following captions),

 then, beginning on that day, the covenants specifically listed under the following captions in this prospectus supplement will cease to
apply to such series of notes and will not be later reinstated even if the ratings of the notes of such series should subsequently decline: 
  

	(1)	“—Repurchase at the Option of Holders—Asset Sales”; 

  

	(2)	“—Restricted Payments”; 

  

	(3)	“—Incurrence of Indebtedness and Issuance of Disqualified Stock and Preferred Stock”; 

  

	(4)	“—Dividend and Other Payment Restrictions Affecting Subsidiaries”; 

  

	(5)	“—Transactions with Affiliates”; 

  

	(6)	“—Designation of Restricted and Unrestricted Subsidiaries”; and 

  

	(7)	clauses (3) (to the extent that a Default or Event of Default exists by reason of one or more of the covenants specifically listed in this paragraph) and (4) of the covenant described below under the caption
“—Merger, Consolidation or Sale of Assets.” 

 There can be no assurance that the notes of any series will ever
achieve an Investment Grade rating. 

  
 A-11 

 Restricted Payments 

Issuer will not, and will not permit any of its Restricted Subsidiaries to, directly or indirectly: 

 

	(1)	declare or pay (without duplication) any dividend, or make any other payment or distribution, on account of Issuer’s or any of its Restricted Subsidiaries’ Equity Interests (including any payment in connection
with any merger or consolidation involving Issuer or any of its Restricted Subsidiaries) or to the direct or indirect holders of Issuer’s or any of its Restricted Subsidiaries’ Equity Interests in their capacity as such (other than
dividends or distributions payable in Equity Interests (other than Disqualified Stock) of Issuer and other than dividends or distributions payable to Issuer or a Restricted Subsidiary of Issuer); 

 

	(2)	purchase, redeem or otherwise acquire or retire for value (including in connection with any merger or consolidation involving Issuer) any Equity Interests of Issuer or any direct or indirect parent of Issuer;

  

	(3)	make any payment on or with respect to, or purchase, redeem, defease or otherwise acquire or retire for value any Subordinated Indebtedness (excluding any intercompany Indebtedness between or among Issuer and any of its
Restricted Subsidiaries), except a payment of interest or principal at the Stated Maturity thereof; or 

  

	(4)	make any Restricted Investment (all such payments and other actions set forth in clauses (1) through (4) above being collectively referred as “Restricted Payments”), 

unless, at the time of and after giving effect to such Restricted Payment: 
  

	(a)	no Default or Event of Default has occurred and is continuing or would occur as a consequence of such Restricted Payment; 

  

	(b)	Issuer would, at the time of such Restricted Payment and after giving pro forma effect thereto as if such Restricted Payment had been made at the beginning of the applicable four-quarter period, have been permitted to
incur at least $1.00 of additional Indebtedness pursuant to the Debt to Cash Flow Ratio test set forth in the first paragraph of the covenant described below under the caption “—Incurrence of Indebtedness and Issuance of Disqualified Stock
and Preferred Stock”; and 

  

	(c)	such Restricted Payment, together with the aggregate amount of all other Restricted Payments made by Issuer and its Restricted Subsidiaries since the Closing Date (excluding Restricted Payments permitted by clauses (2),
(3), (4), (5), (6), (7), (8), (9), (11), (12), (13), (14), (15), (16) and (17) of the next succeeding paragraph), is less than the sum, without duplication, of: 

 

	 	(i)	100% of Issuer’s Consolidated Cash Flow for the period (taken as one accounting period) from and after the Closing Date to the end of Issuer’s most recently ended fiscal quarter for which internal financial
statements are available at the time of such Restricted Payment, less the product of 1.4 times Issuer’s Consolidated Interest Expense for the same period; plus 

 

	 	(ii)	100% of the aggregate net cash proceeds, and the Fair Market Value of any property other than cash, in each case received by Issuer after the Closing Date as a contribution to its common equity capital (other than any
such contribution resulting, or deemed to result, from the Merger) or from the issue or sale of Equity Interests of Issuer (other than Disqualified Stock) or from the issue or sale of convertible or exchangeable Disqualified Stock or convertible or
exchangeable debt securities of Issuer that have been converted into or exchanged for such Equity Interests (other than Equity Interests (or Disqualified Stock or debt securities) sold to a Subsidiary of Issuer); plus 

 

	 	(iii)	to the extent that any Restricted Investment that was made after the Closing Date, or, that any Restricted Investment that was made by MetroPCS Wireless, Inc. or any of its Restricted Subsidiaries after November 3,
2006 and prior to the Closing Date (provided that, and solely to the extent that, such Restricted Investment, at the time made, reduced the amount that would be calculated pursuant to clause (g) below), in each case, is sold for cash or
Cash Equivalents, or otherwise is liquidated or repaid for cash or Cash Equivalents, an amount equal to such cash and Cash Equivalents; plus 

  
 A-12 

	 	(iv)	to the extent that any Unrestricted Subsidiary of Issuer designated as such after the Closing Date is redesignated as a Restricted Subsidiary after the Closing Date, the Fair Market Value of Issuer’s Investment in
such Subsidiary as of the date of such redesignation; other than to the extent such Investment constituted a Permitted Investment; plus 

  

	 	(v)	100% of any cash dividends or cash distributions, and the Fair Market Value of any property other than cash, in each case actually received directly or indirectly by Issuer or a Restricted Subsidiary of Issuer that is a
Guarantor after the Closing Date from an Unrestricted Subsidiary of Issuer, in each case, to the extent that such dividends, cash distributions or other property were not otherwise included in the Consolidated Net Income of Issuer for such period
and other than to the extent such Investment constituted a Permitted Investment; minus 

  

	 	(vi)	the aggregate amount of any Net Equity Proceeds taken into account for purposes of incurring Indebtedness pursuant to clause (14) the definition of “Permitted Debt” set forth below under the caption
“—Incurrence of Indebtedness and Issuance of Disqualified Stock and Preferred Stock,” after the Closing Date; plus 

  

	 	(vii)	the amount that would be calculated immediately prior to the consummation of the Merger on the Closing Date pursuant to clause (3) of the second paragraph of Section 4.07(a) of the September 2010 Senior Notes
Indenture, as in effect immediately prior to the effectiveness of the December 2012 Sixth Supplemental Indenture (provided that any calculation of cumulative Consolidated Cash Flow and Consolidated Interest Expense in subclause (A) of
such clause (3) shall include (x) Issuer’s last fiscal quarter ending prior to the Closing Date, and (y) the period from the beginning of Issuer’s fiscal quarter during which the Closing Date occurs to the Closing Date, in
each case, if internal financial statements are available for such period at the time of calculation, even if they are not available immediately prior to the consummation of the Merger on the Closing Date). 

As of September 30, 2017, the amount calculated pursuant to clause (c)(i)-(vii) above (the “RP Basket”), was
approximately $33 billion. 
 The preceding provisions will not prohibit: 

 

	(1)	the payment of any dividend or the consummation of any irrevocable redemption within 60 days after the date of declaration of the dividend or giving of the redemption notice, as the case may be, if at the date of
declaration or notice, the dividend or redemption payment would have complied with the provisions of the indenture; 

  

	(2)	the making of any Restricted Payment in exchange for, or out of the net cash proceeds of the substantially concurrent sale (other than to a Subsidiary of Issuer) of, Equity Interests of Issuer (other than Disqualified
Stock) or from the substantially concurrent contribution of common equity capital to Issuer; provided that the amount of any such net cash proceeds that are utilized for any such Restricted Payment will be excluded from clause (3)(b) of
the preceding paragraph; provided, further, that any Net Equity Proceeds (x) used for making a Restricted Investment pursuant to clause (10) of this paragraph or (y) taken into account for purposes of incurring
Indebtedness pursuant to clause (14) of the definition of “Permitted Debt” set forth below under the caption “—Incurrence of Indebtedness and Issuance of Disqualified Stock and Preferred Stock,” may not also be used to
make a Restricted Payment pursuant to this clause (2); 

  

	(3)	the repurchase, redemption, defeasance or other acquisition or retirement for value of Subordinated Indebtedness of Issuer or any Subsidiary Guarantor with the net cash proceeds from a substantially concurrent
incurrence of Permitted Refinancing Indebtedness; 

  

	(4)	the payment of any dividend (or, in the case of any partnership or limited liability company, any similar distribution) by a Restricted Subsidiary of Issuer to the holders of its Equity Interests on a pro rata basis;

  

	(5)	 the repurchase, redemption or other acquisition or retirement for value of any Equity Interests of Parent,
Issuer, any Restricted Subsidiary of Issuer or any direct or indirect parent of Issuer held by any current or 

  
 A-13 

	 	
former officer, director, employee or consultant of Parent, Issuer or any of its Restricted Subsidiaries pursuant to any equity subscription agreement, stock option agreement, shareholders’
agreement or similar agreement; provided that the aggregate price paid for all such repurchased, redeemed, acquired or retired Equity Interests may not exceed an amount equal to $50.0 million in any fiscal year; provided,
further, that such amount in any fiscal year may be increased by an amount equal to (a) the net cash proceeds contributed to Issuer from the sale of Equity Interests of Parent to current or former members of management, directors,
consultants or employees that occurs after the Closing Date plus (b) the net cash proceeds of key man life insurance policies received by Parent or its Restricted Subsidiaries after the Closing Date; provided, further, that such
amount in any fiscal year shall be reduced by the amount of Indebtedness incurred in such fiscal year pursuant to clause (21) of the second paragraph of the covenant described below under the caption “—Incurrence of Indebtedness and
Issuance of Disqualified Stock and Preferred Stock”; 

  

	(6)	the repurchase, redemption or other acquisition or retirement of Equity Interests deemed to occur upon the exercise or exchange of stock options, warrants or other similar rights to the extent such Equity Interests
represent a portion of the exercise or exchange price of those stock options, warrants or other similar rights, and the repurchase, redemption or other acquisition or retirement of Equity Interests made in lieu of withholding taxes resulting from
the vesting, exercise or exchange of stock options, warrants or other similar rights; 

  

	(7)	the declaration and payment of regularly scheduled or accrued dividends to holders of any class or series of Disqualified Stock of Issuer or any Restricted Subsidiary of Issuer issued on or after the Closing Date in
accordance with the Debt to Cash Flow Ratio test described below under the caption “—Incurrence of Indebtedness and Issuance of Disqualified Stock and Preferred Stock”; 

 

	(8)	Permitted Payments to Parent; 

  

	(9)	the repurchase, redemption or other acquisition or retirement for value of any Equity Interests of Parent to the extent necessary to comply with law or to prevent the loss or secure the renewal or reinstatement of any
FCC License held by Issuer or any of its Subsidiaries; 

  

	(10)	Restricted Investments in an amount equal to 100% of the aggregate amount of any Net Equity Proceeds, less the aggregate amount of any Net Equity Proceeds (x) used for making a Restricted Payment pursuant to clause
(2) of this paragraph or (y) taken into account for purpose of incurring Indebtedness pursuant to clause (14) of the definition of “Permitted Debt” set forth below under the caption “—Incurrence of Indebtedness and
Issuance of Disqualified Stock and Preferred Stock”; 

  

	(11)	payments made to DT or its Subsidiaries from the proceeds of the Towers Transaction; 

  

	(12)	the repurchase, redemption or other acquisition or retirement for value of any Subordinated Indebtedness pursuant to the provisions similar to those described under the captions “—Repurchase at the Option of
Holders—Change of Control Triggering Event” and “—Repurchase at the Option of Holders—Asset Sales”; provided that all notes tendered by the holders of the notes in connection with a Change of Control Offer or
Asset Sale Offer, as applicable, have been repurchased, redeemed or otherwise acquired for value; 

  

	(13)	Restricted Payments in connection with the Cash Payment, as defined in the Business Combination Agreement; 

  

	(14)	the making of cash payments in connection with any conversion of Convertible Debt in an aggregate amount since the Closing Date not to exceed the sum of (a) the principal amount of such Convertible Debt plus
(b) any payments received by Issuer or any of its Restricted Subsidiaries pursuant to the exercise, settlement or termination of any related Permitted Bond Hedge Transactions; 

 

	(15)	the distribution, as a dividend or otherwise, of shares of Capital Stock of, or Indebtedness owed to Issuer or a Restricted Subsidiary by, Unrestricted Subsidiaries (other than any Unrestricted Subsidiary whose
principal assets consist of cash and Cash Equivalents to the extent such cash and Cash Equivalents were invested in a Permitted Investment); 

  
 A-14 

	(16)	other Restricted Payments in an aggregate amount since the Closing Date not to exceed the greater of (x) $375.0 million or (y) 6.0% of the Consolidated Cash Flow of Issuer; and 

 

	(17)	any Restricted Payment; provided that the Debt to Cash Flow Ratio calculated on a pro forma basis in the manner described in the definition of “Debt to Cash Flow Ratio” after giving effect to such
Restricted Payment would be equal to or less than 3.00 to 1.00; 

 provided, however, that at the time of, and after giving effect to,
any Restricted Payment permitted under clauses (16) or (17), no Default or Event of Default has occurred and is continuing or would be caused thereby. 

For purposes of determining compliance with this “Restricted Payments” covenant, in the event that an Investment or Restricted
Payment meets the criteria of more than one of the categories described in clauses (1) through (17) above or one or more of the exceptions contained in the definition of “Permitted Investments”, Issuer will be permitted to
classify all or a portion of such Investment or Restricted Payment on the date of its occurrence, or later reclassify all or a portion of such Investment or Restricted Payment, in any manner that complies with this covenant. 

The amount of all Restricted Payments (other than cash) will be the Fair Market Value on the date of the Restricted Payment of the asset(s) or
securities proposed to be transferred or issued by Issuer or such Restricted Subsidiary, as the case may be, pursuant to the Restricted Payment. 

Incurrence of Indebtedness and Issuance of Disqualified Stock and Preferred Stock 

Issuer will not, and will not permit any of its Restricted Subsidiaries to, directly or indirectly, create, incur, issue, assume, guarantee or
otherwise become directly or indirectly liable, contingently or otherwise, with respect to (collectively, “incur”) any Indebtedness (including Acquired Debt), and Issuer will not issue any Disqualified Stock and will not permit any
of its Restricted Subsidiaries to issue any shares of Preferred Stock; provided, however, that Issuer may incur Indebtedness (including Acquired Debt) or issue Disqualified Stock and the Subsidiary Guarantors may incur Indebtedness
(including Acquired Debt) or issue Preferred Stock, if the Debt to Cash Flow Ratio for Issuer’s most recently ended four full fiscal quarters for which internal financial statements are available immediately preceding the date on which such
additional Indebtedness is incurred or such Disqualified Stock or such Preferred Stock is issued, as the case may be, would have been no greater than 6.00 to 1.00, determined on a pro forma basis (including a pro forma application of the net
proceeds therefrom), as if the additional Indebtedness had been incurred or the Disqualified Stock or the Preferred Stock had been issued, as the case may be, at the beginning of such four-quarter period. 

The first paragraph of this covenant will not prohibit the incurrence of any of the following items of Indebtedness (collectively,
“Permitted Debt”), nor will it prohibit Issuer from issuing the following types of Disqualified Stock or Issuer’s Restricted Subsidiaries from issuing the following types of Preferred Stock: 

 

	(1)	 the incurrence by Issuer and any Subsidiary Guarantor of (a) additional Indebtedness under Credit
Facilities, provided that giving effect to such incurrence, the aggregate principal amount (with letters of credit being deemed to have a principal amount equal to the maximum potential liability of Issuer and its Restricted Subsidiaries
thereunder) of all Indebtedness under Credit Facilities then outstanding under this paragraph (1), together with any Indebtedness incurred pursuant to the following clause (b), does not exceed the greater of (x) $9.0 billion and (y) an
amount such that, upon the incurrence of Indebtedness under this clause (1), the Secured Debt to Cash Flow Ratio of Issuer and its Subsidiaries for the most recently ended four full fiscal quarters for which financial statements are available,
calculated on a pro forma basis in the manner described in the definition of “Secured Debt to Cash Flow Ratio,” shall not exceed 2.00:1.00; provided that for purposes of determining the amount of Indebtedness that may be incurred
under this clause (a)(y), all Indebtedness incurred under this clause (1) shall be treated as Consolidated Indebtedness that is secured by a Lien and (b) without duplication, all Indebtedness incurred to renew, refund, refinance, replace,
defease or discharge any Indebtedness incurred pursuant to the foregoing clause (a); provided, however, that the 

  
 A-15 

	 	
maximum amount permitted under this clause (1) shall not be deemed to limit additional Indebtedness under the Credit Facilities to the extent that the incurrence of such additional
Indebtedness is permitted pursuant to any of the other provisions of this covenant; 

  

	(2)	the incurrence by Issuer and its Restricted Subsidiaries of any Existing Indebtedness or any Series Issue Date Existing Indebtedness; 

 

	(3)	the incurrence by Issuer and the Subsidiary Guarantors of Indebtedness represented by the notes to be issued on the date of the supplemental indentures and the related Note Guarantees; 

 

	(4)	the incurrence by Issuer or any of its Restricted Subsidiaries of Indebtedness represented by Capital Lease Obligations, mortgage financings or purchase money obligations, in each case, incurred for the purpose of
financing (whether prior to or within 270 days after) all or any part of the purchase price or cost of design, construction, installation or improvement of property, plant or equipment or the Capital Stock of any Person owning such assets used in
the business of Issuer or any of its Restricted Subsidiaries, in an aggregate principal amount at any time outstanding, including all Permitted Refinancing Indebtedness incurred to renew, refund, refinance, replace, defease or discharge any
Indebtedness incurred pursuant to this clause (4); 

  

	(5)	the incurrence by Issuer or any of its Restricted Subsidiaries of Permitted Refinancing Indebtedness in exchange for, or the net proceeds of which are used to renew, refund, refinance, replace, defease or discharge any
Indebtedness (other than intercompany Indebtedness) that was permitted by the indenture to be incurred under the first paragraph of this covenant or clauses (2), (3), (4), (5), (13), (14), (15), (24) or (25) of this paragraph;

  

	(6)	the incurrence by Issuer or any of its Restricted Subsidiaries of intercompany Indebtedness between or among Parent, Issuer and any of its Restricted Subsidiaries and any Guarantors; provided, however,
that: 

  

	 	(a)	if Issuer or any Subsidiary Guarantor is the obligor on such Indebtedness and the payee is not Issuer or a Guarantor, such Indebtedness must be expressly subordinated to the prior payment in full in cash of all
Obligations then due with respect to the notes, in the case of Issuer, or the Note Guarantee, in the case of a Subsidiary Guarantor; and 

  

	 	(b)	(i) any subsequent issuance or transfer of Equity Interests that results in any such Indebtedness being held by a Person other than Parent, Issuer or a Restricted Subsidiary of Issuer, or a Guarantor and (ii) any
sale or other transfer of any such Indebtedness to a Person that is not either Parent, Issuer or a Restricted Subsidiary of Issuer, or a Guarantor, will be deemed, in each case, to constitute an incurrence of such Indebtedness by Issuer or such
Restricted Subsidiary, as the case may be, that was not permitted by this clause (6); 

  

	(7)	the issuance by any of Issuer’s Restricted Subsidiaries to Issuer or to any of its Restricted Subsidiaries of shares of Preferred Stock; provided, however, that: 

 

	 	(a)	any subsequent issuance or transfer of Equity Interests that results in any such Preferred Stock being held by a Person other than Parent, Issuer or a Restricted Subsidiary of Issuer or a Guarantor; and

  

	 	(b)	any sale or other transfer of any such Preferred Stock to a Person that is not either Parent, Issuer or a Restricted Subsidiary of Issuer, or a Guarantor, will be deemed, in each case, to constitute an issuance of such
Preferred Stock by such Restricted Subsidiary that was not permitted by this clause (7); 

  

	(8)	the incurrence by Issuer or any of its Restricted Subsidiaries of Hedging Obligations (other than for speculative purposes); 

  

	(9)	the guarantee by Issuer or any of the Subsidiary Guarantors of Indebtedness of Issuer or a Restricted Subsidiary of Issuer that was permitted to be incurred by another provision of this covenant; provided that if
the Indebtedness being guaranteed is subordinated to or pari passu with the notes, then the guarantee shall be subordinated or pari passu, as applicable, to the same extent as the Indebtedness guaranteed; 

 

	(10)	 the incurrence by Issuer or any of its Restricted Subsidiaries of Indebtedness in respect of workers’
compensation claims, self-insurance obligations, bankers’ acceptances, deposits, performance bonds, 

  
 A-16 

	 	
completion bonds, bid bonds, appeal bonds and surety bonds, indemnity bonds, specific performance or injunctive relief bonds or similar bonds or obligations in the ordinary course of business,
and any Guarantees or letters of credit functioning as or supporting any of the foregoing; 

  

	(11)	the incurrence by Issuer or any of its Restricted Subsidiaries of Indebtedness arising from (a) the honoring by a bank or other financial institution of a check, draft or similar instrument drawn against
insufficient funds, so long as such Indebtedness is covered within five Business Days of notice to Issuer or any of its Restricted Subsidiaries, (b) in respect of netting, overdraft protection and other arrangement arising under standard
business terms of any bank at which Issuer or any Restricted Subsidiary maintains an overdraft, cash pooling or other similar facility or arrangement or (c) in respect of the financing of insurance premiums in the ordinary course of business,
provided that the aggregate principal amount of Indebtedness incurred pursuant to clauses (11)(b) and (c) shall not, at any time outstanding, exceed the greater of (x) $250.0 million and (y) 5.0% of the Consolidated Cash
Flow of Issuer as of the time of such incurrence; 

  

	(12)	the incurrence by Issuer or any of its Restricted Subsidiaries of Indebtedness in respect of letters of credit required to be issued in connection with any Permitted Joint Venture Investment; 

 

	(13)	the incurrence by Issuer or any of its Restricted Subsidiaries of Indebtedness for relocation or clearing obligations relating to Issuer’s or any of its Restricted Subsidiary’s FCC Licenses in an aggregate
principal amount (or accreted value, as applicable), including all Permitted Refinancing Indebtedness incurred to renew, refund, refinance, replace, defease or discharge any Indebtedness incurred pursuant to this clause (13), at any time outstanding
not to exceed the greater of (x) $400.0 million and (y) 1.0% of Issuer’s Total Assets as of the time of such incurrence; 

  

	(14)	the incurrence by Issuer or any of its Restricted Subsidiaries of Contribution Indebtedness; 

  

	(15)	the incurrence by Issuer or any of its Restricted Subsidiaries of Indebtedness (including Acquired Debt or Indebtedness) used to finance an acquisition of or a merger with another Person, provided that, Issuer or
the Person formed by or surviving any such consolidation or merger (if other than Issuer or a Restricted Subsidiary), on the date of such transaction after giving pro forma effect thereto and any related financing transactions as if the same had
occurred at the beginning of the applicable four-quarter period, would either (a) be permitted to incur at least $1.00 of additional Indebtedness pursuant to the Debt to Cash Flow Ratio test set forth in the first paragraph of this covenant or
(b) have a Debt to Cash Flow Ratio no greater than the Debt to Cash Flow Ratio of Issuer immediately prior to such transaction; 

  

	(16)	the incurrence by Issuer or any of its Restricted Subsidiaries of Indebtedness arising from agreements providing for indemnification, adjustment of purchase price or similar obligations, or Guarantees or letters of
credit, surety bonds or performance bonds securing any obligations of Issuer or any of its Restricted Subsidiaries pursuant to such agreements, in any case incurred in connection with the disposition of any business, assets or Restricted Subsidiary
(other than Guarantees of Indebtedness incurred by any Person acquiring all or any portion of such business, assets or Restricted Subsidiary for the purpose of financing such acquisition), so long as the amount does not exceed the gross proceeds
actually received by Issuer or any Restricted Subsidiary thereof in connection with such disposition; 

  

	(17)	the incurrence by Issuer or any Restricted Subsidiary of Indebtedness constituting reimbursement obligations with respect to letters of credit issued in the ordinary course of business; provided that, upon the
drawing of such letters of credit, such obligations are reimbursed within 30 days following such drawing; 

  

	(18)	the incurrence by Issuer or any Restricted Subsidiary of Indebtedness to the extent that the net proceeds thereof are promptly deposited to defease or to satisfy and discharge the notes; 

 

	(19)	the incurrence by Issuer or any of the Subsidiary Guarantors of additional Indebtedness in an aggregate principal amount (or accreted value, as applicable) at any time outstanding, including all Permitted Refinancing
Indebtedness incurred to renew, refund, refinance, replace, defease or discharge any Indebtedness incurred pursuant to this clause (19), not to exceed the greater of (x) $1.0 billion and (y) 2.0% of Issuer’s Total Assets as of the
time of such incurrence; 

  
 A-17 

	(20)	the incurrence by Issuer or any Restricted Subsidiary of Indebtedness arising in connection with endorsement of instruments for deposit in the ordinary course of business; 

 

	(21)	the incurrence by Issuer or any Restricted Subsidiary of Indebtedness evidenced by promissory notes subordinated to the notes and the Note Guarantees issued to current or former employees or directors of Parent, Issuer
or any Subsidiary (or their respective spouses or estates) in lieu of cash payments for Capital Stock being repurchased from such Persons, not to exceed, in any twelve-month period, an amount equal to the amount of Restricted Payments that could be
made during such twelve-month period pursuant to clause (5) of the third paragraph under the covenant described above under the caption “—Restricted Payments,” less the amount of Restricted Payments that have been made during
such twelve-month period pursuant to such clause; 

  

	(22)	the incurrence by Issuer or any Restricted Subsidiary of Indebtedness consisting of take-or-pay obligations contained in supply agreements entered into in the ordinary course of business; 

 

	(23)	to the extent that deposits with, or payments owed to, the FCC in connection with the auction or licensing of Governmental Authorizations are deemed to be Indebtedness, the incurrence by Issuer or any Restricted
Subsidiary of such Indebtedness; 

  

	(24)	Indebtedness incurred in connection with the Towers Transaction; and 

  

	(25)	the incurrence by Restricted Subsidiaries that are not Guarantors of Indebtedness; provided, however, that the aggregate principal amount (or accreted value, as applicable) of all Indebtedness incurred
under this clause (25), when aggregated with the principal amount (or accreted value) of all other Indebtedness then outstanding and incurred pursuant to this clause (25), including all Permitted Refinancing Indebtedness incurred to renew, refund,
refinance, replace, defease or discharge any Indebtedness incurred pursuant to this clause (25), does not exceed the greater of (x) $250.0 million and (y) 5.0% of the Consolidated Cash Flow of Issuer and its Subsidiaries for the most
recently ended four full fiscal quarters for which financial statements are available. 

 For purposes of (x) determining
compliance with this “Incurrence of Indebtedness and Issuance of Disqualified Stock and Preferred Stock” covenant, in the event that an item of proposed Indebtedness meets the criteria of more than one of the categories of Permitted Debt
described in clauses (1) through (25) above, or is entitled to be incurred pursuant to the first paragraph of this covenant, Issuer will be permitted to classify all or a portion of such item of Indebtedness on the date of its incurrence,
or later reclassify all or a portion of such item of Indebtedness, in any manner that complies with this covenant; provided, however that Indebtedness outstanding under the Term Loan Credit Agreement on the Issue Date shall be deemed
to have been incurred under clause (1) above and (y) determining the amount of Indebtedness that may be incurred pursuant to clause (1)(a)(y) of the definition of Permitted Debt, Issuer may elect, pursuant to an officers’
certificate delivered to the trustee, to treat all or any portion of the commitment under any Indebtedness (and any refinancing with respect thereto) as being incurred at such time, in which case any subsequent incurrence of Indebtedness under such
commitment or refinancing, as the case may be, shall not be deemed, for purposes of this calculation, to be an incurrence at such subsequent time. The accrual of interest, the accretion or amortization of original issue discount, the payment of
interest on any Indebtedness in the form of additional Indebtedness with the same terms, the reclassification of Preferred Stock as Indebtedness due to a change in accounting principles or the application thereof, and the payment of dividends on
Disqualified Stock in the form of additional shares of the same class of Disqualified Stock will not be deemed to be an incurrence of Indebtedness or an issuance of Disqualified Stock for purposes of this covenant. Notwithstanding any other
provision of this covenant, the maximum amount of Indebtedness that Issuer or any Restricted Subsidiary may incur pursuant to this covenant shall not be deemed to be exceeded solely as a result of fluctuations in exchange rates or currency values,
and in no event shall the reclassification of any lease or other liability as indebtedness due to a change in accounting principles after the Closing Date be deemed to be an incurrence of Indebtedness. In determining the amount of Indebtedness
outstanding under one of the clauses above, the outstanding principal amount of any particular Indebtedness of any Person shall be counted only once and any obligation of such Person or any other Person

  
 A-18 

 
arising under any guarantee, Lien, letter of credit or similar instrument supporting such Indebtedness shall be disregarded so long as it is permitted to be incurred by the Person or Persons
incurring such obligation. 
 The amount of any Indebtedness outstanding as of any date will be: 

 

	 	(1)	the accreted value of the Indebtedness, in the case of any Indebtedness issued with original issue discount; 

  

	 	(2)	in the case of Hedging Obligations, the termination value of the agreement or arrangement giving rise to such obligations that would be payable by such Person at such time; 

 

	 	(3)	the principal amount of the Indebtedness, in the case of any other Indebtedness; and 

  

	 	(4)	in respect of Indebtedness of another Person secured by a Lien on the assets of the specified Person, the lesser of: 

  

	 	(a)	the Fair Market Value of such assets at the date of determination; and 

  

	 	(b)	the amount of the Indebtedness of the other Person. 

 Liens 

Issuer will not, and will not permit any Guarantor to, directly or indirectly, create, incur or assume any Lien securing Indebtedness upon any
asset now owned or hereafter acquired, except Permitted Liens, unless the notes are equally and ratably secured (except that Liens securing Indebtedness that is contractually subordinated to the notes shall be expressly subordinate to any Lien
securing the notes to at least the same extent that such Indebtedness is subordinate to the notes). 
 For purposes of determining
compliance with the covenant, (x) a Lien need not be incurred solely by reference to one category of Permitted Liens but may be incurred under any combination of such categories (including in part under one such category and in part under any
other such category) and (y) in the event that a Lien (or any portion thereof) meets the criteria of one or more of such categories of Permitted Liens, Issuer shall, in its sole discretion, divide, classify or may subsequently reclassify at any
time such Lien (or any portion thereof) in any manner that complies with this covenant and the definition of “Permitted Liens.” 

Dividend and Other Payment Restrictions Affecting Subsidiaries 

Issuer will not, and will not permit any of its Restricted Subsidiaries to, directly or indirectly, create or permit to exist or become
effective any consensual encumbrance or restriction on the ability of any Restricted Subsidiary to: 
  

	(1)	pay dividends or make any other distributions on its Capital Stock to Issuer or any of its Restricted Subsidiaries, or pay any Indebtedness owed to Issuer or any of its Restricted Subsidiaries; 

 

	(2)	make loans or advances to Issuer or any of its Restricted Subsidiaries; or 

  

	(3)	sell, lease or transfer any of its properties or assets to Issuer or any of its Restricted Subsidiaries. 

However, the preceding restrictions will not apply to encumbrances or restrictions existing under or by reason of: 

 

	(1)	agreements or instruments governing (a) Existing Indebtedness and (b) Equity Interests and Credit Facilities as in effect on the Closing Date and, in each case, any amendments, restatements, modifications,
renewals, increases, supplements, refundings, replacements or refinancings of those agreements or instruments; provided that the amendments, restatements, modifications, renewals, increases, supplements, refundings, replacements or
refinancings are (in the good faith judgment of the Board of Directors of Issuer or a senior financial officer of Issuer, whose determination shall be conclusive) not materially more restrictive, taken as a whole, with respect to such dividend and
other payment restrictions than those contained in those agreements or instruments on the Closing Date; 

  
 A-19 

	(2)	agreements or instruments governing Credit Facilities not in effect on the Closing Date so long as either (a) the encumbrances and restrictions contained therein do not impair the ability of any Restricted
Subsidiary of Issuer to pay dividends or make any other distributions or payments directly or indirectly to Issuer in an amount sufficient to permit Issuer to pay the principal of, or interest and premium, if any, on the notes, or (b) the
encumbrances and restrictions contained therein are no more restrictive, taken as a whole, than those contained in the indenture; 

  

	(3)	Series Issue Date Existing Indebtedness, the notes issued on the Series Issue Date, and any additional notes of the same series, the Note Guarantees in respect thereof, and the base indenture, as supplemented by the
supplemental indenture; 

  

	(4)	applicable law, rule, regulation or order; 

  

	(5)	agreements or instruments with respect to a Person acquired by Issuer or any of its Restricted Subsidiaries as in effect at the time of such acquisition (except to the extent such Indebtedness or Capital Stock was
incurred in connection with or in contemplation of such acquisition) or as may be amended, restated, modified, renewed, extended, supplemented, refunded, replaced or refinanced from time to time (so long as the encumbrances and restrictions in any
such amendment, restatement, modification, renewal, extension, supplement, refunding, replacement or refinancing are, in the good faith judgment of Issuer’s Board of Directors or a senior financial officer of Issuer, whose determination shall
be conclusive, not materially more restrictive, taken as a whole, than those in effect on the date of the acquisition), which encumbrance or restriction is not applicable to any Person, or the properties or assets of any Person, other than the
Person, or the property or assets of the Person, so acquired; provided that, in the case of agreements or instruments governing Indebtedness, such Indebtedness was permitted by the terms of the indenture to be incurred; 

 

	(6)	customary non-assignment provisions in contracts and licenses entered into in the ordinary course of business and customary contractual restrictions on transfers of all or substantially all assets of a Person;

  

	(7)	any instrument governing any secured Indebtedness or Capital Lease Obligation that imposes restrictions on the assets securing such Indebtedness or the subject of such lease of the nature described in clause (3) of
the preceding paragraph; 

  

	(8)	any agreement for the sale or other disposition of a Restricted Subsidiary that imposes restrictions of the nature described in clauses (1) and/or (3) of the preceding paragraph on the Restricted Subsidiary
pending the sale or other disposition; 

  

	(9)	Permitted Refinancing Indebtedness; provided that the restrictions contained in the agreements governing such Permitted Refinancing Indebtedness are not materially more restrictive, taken as a whole, than those
contained in the agreements governing the Indebtedness being refinanced; 

  

	(10)	Liens permitted to be incurred under the provisions of the covenant described above under the caption “—Liens” that limit the right of the debtor to dispose of the assets subject to such Liens;

  

	(11)	provisions limiting the disposition or distribution of assets or property in partnership and joint venture agreements, asset sale agreements, sale-leaseback agreements, stock sale agreements and other similar
agreements, which limitation is applicable only to the assets that are the subject of such agreements; 

  

	(12)	restrictions on cash or other deposits or net worth imposed by customers, suppliers or landlords or required by insurance, surety or bonding companies, in each case, under contracts entered into in the ordinary course
of business; 

  

	(13)	restrictions in other Indebtedness, Disqualified Stock or Preferred Stock incurred or issued in compliance with the covenant described under the caption “—Incurrence of Indebtedness and Issuance of
Disqualified Stock and Preferred Stock”; provided that such restrictions, taken as a whole, are, in the good faith judgment of Issuer’s Board of Directors or a senior financial officer of Issuer, whose determination shall be
conclusive, not materially more restrictive than those contained in the existing agreements referenced in clauses (1) and (3) above; 

  
 A-20 

	(14)	the issuance of Preferred Stock by a Restricted Subsidiary of Issuer or the payment of dividends thereon in accordance with the terms thereof; provided that issuance of such Preferred Stock is permitted pursuant
to the covenant described above under the caption “—Incurrence of Indebtedness and Issuance of Disqualified Stock and Preferred Stock” and the terms of such Preferred Stock do not expressly restrict the ability of such Restricted
Subsidiary to pay dividends or make any other distributions on its Capital Stock (other than requirements to pay dividends or liquidation preferences on such Preferred Stock prior to paying any dividends or making any other distributions on such
other Capital Stock); 

  

	(15)	any agreement or instrument with respect to Indebtedness incurred, or Preferred Stock issued, by any Restricted Subsidiary, provided that the restrictions contained in the agreements or instruments governing such
Indebtedness or Preferred Stock (a) either (i) apply only in the event of a payment default or a default with respect to a financial covenant in such agreement or instrument or (ii) will not materially affect Issuer’s ability to
pay all principal, interest and premium, if any, on the notes, as determined in good faith by Issuer’s Board of Directors or a senior financial officer of Issuer, whose determination shall be conclusive; and (b) are not materially more
disadvantageous to the holders of the notes than is customary in comparable financings; 

  

	(16)	any agreement or instrument of Issuer, Parent, MetroPCS Wireless, Inc., or any of MetroPCS Wireless, Inc.’s Subsidiaries existing prior to, or entered into or assumed by Issuer or any of its Subsidiaries in
connection with the Merger, in each case, as such agreements or instruments may be amended, restated, modified, renewed or replaced from time to time; provided that the amendments, restatements, modifications, renewals, and replacements are
(in the good faith judgment of the Board of Directors of Issuer or a senior financial officer of Issuer, whose determination shall be conclusive) not materially more restrictive, taken as a whole, with respect to such encumbrances and restrictions
than those agreements or instruments as in effect as of the Closing Date; and 

  

	(17)	restrictions arising from the Towers Transaction. 

 Merger, Consolidation or Sale of
Assets 
 Issuer will not: (1) consolidate or merge with or into another Person (whether or not Issuer is the surviving
corporation); or (2) directly or indirectly sell, assign, lease, transfer, convey or otherwise dispose of all or substantially all of the properties or assets of Issuer and its Restricted Subsidiaries taken as a whole, in one or more related
transactions, to another Person, unless: 
  

	(1)	either: (a) Issuer is the surviving corporation; or (b) the Person formed by or surviving any such consolidation or merger (if other than Issuer) or to which such sale, assignment, lease, transfer, conveyance
or other disposition has been made is a corporation, limited liability company or partnership organized or existing under the laws of the United States, any state of the United States or the District of Columbia; 

 

	(2)	the Person formed by or surviving any such consolidation or merger (if other than Issuer) or the Person to which such sale, assignment, lease, transfer, conveyance or other disposition has been made expressly assumes,
by a supplemental indenture, executed and delivered to the trustee, the payment of the principal of and any premium and interest on the notes and the performance or observance of every covenant of the indenture on the part of Issuer to be performed
or observed; 

  

	(3)	immediately after such transaction, no Default or Event of Default exists; and 

  

	(4)	Issuer or the Person formed by or surviving any such consolidation or merger (if other than Issuer), or to which such sale, assignment, lease, transfer, conveyance or other disposition has been made would, on the date
of such transaction after giving pro forma effect thereto and any related financing transactions as if the same had occurred at the beginning of the applicable four-quarter period, either (a) be permitted to incur at least $1.00 of additional
Indebtedness pursuant to the Debt to Cash Flow Ratio test set forth in the first paragraph of the covenant described above under the caption “—Incurrence of Indebtedness and Issuance of Disqualified Stock and Preferred Stock” or
(b) have a Debt to Cash Flow Ratio no greater than the Debt to Cash Flow Ratio of Issuer immediately prior to such transaction. 

  
 A-21 

 Upon any consolidation or merger, or any sale, transfer, assignment, lease, conveyance or other
disposition of all or substantially all of the properties or assets of Issuer and its Restricted Subsidiaries, taken as a whole, in a transaction that is subject to, and that complies with the provisions of, this “Merger, Consolidation or Sale
of Assets” covenant, the successor Person formed by such consolidation or into or with which Issuer is merged or to which such sale, transfer, assignment, lease, conveyance or other disposition is made, shall succeed to, and be substituted for
Issuer (so that from and after the date of such consolidation, merger, sale, assignment, transfer, lease, conveyance or other disposition, the provisions of the indenture referring to Issuer shall refer instead to the successor Person and not to
Issuer), and may exercise every right and power of Issuer under the indenture with the same effect as if such successor Person had been named as Issuer therein. When the successor Person assumes all of Issuer’s obligations under the indenture,
Issuer shall be discharged from those obligations. 
 This “Merger, Consolidation or Sale of Assets” covenant will not apply to
(and the following shall be permitted notwithstanding such covenant): 
  

	(1)	a merger of Issuer with a direct or indirect Subsidiary of Parent solely for the purpose of reincorporating Issuer in another jurisdiction in the United States so long as the amount of Indebtedness of Issuer and its
Restricted Subsidiaries is not increased thereby; 

  

	(2)	any consolidation or merger, or any sale, assignment, transfer, conveyance, lease or other disposition of assets between or among Issuer and its Restricted Subsidiaries; or 

 

	(3)	the Transactions, including the Merger. 

 Transactions with Affiliates 

Issuer will not, and will not permit any of its Restricted Subsidiaries to, make any payment to, or sell, lease, transfer or otherwise dispose
of any of its properties or assets to, or purchase any property or assets from, or enter into or make or amend any transaction, contract, agreement, understanding, loan, advance or guarantee with, or for the benefit of, any Affiliate of Issuer
(each, an “Affiliate Transaction”), in any one or series of related transactions involving aggregate payments or consideration in excess of $50.0 million, unless: 

 

	(1)	the Affiliate Transaction is on terms that, taken as a whole, are no less favorable to Issuer or the relevant Restricted Subsidiary than those that would have been obtained in a comparable transaction by Issuer or such
Restricted Subsidiary with an unrelated Person; and 

  

	(2)	Issuer delivers to the trustee: 

  

	 	(a)	with respect to any Affiliate Transaction or series of related Affiliate Transactions involving aggregate consideration in excess of $100.0 million, an officers’ certificate certifying that such Affiliate
Transaction complies with this covenant; and 

  

	 	(b)	with respect to any Affiliate Transaction or series of related Affiliate Transactions involving aggregate consideration in excess of $250.0 million, a resolution of the Board of Directors of Issuer set forth in an
officers’ certificate certifying that such Affiliate Transaction complies with this covenant and that such Affiliate Transaction has been approved by a majority of the disinterested members of the Board of Directors of Issuer.

 The following items will not be deemed to be Affiliate Transactions and, therefore, will not be subject to the provisions
of the prior paragraph: 
  

	(1)	any employment agreement, employee benefit plan, agreement or plan relating to employee, officer or director compensation or severance, officer or director indemnification agreement or any similar arrangement entered
into by Issuer, any of its Restricted Subsidiaries or a direct or indirect parent of Issuer existing on the Closing Date, or entered into thereafter in the ordinary course of business, and any indemnities or other transactions permitted or required
by bylaw, statutory provisions or any of the foregoing agreements, plans or arrangements and payments pursuant thereto; 

  
 A-22 

	(2)	transactions between or among Parent, Issuer and/or its Restricted Subsidiaries; 

  

	(3)	transactions with a Person (other than an Unrestricted Subsidiary of Issuer) that is an Affiliate of Issuer solely because Issuer owns, directly or through a Restricted Subsidiary, an Equity Interest in, or controls,
such Person; 

  

	(4)	any issuance of Equity Interests (other than Disqualified Stock) of Issuer to, or receipt of any capital contribution from, any Affiliate of Issuer; 

 

	(5)	transactions in connection with any Permitted Joint Venture Investment; 

  

	(6)	any Permitted Investments or Restricted Payments that do not violate the provisions of the indenture described above under the caption “—Restricted Payments”; 

 

	(7)	(x) any contracts, agreements or understandings existing as of the Issue Date and disclosed in the notes to the consolidated financial statements of MetroPCS Wireless, Inc. for the year ended December 31, 2012,
(y) any agreement listed on Schedule 3.2(r)—Related-Party Agreements—to the “T-Mobile Disclosure Letter” to the Business Combination Agreement, and (z) any agreement listed under the section entitled “Transactions
with Related Persons and Approval” in the proxy statement of Parent filed with the SEC under cover of Schedule 14A on April 16, 2012 and, in each case, any amendments to, replacements of, or orders pursuant to such contracts, agreements or
understandings so long as any such amendments, replacements, or orders, taken as a whole, are not (in the good faith judgment of Issuer’s Board of Directors or a senior financial officer of Issuer, whose determination shall be conclusive) more
disadvantageous to Issuer or to the holders of the notes in any material respect than the original contracts, agreements or understandings as in effect on the Closing Date; 

 

	(8)	transactions with customers, clients, suppliers, purchasers, sellers of goods or services, or licensees of intellectual property, in each case in the ordinary course of business and otherwise in compliance with the
terms of the indenture, provided that in the good faith determination of Issuer’s Board of Directors or a senior financial officer of Issuer, which determination shall be conclusive, such transactions are on terms, taken as a whole, not
materially less favorable to Issuer or the applicable Restricted Subsidiary than those that could reasonably be expected to be obtained in a comparable transaction at such time on an arm’s length basis from a Person that is not an Affiliate of
Issuer; 

  

	(9)	issuances, exchanges, purchases or repurchases of notes or other Indebtedness of Issuer or its Restricted Subsidiaries or solicitations of amendments, waivers or consents in respect of notes or such other Indebtedness,
if such issuance, exchange, purchase, repurchase or solicitation is approved by a majority of the disinterested members of the Board of Directors of Issuer; 

  

	(10)	reasonable payments made for any financial advisory, financing, underwriting, placement or syndication services approved by Issuer’s Board of Directors or a senior financial officer of Issuer in good faith;

  

	(11)	amendments, extensions, replacements and other modifications of transactions with Affiliates otherwise permitted by the indenture, provided that in the good faith determination of Issuer’s Board of Directors
or a senior financial officer of Issuer, which determination shall be conclusive, such amendments, extensions, replacements or other modifications, taken as a whole, are no less favorable in any material respect to Issuer or the applicable
Restricted Subsidiary than the transaction or transactions being amended, extended, replaced or modified; and 

  

	(12)	 (i) the Business Combination Agreement and any Ancillary Agreements, as defined in the Business Combination
Agreement, in each case, as the same may be amended, modified, supplemented or replaced from time to time on terms that, taken as a whole, in the good faith determination of Issuer’s Board of Directors or a senior financial officer of Issuer,
which determination shall be conclusive, are not materially less favorable to Issuer or the applicable Restricted Subsidiary than those of the agreement being amended, modified, supplemented or replaced, (ii) transactions or agreements relating
to the DT Notes and the TMUS Working Capital Facility, each as may be amended, modified, or supplemented from time to time, and any indebtedness incurred in connection with the refinancing of the foregoing, on terms that, taken as a whole,

  
 A-23 

	 	
in the good faith determination of Issuer’s Board of Directors or a senior financial officer of Issuer, which determination shall be conclusive, are not materially less favorable to Issuer
than those of the DT Notes or TMUS Working Capital Facility, as applicable, and (iii) transactions between Issuer and its Restricted Subsidiaries, on the one hand, and any Designated Tower Entities that have been designated as Unrestricted
Subsidiaries, on the other hand, in connection with the Towers Transaction. 

 Additional Note Guarantees 

If (a) Issuer or any of Issuer’s Domestic Restricted Subsidiaries acquires or creates another Domestic Restricted Subsidiary (and
such Subsidiary is a Wholly-Owned Subsidiary and is neither a Designated Tower Entity, the Reinsurance Entity nor an Immaterial Subsidiary) after the Series Issue Date or (b) any Restricted Subsidiary of Issuer guarantees any Specified Issuer
Indebtedness of Issuer after the Series Issue Date or (c) Parent or any Subsidiary of Parent acquires or creates a Subsidiary that directly or indirectly owns Equity Interests of Issuer, then Issuer or Parent, as applicable, will cause that
newly acquired or created Domestic Restricted Subsidiary, Restricted Subsidiary or Subsidiary of Parent to become a Guarantor of the notes and execute a supplemental indenture and, if requested by the trustee, deliver an opinion of counsel
reasonably satisfactory to the trustee within 10 Business Days after the date on which it was acquired or created or guarantees such Specified Issuer Indebtedness, as applicable, or reasonably promptly thereafter. 

Designation of Restricted and Unrestricted Subsidiaries 

The Board of Directors of Issuer may designate any Restricted Subsidiary to be an Unrestricted Subsidiary if that designation would not cause a
Default. If a Restricted Subsidiary is designated as an Unrestricted Subsidiary, (i) the aggregate Fair Market Value of all outstanding Investments owned by Issuer and its Restricted Subsidiaries in the Subsidiary designated as an Unrestricted
Subsidiary will be deemed to be an Investment made as of the time of the designation and will reduce the amount available for Restricted Payments under the covenant described above under the caption “—Restricted Payments” or under one
or more clauses of the definition of Permitted Investments, as determined by Issuer in its discretion, and (ii) any Guarantee by Issuer or any Restricted Subsidiary thereof of any Indebtedness of the Restricted Subsidiary being so designated
will be deemed to be an incurrence of Indebtedness by Issuer or such Restricted Subsidiary (or both, if applicable) at the time of such designation. That designation will only be permitted if the Investment and/or incurrence of Indebtedness would be
permitted at that time and if the Restricted Subsidiary otherwise meets the definition of an Unrestricted Subsidiary. The Board of Directors of Issuer may redesignate any Unrestricted Subsidiary to be a Restricted Subsidiary if that redesignation
would not cause a Default. 
 Any designation of a Subsidiary of Issuer as an Unrestricted Subsidiary will be evidenced to the trustee by
filing with the trustee a certified copy of a resolution of the Board of Directors giving effect to such designation and an officers’ certificate certifying that such designation complied with the preceding conditions and was permitted by the
covenant described above under the caption “—Restricted Payments.” The Board of Directors of Issuer may at any time designate any Unrestricted Subsidiary to be a Restricted Subsidiary of Issuer; provided that such designation
will be deemed to be an incurrence of Indebtedness by a Restricted Subsidiary of Issuer of any outstanding Indebtedness of such Unrestricted Subsidiary, and such designation will only be permitted if (1) such Indebtedness is permitted under the
covenant described under the caption “—Incurrence of Indebtedness and Issuance of Disqualified Stock and Preferred Stock,” calculated on a pro forma basis as if such designation had occurred at the beginning of the four-quarter
reference period; and (2) no Default would be in existence following such designation, and as a result of, such designation. 

Notwithstanding the foregoing, Issuer may at any time and from time to time designate any Designated Entity, by written notice to the trustee,
as an Unrestricted Subsidiary, and any such Subsidiary shall upon such notice immediately be designated and deemed an Unrestricted Subsidiary, without any further action by Issuer (and, for the avoidance of doubt, shall not require delivery of a
resolution of the Board of Directors or of an officers’ certificate) (each, a “Specified Unrestricted Subsidiary Designation”). The aggregate Fair Market Value 

  
 A-24 

 
of all outstanding Investments owned by Issuer and its Restricted Subsidiaries in such Designated Entities so designated as Unrestricted Subsidiaries will, as calculated and to the extent
permitted by clause (18) of the definition of Permitted Investments, be deemed to be an Investment made as of the time of such Specified Unrestricted Subsidiary Designation under such clause (18), and not reduce the amount available for
Restricted Payments under the covenant described above under the caption “—Restricted Payments.” 
 Reports

 Whether or not required by the rules and regulations of the SEC, so long as any notes are outstanding, Parent will file a copy of
each of the reports referred to in clauses (1) and (2) below with the SEC for public availability within the time periods (including all applicable extension periods) specified in the SEC rules and regulations applicable to such reports
(unless the SEC will not accept such a filing): 
  

	(1)	all quarterly and annual financial reports that would be required to be contained in a filing with the SEC on Forms 10-Q and 10-K if Parent were required to file such reports, including a “Management’s
Discussion and Analysis of Financial Condition and Results of Operations” and, with respect to the annual information only, a report on the annual financial statements by its certified independent accountants; and 

 

	(2)	all current reports that would be required to be filed with the SEC on Form 8-K if Parent or Issuer were required to file such reports; 

provided that the availability of the foregoing reports on the SEC’s EDGAR service (or successor thereto) shall be deemed to satisfy Issuer’s
delivery obligations to the trustee and any holder of notes. 
 All such reports will be prepared in all material respects in accordance
with all of the rules and regulations applicable to such reports; provided that, if neither Parent nor Issuer is required under the rules and regulations of the SEC to file such reports with the SEC for public availability, such reports need
not be prepared in accordance with all of the rules and regulations applicable to such reports and shall only be required to include the information or disclosure that would be required by such form to the extent that, and in the same general style
of presentation as, the same or substantially similar information or disclosure is also included in the offering memorandum dated March 8, 2013 relating to the $1.75B Notes. Each annual report on Form 10-K will include a report on Parent’s
consolidated financial statements by Parent’s certified independent accountants. Issuer will at all times comply with TIA §314(a). 

If the SEC will not accept Parent’s or Issuer’s filings for any reason, Parent or Issuer will post the reports referred to in the
preceding paragraphs on its website, on intralinks.com or another website within the time periods that would apply if Parent were required to file those reports with the SEC (including all applicable extension periods). If (i) Issuer has
designated any of its Subsidiaries as Unrestricted Subsidiaries or (ii) the combined operations of Parent and its Subsidiaries, excluding the operations of Issuer and its Restricted Subsidiaries and excluding cash and Cash Equivalents, would,
if held by a single Unrestricted Subsidiary of Issuer, constitute a Significant Subsidiary of Issuer, then the quarterly and annual financial information required by the preceding paragraphs will include a reasonably detailed presentation, either on
the face of the financial statements or in the footnotes thereto, and in Management’s Discussion and Analysis of Financial Condition and Results of Operations, of (A) in the case of (i) above, the financial condition and results of
operations of Parent, Issuer and its Restricted Subsidiaries separate from the financial condition and results of operations of the Unrestricted Subsidiaries of Issuer and (B) in the case of (ii) above, the financial condition and results
of operations of Issuer and its Restricted Subsidiaries separate from the financial condition and results of operations of Parent and its other Subsidiaries; provided, however, that the requirements of this paragraph shall not apply if
Parent or Issuer files with the SEC the reports referred to in clauses (1) and (2) of the first paragraph of this covenant, and any such report contains the information required in this paragraph. 

For so long as any notes remain outstanding, if at any time they are not required to file with the SEC the reports required by the preceding
paragraphs, Issuer and the Guarantors will furnish to the holders of notes and to 

  
 A-25 

 
securities analysts and prospective investors, upon their request, the information required to be delivered pursuant to Rule 144A(d)(4) under the Securities Act of 1933, as amended (the
“Securities Act”). 
 Events of Default and Remedies 

Each of the following is an “Event of Default” in respect of the notes of a series: 

 

	(1)	default for 30 days in the payment when due of interest on the notes of such series; 

  

	(2)	default in the payment when due (at maturity, upon redemption or otherwise) of the principal of, or premium, if any, on, the notes of such series; 

 

	(3)	failure by Issuer for 120 days after notice to Issuer by the trustee or the holders of at least 25% in aggregate principal amount of the notes of such series then outstanding voting as a single class to comply with the
provisions described under the caption “—Reports”; 

  

	(4)	failure by Issuer or any of its Restricted Subsidiaries for 30 days after notice to Issuer by the trustee or the holders of at least 25% in aggregate principal amount of the notes of such series then outstanding voting
as a single class to comply with the provisions described under the captions “—Repurchase at the Option of Holders—Change of Control Triggering Event” or “—Repurchase at the Option of Holders—Asset Sales” (in
each case other than a failure to purchase notes that will constitute an Event of Default under clause (2) above), or “—Certain Covenants—Merger, Consolidation or Sale of Assets”; 

 

	(5)	failure by Issuer or any of its Restricted Subsidiaries for 90 days after notice to Issuer by the trustee or the holders of at least 25% in aggregate principal amount of the notes of such series then outstanding voting
as a single class to comply with any of the other agreements in the indenture; 

  

	(6)	default under any mortgage, indenture or instrument under which there may be issued or by which there may be secured or evidenced any Indebtedness for money borrowed by Issuer or any of its Restricted Subsidiaries that
is a Significant Subsidiary (or any Restricted Subsidiaries that together would constitute a Significant Subsidiary) (or the payment of which is guaranteed by Issuer or any of its Restricted Subsidiaries that would constitute a Significant
Subsidiary), whether such Indebtedness or Guarantee now exists, or is created after the Series Issue Date with respect to such series of notes, if that default: 

  

	 	(a)	is caused by a failure to pay principal of, or interest or premium, if any, on, such Indebtedness prior to the expiration of the grace period provided in such Indebtedness on the date of such default (a “Payment
Default”); or 

  

	 	(b)	results in the acceleration of such Indebtedness prior to its express maturity; 

 and, in each
case, the principal amount of any such Indebtedness, together with the principal amount of any other such Indebtedness under which there has been a Payment Default or the maturity of which has been so accelerated, aggregates an amount equal to
$100.0 million or more, in each case for so long as such failure or acceleration is continuing; 
  

	(7)	failure by Issuer or any of its Restricted Subsidiaries that is a Significant Subsidiary (or any Restricted Subsidiaries that together would constitute a Significant Subsidiary) to pay or discharge final judgments
entered by a court or courts of competent jurisdiction aggregating in excess of $100.0 million (to the extent not covered by insurance), which judgments are not paid, discharged or stayed for a period of 60 consecutive days following entry of such
final judgment or decree during which a stay of enforcement of such final judgment or decree, by reason of pending appeal or otherwise, is not in effect; 

  

	(8)	Issuer or any of its Restricted Subsidiaries that is a Significant Subsidiary, or any group of Restricted Subsidiaries of Issuer that, taken together, would constitute a Significant Subsidiary, pursuant to or within the
meaning of Bankruptcy Law: 

  

	 	(a)	commences a voluntary case, 

  

	 	(b)	consents to the entry of an order for relief against it in an involuntary case, 

  
 A-26 

	 	(c)	consents to the appointment of a custodian of it or for all or substantially all of its property, 

  

	 	(d)	makes a general assignment for the benefit of its creditors, or 

  

	 	(e)	generally is not paying its debts as they become due; 

  

	(9)	a court of competent jurisdiction enters a final order or decree under any Bankruptcy Law that: 

  

	 	(a)	is for relief against Issuer or any of its Restricted Subsidiaries that is a Significant Subsidiary or any group of Restricted Subsidiaries of Issuer that, taken together, would constitute a Significant Subsidiary in an
involuntary case; 

  

	 	(b)	appoints a custodian of Issuer or any of its Restricted Subsidiaries that is a Significant Subsidiary or any group of Restricted Subsidiaries of Issuer that, taken together, would constitute a Significant Subsidiary or
for all or substantially all of the property of Issuer or any of its Restricted Subsidiaries that is a Significant Subsidiary or any group of Restricted Subsidiaries of Issuer that, taken together, would constitute a Significant Subsidiary; or

  

	 	(c)	orders the liquidation of Issuer or any of its Restricted Subsidiaries that is a Significant Subsidiary or any group of Restricted Subsidiaries of Issuer that, taken together, would constitute a Significant Subsidiary;

  

	 	(d)	and the final order or decree remains unstayed and in effect for 60 consecutive days; and 

  

	(10)	except as permitted by the indenture, any Note Guarantee with respect to the notes of such series is held in any judicial proceeding to be unenforceable or invalid or ceases for any reason to be in full force and
effect, or any Guarantor, or any Person acting on behalf of any such Guarantor, denies or disaffirms its obligations under its Note Guarantee. 

In the case of an Event of Default arising from certain events of bankruptcy or insolvency, with respect to Issuer, any Restricted Subsidiary
of Issuer that is a Significant Subsidiary or any group of Restricted Subsidiaries of Issuer that, taken together, would constitute a Significant Subsidiary, all outstanding notes of such series will become due and payable immediately without
further action or notice. However, the effect of such provisions may be limited by applicable laws. If any other Event of Default occurs and is continuing with respect to the any series of notes, the trustee or the holders, with a copy to the
trustee, of at least 25% in aggregate principal amount of the then outstanding notes of such series may declare all the notes of such series to be due and payable immediately. 

Subject to certain limitations, the holders of a majority in aggregate principal amount of the then outstanding notes of such series may
direct the trustee in its exercise of any trust or power. The trustee may withhold from holders of the notes notice of any continuing Default or Event of Default if it determines that withholding notice is in their interest, except a Default or
Event of Default in the payment of interest or premium, if any, on, or the principal of, the notes of such series. 
 Subject to the
provisions of the indenture relating to the duties of the trustee, the trustee will be under no obligation to exercise any of the rights or powers under the indenture at the request or direction of any holders of notes unless such holders have
offered to the trustee indemnity or security satisfactory to it against any loss, liability or expense. 
 Except to enforce the right to
receive payment of principal, premium, if any, or interest when due, no holder of a note may pursue any remedy with respect to the indenture or the notes unless: 
  

	(1)	such holder has previously given to the trustee written notice that an Event of Default is continuing; 

  

	(2)	holders of at least 25% in aggregate principal amount of the then outstanding notes of the applicable series have made a written request to the trustee to institute proceedings in respect of such Event of Default in its
own name as trustee; 

  
 A-27 

	(3)	such holder or holders have offered the trustee security or indemnity satisfactory to it against any loss, liability or expense to be incurred in compliance with such request; 

 

	(4)	the trustee has not complied with such request within 90 days after receipt of the request and the offer of security or indemnity; and 

 

	(5)	during such 90-day period, holders of a majority in aggregate principal amount of the then outstanding notes of the applicable series have not given the trustee a direction inconsistent with such request.

 The holders of a majority in aggregate principal amount of the then outstanding notes of a series by written notice to the
trustee may, on behalf of the holders of all of the notes of such series, rescind an acceleration or waive any existing Default or Event of Default in respect of such series and its consequences under the indenture except a continuing Default or
Event of Default in the payment of interest or premium, if any, on, or the principal of, the notes of such series. 
 In the case of any
Event of Default occurring by reason of any willful action (or inaction) taken (or not taken) by or on behalf of Issuer with the intention of avoiding payment of the premium that Issuer would have had to pay if Issuer then had elected to redeem the
notes pursuant to the optional redemption provisions of the indenture, an equivalent premium will also become and be immediately due and payable to the extent permitted by law upon the acceleration of the notes of such series. 

Issuer is required to deliver to the trustee annually a statement regarding compliance with the indenture. Upon becoming aware of any Default
or Event of Default, Issuer is required to deliver to the trustee a statement specifying such Default or Event of Default. 
 No Personal Liability of
Directors, Officers, Employees and Stockholders 
 No past, present or future director, officer, member, manager, partner, employee,
incorporator or stockholder of Issuer or any Guarantor, as such, will have any liability for any obligations of Issuer or the Guarantors under the notes, the indenture, the Note Guarantees, or for any claim based on, in respect of, or by reason of,
such obligations or their creation. Each holder of notes by accepting a note waives and releases all such liability. The waiver and release are part of the consideration for issuance of the notes. The waiver may not be effective to waive liabilities
under the federal securities laws. 
 Legal Defeasance and Covenant Defeasance 

Issuer may at any time, at the option of its Board of Directors evidenced by a resolution set forth in an officers’ certificate, elect to
have all of its obligations discharged with respect to the outstanding notes of any series and all obligations of the Guarantors discharged with respect to their Note Guarantees with respect to such series (“Legal Defeasance”)
except for: 
  

	(1)	the rights of holders of outstanding notes of such series to receive payments in respect of the principal of, or interest or premium, if any, on, the notes when such payments are due from the trust referred to below;

  

	(2)	Issuer’s obligations with respect to the notes of such series concerning issuing temporary notes, registration of notes, mutilated, destroyed, lost or stolen notes and the maintenance of an office or agency for
payment of money for security payments held in trust; 

  

	(3)	the rights, powers, trusts, duties, indemnities and immunities of the trustee, and Issuer’s and the Guarantors’ obligations in connection therewith; and 

 

	(4)	the Legal Defeasance and Covenant Defeasance provisions of the indenture. 

 In addition, Issuer
may, at its option and at any time with respect to any series of notes, elect to have the obligations of Issuer and the Guarantors released with respect to the provisions of the indenture described above

  
 A-28 

 
under “—Repurchase at the Option of Holders” and under the caption “—Certain Covenants” (other than the covenant described under the caption “—Certain
Covenants—Merger, Consolidation or Sale of Assets,” except to the extent described below) and the limitation imposed by clause (4) under the caption “—Certain Covenants—Merger, Consolidation or Sale of Assets”
(such release and termination being referred to as “Covenant Defeasance”), and thereafter any omission to comply with such obligations or provisions will not constitute a Default or Event of Default with respect to such notes. In the event
Covenant Defeasance occurs with respect to any series of notes in accordance with the indenture, the Events of Default described under clauses (3) through (9) under the caption “—Events of Default and Remedies” (in the case
of clauses (8) and (9), only with respect to Issuer’s Subsidiaries), in each case, will no longer constitute an Event of Default. 

In order to exercise either Legal Defeasance or Covenant Defeasance with respect to any series of notes: 

 

	(1)	Issuer must irrevocably deposit with the trustee or its designee, in trust, for the benefit of the holders of such series of notes, cash in U.S. dollars, non- callable Government Securities, or a combination of cash in
U.S. dollars and non-callable Government Securities, in such amounts as will be sufficient, in the opinion of a nationally recognized investment bank, appraisal firm or firm of independent public accountants, to pay the principal of, and premium, if
any, and interest on, the outstanding notes of such series on the stated date for payment thereof or on the applicable redemption date, as the case may be, and Issuer must specify whether such notes are being defeased to such stated date for payment
or to a particular redemption date; 

  

	(2)	in the case of Legal Defeasance, Issuer must deliver to the trustee an opinion of counsel reasonably acceptable to the trustee (which opinion of counsel may be subject to customary assumptions, qualifications and
exclusions) confirming that (a) Issuer has received from, or there has been published by, the Internal Revenue Service a ruling or (b) since the Closing Date, there has been a change in the applicable U.S. federal income tax law, in either
case to the effect that, and based thereon such opinion of counsel shall confirm that, the holders of the outstanding notes of such series will not recognize income, gain or loss for U.S. federal income tax purposes as a result of such Legal
Defeasance and will be subject to U.S. federal income tax on the same amounts, in the same manner and at the same times as would have been the case if such Legal Defeasance had not occurred; 

 

	(3)	in the case of Covenant Defeasance, Issuer must deliver to the trustee an opinion of counsel reasonably acceptable to the trustee (which opinion of counsel may be subject to customary assumptions, qualifications and
exclusions) confirming that the holders of the outstanding notes of such series will not recognize income, gain or loss for U.S. federal income tax purposes as a result of such Covenant Defeasance and will be subject to U.S. federal income tax on
the same amounts, in the same manner and at the same times as would have been the case if such Covenant Defeasance had not occurred; 

  

	(4)	no Default or Event of Default has occurred and is continuing with respect to such series of notes on the date of such deposit (other than a Default or Event of Default resulting from the borrowing of funds, or the
imposition of Liens in connection therewith, to be applied to such deposit, or a Default or Event of Default that will be cured by such Covenant Defeasance or Legal Defeasance) and the deposit will not result in a breach or violation of, or
constitute a default under, any material instrument to which Issuer or any Guarantor is a party or by which Issuer or any Guarantor is bound; 

  

	(5)	such Legal Defeasance or Covenant Defeasance will not result in a breach or violation of, or constitute a default under, any material agreement or instrument (other than the indenture) to which Issuer or any of its
Subsidiaries is a party or by which Issuer or any of its Subsidiaries is bound; 

  

	(6)	Issuer must deliver to the trustee an officers’ certificate stating that the deposit was not made by Issuer with the intent of preferring the holders of notes over the other creditors of Issuer with the intent of
defeating, hindering, delaying or defrauding any creditors of Issuer or others; 

  

	(7)	Issuer must deliver to the trustee an officers’ certificate, stating that all conditions precedent relating to the Legal Defeasance or the Covenant Defeasance have been complied with; and 

 

	(8)	 Issuer must deliver to the trustee an opinion of counsel (which may be subject to customary assumptions,
qualifications and exclusions), stating that all conditions precedent set forth in clauses (2), (3) and (5) of this 

  
 A-29 

	 	
paragraph, as applicable, have been complied with; provided that the opinion of counsel with respect to clause (5) of this paragraph may be to the knowledge of such counsel.

 Amendment, Supplement and Waiver 

Except as provided in the next two succeeding paragraphs, the applicable indenture with respect to the notes of any series or the related Note
Guarantees of the notes of any series may be amended or supplemented with the consent of the holders of at least a majority in aggregate principal amount of the notes of such series then outstanding (including consents obtained in connection with a
purchase of, or tender offer or exchange offer for, notes of such series), and any existing Default or Event of Default or compliance with any provision of the applicable indenture with respect to such notes or Note Guarantees may be waived with the
consent of the holders of a majority in aggregate principal amount of the then outstanding notes of such series (including consents obtained in connection with a purchase of, or tender offer or exchange offer for, the notes of such series). 

Without the consent of each holder of notes of the applicable series affected, an amendment, supplement or waiver may not (with respect to any
notes of a particular series held by a non-consenting holder): 
  

	(1)	reduce the principal amount of notes of such series whose holders must consent to an amendment, supplement or waiver; 

  

	(2)	reduce the principal of or change the fixed maturity of any note of such series or alter the provisions with respect to the redemption of the notes of such series (other than provisions relating to the covenants
described above under the caption “—Repurchase at the Option of Holders”); 

  

	(3)	reduce the rate of or change the time for payment of interest on any note of such series; 

  

	(4)	waive a Default or Event of Default in the payment of principal of, or premium, if any, or interest on, the notes of such series (except a rescission of acceleration of the notes of such series by the holders of at
least a majority in aggregate principal amount of the then outstanding notes of such series and a waiver of the payment default that resulted from such acceleration); 

 

	(5)	make any note of such series payable in money other than that stated in the notes of such series; 

  

	(6)	make any change in the provisions of the indenture relating to waivers of past Defaults or the rights of holders of notes of such series to receive payments of principal of, or interest or premium, if any, on, the notes
of such series; 

  

	(7)	waive a redemption payment with respect to any note of such series (other than a payment required by one of the covenants described above under the caption “—Repurchase at the Option of Holders”);

  

	(8)	release any Guarantor from any of its obligations under its related Note Guarantee of the notes of such series or the applicable indenture, except in accordance with the terms of such indenture; or 

 

	(9)	make any change in the preceding amendment and waiver provisions. 

 Notwithstanding the
preceding, without the consent of any holder of notes, Issuer, the Guarantors and the trustee may amend or supplement the applicable indenture, the notes of any series or the related Note Guarantees: 

 

	(1)	to cure any ambiguity, defect or inconsistency; 

  

	(2)	to provide for uncertificated notes in addition to or in place of certificated notes; 

  

	(3)	to provide for the assumption of Issuer’s or a Guarantor’s obligations to holders of notes of such series and related Note Guarantees in the case of a merger or consolidation or sale of all or substantially
all of Issuer’s or such Guarantor’s assets, as applicable; 

  

	(4)	to effect the release of a Guarantor from its Note Guarantee in respect of such series notes and the termination of such Note Guarantee, all in accordance with the provisions of the applicable indenture governing such
release and termination; 

  
 A-30 

	(5)	to add any Guarantor or Note Guarantee with respect to such series or to secure the notes of such series or the related Note Guarantee; 

 

	(6)	to make any change that would provide any additional rights or benefits to the holders of notes of such series or that does not adversely affect the legal rights under the indenture of any such holder in any material
respect; 

  

	(7)	to comply with requirements of the SEC in order to effect or maintain the qualification of the indenture under the Trust Indenture Act; 

 

	(8)	to change or eliminate any of the provisions of the applicable indenture; provided that any such change or elimination shall not become effective with respect to any outstanding notes of any series created prior
to the execution of such supplemental indenture which is entitled to the benefit of such provision; 

  

	(9)	to provide for the issuance of and establish forms and terms and conditions of a new series of notes as permitted by the base indenture; 

 

	(10)	to conform the text of the applicable supplemental indenture, the notes of such series, or the related Note Guarantees to any provision of the “Description of Notes” section of this prospectus supplement to
the extent that such provision in such description of notes was intended to be a verbatim recitation of a provision of the applicable indenture, the applicable Note Guarantees, or the notes of such series, in each case, as conclusively evidenced by
an officers’ certificate; 

  

	(11)	to provide for the issuance of additional notes of such series, provided that such additional notes have the same terms as, and be deemed part of the same series as, the notes of such series to the extent
required under the applicable indenture; 

  

	(12)	to evidence and provide for the acceptance of and appointment by a successor trustee with respect to the notes of such series and to add to or change any of the provisions of the indenture as shall be necessary to
provide for or facilitate the administration of the trust by more than one trustee; and 

  

	(13)	to allow any Guarantor of the notes of such series to execute a supplemental indenture and/or a Note Guarantee with respect to the notes of such series. 

The consent of the holders of the notes is not necessary under the indenture to approve the particular form of any proposed amendment or
waiver. It is sufficient if such consent approves the substance of the proposed amendment or waiver. 
 Satisfaction and Discharge 

The applicable indenture will be discharged and will cease to be of further effect as to all notes, when: 

 

	(1)	either: 

  

	 	(a)	all notes of such series that have been authenticated, except lost, stolen or destroyed notes that have been replaced or paid and notes for whose payment money has been deposited in trust and thereafter repaid to
Issuer, have been delivered to the trustee for cancellation; or 

  

	 	(b)	 all notes of such series that have not been delivered to the trustee for cancellation have become due and payable
by reason of the sending of a notice of redemption or otherwise or will become due and payable within one year and Issuer or any Guarantor has irrevocably deposited or caused to be deposited with the trustee or its designee as trust funds in trust
solely for the benefit of the holders of such series of notes, cash in U.S. dollars, non-callable Government Securities, or a combination of cash in U.S. dollars and non-callable Government Securities, in such amounts as will be sufficient, without
consideration of any reinvestment of interest, to pay and discharge the entire Indebtedness on the notes of such series not delivered to the trustee for cancellation for principal of, and premium, if any, and accrued interest to the date of maturity
or redemption; provided that upon any redemption that requires 

  
 A-31 

	 	
the payment of the Applicable Premium, the amount deposited shall be sufficient for purposes of the indenture to the extent that an amount is deposited with the trustee equal to the Applicable
Premium calculated as of the date of the notice of redemption, with any deficit as of the date of the redemption only required to be deposited with the trustee on or prior to the date of the redemption; 

 

	(2)	Issuer or any Guarantor has paid or caused to be paid all sums payable by it under the indenture with respect to the notes of such series; and 

 

	(3)	Issuer has delivered irrevocable instructions to the trustee under the indenture to apply the deposited money toward the payment of the notes of such series at maturity or on the redemption date, as the case may be.

 In addition, Issuer must deliver to the trustee (a) an officers’ certificate, stating that all conditions
precedent set forth in clauses (1) through (3) above have been satisfied, and (b) an opinion of counsel(which opinion of counsel may be subject to customary assumptions, qualifications and exclusions), stating that all conditions
precedent set forth in clause (3) above have been satisfied. 
 Governing Law 

The indenture, the notes and the Note Guarantees will be governed by the laws of the State of New York. 

Concerning the Trustee 
 We maintain
ordinary banking relationships with Deutsche Bank Trust Company Americas and its affiliates. 
 If the trustee becomes a creditor of Issuer
or any Guarantor, the indenture limits the right of the trustee to obtain payment of claims in certain cases, or to realize on certain property received in respect of any such claim as security or otherwise. The trustee will be permitted to engage
in other transactions; however, if it acquires any conflicting interest when a Default is continuing it must eliminate such conflict within 90 days of the date such conflict arises, apply to the SEC for permission to continue as trustee (if the
indenture has been qualified under the Trust Indenture Act) or resign. 
 The holders of a majority in aggregate principal amount of the
then outstanding notes of the applicable series will have the right to direct the time, method and place of conducting any proceeding for exercising any remedy available to the trustee, subject to certain exceptions. The indenture provides that in
case an Event of Default occurs and is continuing, the trustee will be required, in the exercise of its power, to use the degree of care of a prudent man in the conduct of his own affairs. 

Subject to such provisions, the trustee will be under no obligation to exercise any of its rights or powers under the indenture at the request
of any holder of notes of the applicable series, unless such holder has offered to the trustee security and indemnity satisfactory to it against any loss, liability or expense. 

Certain Definitions 
 Set forth below are
certain defined terms used in the applicable indenture. Reference is made to the indenture for a full disclosure of all defined terms used therein, as well as any other capitalized terms used herein for which no definition is provided. 

“$1.75B Notes” means the $1,750,000,000 in principal amount of MetroPCS Wireless, Inc.’s 6.625% Senior Notes due 2023,
issued as of March 19, 2013, pursuant to the Indenture, between MetroPCS Wireless, Inc.’s, MetroPCS, Inc., MetroPCS Communications, Inc., the guarantors party thereto, and Deutsche Bank Trust Company Americas, as supplemented by the First
Supplemental Indenture dated March 19, 2013 or the Second Supplemental Indenture dated March 19, 2013 thereto, as applicable, as amended by the Third Supplemental Indenture dated April 29, 2013, as further supplemented by the Fourth
Supplemental Indenture dated May 1, 

  
 A-32 

 
2013, among T-Mobile USA, Inc., the guarantors party thereto and Deutsche Bank Trust Company Americas, as trustee, as further supplemented by the Fifth Supplemental Indenture, dated as of
July 15, 2013, among T-Mobile USA, Inc., the guarantors party thereto and Deutsche Bank Trust Company Americas, as trustee, and as further supplemented by the Sixth Supplemental Indenture, dated as of August 11, 2014, among T-Mobile USA,
Inc., the guarantors party thereto and Deutsche Bank Trust Company Americas, as trustee (as so supplemented and amended, the “$1.75B Notes Indenture”), (ii) any additional 6.625% Senior Notes due 2023 issued under the $1.75B
Notes Indenture as part of the same series, and (iii) any “Exchange Notes” (as defined in the $1.75B Notes Indenture) relating thereto. 

“Acquired Debt” means, with respect to any specified Person: 

 

	(1)	Indebtedness of any other Person existing at the time such other Person is merged with or into or became a Subsidiary of such specified Person, whether or not such Indebtedness is incurred in connection with, or in
contemplation of, such other Person merging with or into, or becoming a Restricted Subsidiary of, such specified Person; and 

  

	(2)	Indebtedness secured by a Lien encumbering any asset acquired by such specified Person. 

 The
term “Acquired Debt” does not include Indebtedness of a Person that is redeemed, defeased, retired or otherwise repaid at the time of, or immediately upon, consummation of the transactions by which such Person becomes a Restricted
Subsidiary or acquires such asset, as the case may be. 
 “Affiliate” of any specified Person means any other Person
directly or indirectly controlling or controlled by or under direct or indirect common control with such specified Person. For purposes of this definition, “control,” as used with respect to any Person, means the possession,
directly or indirectly, of the power to direct or cause the direction of the management or policies of such Person, whether through the ownership of voting securities, by agreement or otherwise. For purposes of this definition, the terms
“controlling,” “controlled by” and “under common control with” have correlative meanings. 

“Applicable Premium,” as calculated by Issuer and provided to the trustee, means, with respect to any note on any redemption
date, the greater of: 
  

	(1)	1.0% of the principal amount of the note; or 

  

	(2)	the excess of: 

  

	 	(a)	the present value at such redemption date of (i) the redemption price of the note at February 1, 2021, in the case of the 2026 notes, and at February 1, 2023, in the case of the 2028 notes (such
redemption price in each case being set in the applicable table appearing above under the caption “—Optional Redemption”), plus (ii) all required interest payments due on the note through February 1, 2021, in the case of the
2026 notes, and February 1, 2023, in the case of the 2028 notes (excluding accrued but unpaid interest, if any, to the redemption date), computed using a discount rate equal to the Treasury Rate as of such redemption date plus 50 basis points;
over 

  

	 	(b)	the principal amount of the note, if greater. 

 “Asset Acquisition” means:

  

	(1)	an Investment by Issuer (or any predecessor thereto) or any of its Restricted Subsidiaries in any other Person pursuant to which such Person shall become a Restricted Subsidiary or shall be merged into or consolidated
with Issuer or any of its Restricted Subsidiaries, or 

  

	(2)	an acquisition by Issuer (or any predecessor thereto) or any of its Restricted Subsidiaries of the property and assets of any Person, other than Issuer or any of its Restricted Subsidiaries, that constitute all or
substantially all of a division, operating unit or line of business of such Person. 

 For the avoidance of doubt, the Merger
shall be deemed to be an Asset Acquisition. 

  
 A-33 

 “Asset Disposition” means the sale or other disposition by Issuer or any of its
Restricted Subsidiaries other than to Issuer or another Restricted Subsidiary of (1) all or substantially all of the Capital Stock owned by Issuer or any of its Restricted Subsidiaries of any Restricted Subsidiary or any Person that is a
Permitted Joint Venture Investment or (2) all or substantially all of the assets that constitute a division, operating unit or line of business of Issuer or any of its Restricted Subsidiaries. 

“Asset Sale” means: 
  

	(1)	the sale, lease, conveyance or other disposition of any assets or rights; provided that the sale, lease, conveyance or other disposition of all or substantially all of the assets of Issuer and its Restricted
Subsidiaries taken as a whole will be governed by the provisions of the indenture described above under the caption “—Repurchase at the Option of Holders—Change of Control Triggering Event” and/or the provisions described above
under the caption “—Certain Covenants—Merger, Consolidation or Sale of Assets” and not by the provisions of the covenant described above under the caption “—Repurchase at the Option of Holders—Asset Sales”;
and 

  

	(2)	the issuance of Equity Interests in any of Issuer’s Restricted Subsidiaries or the sale by Issuer or any Restricted Subsidiary thereof of Equity Interests in any of its Restricted Subsidiaries. 

Notwithstanding the preceding, none of the following items will be deemed to be an Asset Sale: 

 

	(1)	any single transaction or series of related transactions that involves assets having a Fair Market Value of less than $100.0 million; 

 

	(2)	a sale, lease, conveyance or other disposition of assets or Equity Interests between or among Issuer and/or its Restricted Subsidiaries; 

 

	(3)	an issuance or sale of Equity Interests by a Restricted Subsidiary of Issuer to Issuer or to a Restricted Subsidiary of Issuer; 

  

	(4)	the sale, lease, sub-lease, conveyance or other disposition of (a) assets, products, services or accounts receivable in the ordinary course of business, (b) equipment or other assets pursuant to a program for
the maintenance or upgrading of such equipment or assets, or (c) any sale, conveyance or other disposition of damaged, worn-out, uneconomic or obsolete assets in the ordinary course of business; 

 

	(5)	the sale, conveyance or other disposition of cash or Cash Equivalents; 

  

	(6)	a surrender or waiver of contract rights or settlement, release or surrender of contract, tort or other claims in the ordinary course of business or a grant of a Lien not prohibited by the indenture; 

 

	(7)	a Restricted Payment that does not violate the covenant described above under the caption “—Certain Covenants—Restricted Payments”; 

 

	(8)	arms-length sales, leases or sub-leases (as lessor or sublessor), sale and leasebacks, assignments, conveyances, transfers or other dispositions of assets or rights to a Person that is a Permitted Joint Venture
Investment; 

  

	(9)	licenses and sales of intellectual property or other general intangibles (other than FCC Licenses) in the ordinary course of business; 

 

	(10)	a Permitted Investment; 

  

	(11)	dispositions of assets to the ISIS Joint Venture; 

  

	(12)	one or more sales, conveyances, leases, subleases, licenses, contributions, or other dispositions, assignments or transfers made as part of, or in connection with, the Towers Transaction; 

 

	(13)	the settlement or early termination of any Permitted Bond Hedge Transaction; or 

  

	(14)	any issuance, disposition or sale of Equity Interests in, or Indebtedness, assets or other securities of, an Unrestricted Subsidiary. 

  
 A-34 

 “Asset Sale Offer” has the meaning assigned to that term in the provision
described under the caption “—Repurchase at the Option of Holders—Asset Sales.” 
 “Bankruptcy Law”
means Title 11, U.S. Code or any similar federal or state law for the relief of debtors. 
 “Beneficial Owner” has the
meaning assigned to such term in Rule 13d-3 and Rule 13d-5 under the Exchange Act, except that (a) in calculating the beneficial ownership of any particular “person” (as that term is used in Section 13(d)(3) of the Exchange Act),
such “person” will be deemed to have beneficial ownership of all securities that such “person” has the right to acquire by conversion or exercise of other securities, whether such right is currently exercisable or is exercisable
only after the passage of time and (b) in the case of a “group” pursuant to Rule 13d-5 (b)(1) of the Exchange Act which group includes one or more Permitted Holders (or one or more Permitted Holders is deemed to share Beneficial
Ownership with one or more other persons of any shares of Capital Stock), (i) such “group” shall be deemed not to have Beneficial Ownership of any shares held by such Permitted Holder and (ii) any person (other than such
Permitted Holder) that is a member of such group (or sharing such Beneficial Ownership) shall be deemed not to have Beneficial Ownership of any shares held by such Permitted Holder (or in which any such Person shares beneficial ownership). The terms
“Beneficially Owns” and “Beneficially Owned” have a corresponding meaning. 
 “Board of Directors”
means: 
  

	(1)	with respect to a corporation, the board of directors of the corporation or any committee thereof duly authorized to act on behalf of such board; 

 

	(2)	with respect to a partnership, the Board of Directors of the general partner of the partnership; 

  

	(3)	with respect to a limited liability company, the managing member or members or any controlling committee of managing members thereof; and 

 

	(4)	with respect to any other Person, the board or committee of such Person serving a similar function. 

“Business Combination Agreement” means that certain Business Combination Agreement, dated as of October 3, 2012, as
amended from time to time, by and among Deutsche Telekom AG, T-Mobile Global Zwischenholding GmbH, T-Mobile Global Holding GmbH, Issuer and MetroPCS Communications, Inc. 

“Business Day” means any day except a Saturday, Sunday, or a legal holiday in the City of New York or in any place of payment
with respect to the Notes on which banking institutions are authorized or required by law, regulation or executive order to close. 

“Capital Lease Obligation” means, at the time any determination is to be made, the amount of the liability in respect of a
capital lease that would at that time be required to be capitalized on a balance sheet prepared in accordance with GAAP, and the Stated Maturity thereof shall be the date of the last payment of rent or any other amount due under such lease prior to
the first date upon which such lease may be prepaid by the lessee without payment of a penalty (provided that obligations either existing on the Issue Date or created thereafter that (a) initially were not included on the consolidated
balance sheet of Issuer as capital lease obligations and were subsequently recharacterized as capital lease obligations or (b) did not exist on the Issue Date and were required to be characterized as capital lease obligations but would not have
been required to be treated as capital lease obligations on the Issue Date had they existed at that time, shall for all purposes not be treated as Capital Lease Obligations or Indebtedness). 

“Capital Stock” means: 
  

	(1)	in the case of a corporation, corporate stock; 

  

	(2)	in the case of an association or business entity, any and all shares, interests, participations, rights or other equivalents (however designated) of corporate stock; 

  
 A-35 

	(3)	in the case of a partnership or limited liability company, partnership interests (whether general or limited) or membership interests, respectively; and 

 

	(4)	any other interest or participation that confers on a Person the right to receive a share of the profits and losses of, or distributions of assets of, the issuing Person, but excluding from all of the foregoing any debt
securities convertible into Capital Stock, whether or not such debt securities include any right of participation with Capital Stock. 

“Cash Equivalents” means: 
  

	(1)	United States dollars, pounds sterling, euros, the national currency of any member state of the European Union or any other foreign currencies held by Issuer and its Restricted Subsidiaries from time to time in the
ordinary course of business; 

  

	(2)	securities issued or directly and fully guaranteed or insured by the government of the United States of America, the United Kingdom or any country that is a member state of the European Union or any agency or
instrumentality thereof (provided that the full faith and credit of the United States of America, the United Kingdom or the relevant member state of the European Union, as the case may be, is pledged in support of those securities) having
maturities of not more than two years from the date of acquisition; 

  

	(3)	demand deposits, certificates of deposit and eurodollar time deposits with maturities of six months or less from the date of acquisition, bankers’ acceptances with maturities not exceeding one year and overnight
bank deposits, in each case, with any domestic commercial bank having capital and surplus in excess of $500.0 million and a Thomson Bank Watch Rating of “B” or better; 

 

	(4)	repurchase obligations with a term of not more than seven days for underlying securities of the types described in clauses (2) and (3) above entered into with any financial institution meeting the
qualifications specified in clause (3) above; 

  

	(5)	commercial paper having one of the two highest ratings obtainable from a Rating Agency at the date of acquisition and, in each case, maturing within one year after the date of acquisition; 

 

	(6)	securities issued and fully guaranteed by any state, commonwealth or territory of the United States, or by any political subdivision or agency or instrumentality thereof, rated at least “A” by a Rating Agency
at the date of acquisition and having maturities of not more than two years after the date of acquisition; 

  

	(7)	auction rate securities rated at least “AA-” or “Aa3” by a Rating Agency at the time of purchase and with reset dates of one year or less from the time of purchase; 

 

	(8)	investments, classified in accordance with GAAP as current assets of Issuer or any of its Restricted Subsidiaries, in money market funds, mutual funds or investment programs registered under the Investment Company Act
of 1940, at least 90% of the portfolios of which constitute investments of the character, quality and maturity described in clauses (1) through (7) of this definition; 

 

	(9)	any substantially similar investment to the kinds described in clauses (1) through (7) of this definition rated at least “P-2” by Moody’s or “A-2” by S&P or the equivalent thereof;
and 

  

	(10)	deposits or payments made to the FCC in connection with the auction or licensing of Governmental Authorizations that are fully refundable. 

“Change of Control” means the occurrence of any of the following: 

 

	(1)	the direct or indirect sale, lease, transfer, conveyance or other disposition (other than by way of merger or consolidation), in one or a series of related transactions, of all or substantially all of the properties or
assets of Issuer and its Restricted Subsidiaries taken as a whole to any “person” (as that term is used in Section 13(d) of the Exchange Act) other than any such disposition to a Restricted Subsidiary or a Permitted Holder;

  

	(2)	the adoption of a plan relating to the liquidation or dissolution of Issuer; 

  
 A-36 

	(3)	the consummation of any transaction (including any merger or consolidation), the result of which is that any “person” (as defined above), other than a Permitted Holder, becomes the Beneficial Owner, directly
or indirectly, of more than 50% of the Voting Stock of Parent (or its successor by merger, consolidation or purchase of all or substantially all of its assets or its equity), measured by voting power rather than number of shares; or

  

	(4)	Issuer ceases to be a direct or indirect Wholly-Owned Subsidiary of Parent. 

 provided that the
Transactions and other transactions pursuant to the Business Combination Agreement (including the changes to the Beneficial Ownership of the Voting Stock of Parent contemplated therein) shall not be a Change of Control. 

“Change of Control Triggering Event” means, with respect to any series of notes, the occurrence of a Change of Control
(x) that is accompanied or followed by a downgrade by one or more gradations (including gradations within ratings categories as well as between ratings categories) or withdrawal of the rating of such series of notes within the Ratings Decline
Period by at least two out of the three Rating Agencies and (y) the rating of such series of notes on any day during such Ratings Decline Period is below the rating by each such Rating Agency in effect immediately preceding the first public
announcement of the Change of Control (or occurrence thereof if such Change of Control occurs prior to public announcement), provided that in making the relevant decision(s) referred to above to downgrade or withdraw such ratings, as
applicable, the relevant Rating Agency announces publicly or confirms in writing during such Ratings Decline Period that such decision(s) resulted, in whole or in part, from the occurrence (or expected occurrence) of such Change of Control or the
announcement of the intention to effect such Change of Control; provided, further, that no Change of Control Triggering Event shall be deemed to occur if at the time of the applicable downgrade the rating of such series of notes by at
least two out of the three Rating Agencies is Investment Grade. 
 “Closing Date” means the date on which the Merger was
consummated, or May 1, 2013. 
 “Consolidated Cash Flow” means, with respect to any specified Person for any period,
the Consolidated Net Income of such Person for such period plus, without duplication: 
  

	(1)	provision for taxes based on income or profits of such Person and its Restricted Subsidiaries for such period, to the extent that such provision for taxes was deducted in computing such Consolidated Net Income;
plus 

  

	(2)	the Consolidated Interest Expense of such Person and its Restricted Subsidiaries for such period, to the extent that such Consolidated Interest Expense was deducted in computing such Consolidated Net Income; plus

  

	(3)	depreciation, amortization (including non-cash impairment charges and any write-off or write-down or amortization of intangibles but excluding amortization of ordinary course prepaid cash expenses that were paid in a
prior period) and other non-cash expenses or charges (excluding any such non-cash expense to the extent that it represents an ordinary course accrual of or reserve for cash expenses in any future period or amortization of any ordinary course prepaid
cash expense that was paid in a prior period) of such Person and its Restricted Subsidiaries for such period to the extent that such depreciation, amortization and other non-cash expenses or charges were deducted in computing such Consolidated Net
Income; plus 

  

	(4)	 any nonrecurring or unusual gains or losses or income, expenses or charges (including all fees and expenses
relating thereto), including (a) any fees, expenses and costs relating to the Towers Transaction, (b) any fees, expenses or charges related to any sale or offering of Equity Interests of such Person or Parent, any acquisition or
disposition or any Indebtedness, in each case that is permitted to be incurred hereunder (in each case, whether or not successful), or the offering, amendment or modification of any debt instrument, including the offering, any amendment or other
modification of the notes, provided that Consolidated Cash Flow shall not be deemed to be increased by more than $250.0 million in any twelve-month period pursuant to this clause (b), (c) any premium, penalty or fee paid in relation to
any repayment, prepayment or 

  
 A-37 

	 	
repurchase of Indebtedness, (d) any fees or expenses relating to the Transactions and the offering, issuance and sale (in each case, whether or not successful) of the DT Notes and any
“Exchange Notes” (as defined in the base indenture) issued in respect thereof and the Permitted MetroPCS Notes and any “Exchange Notes” (as defined in the $1.75B Notes Indenture), and (e) restructuring charges, integration
costs (including retention, relocation and contract termination costs) and related costs and charges; plus 

  

	(5)	New Market Losses; minus 

  

	(6)	non-cash items increasing such Consolidated Net Income for such period, other than the accrual of revenue in the ordinary course of business, in each case, on a consolidated basis and determined in accordance with GAAP.

 Notwithstanding the preceding, the provision for taxes based on the income or profits of, and the depreciation and
amortization and other non-cash expenses of, a Restricted Subsidiary of Issuer that is not a Subsidiary Guarantor will be added to Consolidated Net Income to compute Consolidated Cash Flow of Issuer only to the extent that a corresponding amount
would be permitted at the date of determination to be dividended to Issuer by such Restricted Subsidiary without prior governmental approval (that has not been obtained), and without direct or indirect restriction pursuant to the terms of its
charter and all agreements, instruments, judgments, decrees, orders, statutes, rules and governmental regulations applicable to that Restricted Subsidiary or its stockholders. 

For the avoidance of doubt, calculations of “Consolidated Cash Flow” of Issuer for any period prior to the Closing Date for purposes
of calculating the Debt to Cash Flow Ratio shall be on a pro forma basis as described in the last paragraph of the definition of “Debt to Cash Flow Ratio.” 

“Consolidated Indebtedness” means, with respect to any Person as of any date of determination, the sum, without duplication,
of (i) the total amount of Indebtedness of such Person and its Restricted Subsidiaries, plus (ii) the total amount of Indebtedness of any other Person, to the extent that such Indebtedness has been Guaranteed by the referent Person or one
or more of its Restricted Subsidiaries, plus (iii) the aggregate liquidation value of all Disqualified Stock of such Person and all Preferred Stock of Subsidiaries of such Person, in each case, determined on a consolidated basis in accordance
with GAAP. 
 “Consolidated Interest Expense” means, with respect to any Person for any period, the sum of, without
duplication: 
  

	(1)	the consolidated interest expense of such Person and its Subsidiaries for such period, whether paid or accrued (including amortization of debt issuance costs or original issue discount, non-cash interest payments, the
interest component of any deferred payment obligations, the interest component of all payments associated with Capital Lease Obligations, commissions, discounts and other fees and charges incurred in respect of letter of credit or bankers’
acceptance financings, and net of payments (if any) pursuant to Hedging Obligations); plus 

  

	(2)	the consolidated interest expense of such Person and its Restricted Subsidiaries that was capitalized during such period; plus 

 

	(3)	any interest expense on that portion of Indebtedness of another Person that is guaranteed by such Person or one of its Restricted Subsidiaries or secured by a Lien on assets of such Person or one of its Restricted
Subsidiaries (whether or not such Guarantee or Lien is called upon); plus 

  

	(4)	the product of (a) all dividend payments on any series of Preferred Stock of such Person or any of its Restricted Subsidiaries; times (b) a fraction, the numerator of which is one and the denominator of which
is one minus the then current combined federal, state and local statutory tax rate of such Person, expressed as a decimal; 

 in each case, on
a consolidated basis and in accordance with GAAP; excluding, however, any amount of such interest of any Restricted Subsidiary of the referent Person if the net income of such Restricted Subsidiary is

  
 A-38 

 
excluded in the calculation of Consolidated Net Income pursuant to clause (2) of the definition thereof (but only in the same proportion as the net income of such Restricted Subsidiary is
excluded from the calculation of Consolidated Net Income pursuant to clause (2) of the definition thereof). Notwithstanding the foregoing, if any lease or other liability is reclassified as indebtedness or as a Capital Lease Obligation due to a
change in accounting principles or the application thereof after the Closing Date, the interest component of all payments associated with such lease or other liability shall be excluded from Consolidated Interest Expense. 

“Consolidated Net Income” means, with respect to any specified Person for any period, the aggregate of the Net Income of such
Person and its Restricted Subsidiaries for such period, on a consolidated basis, determined in accordance with GAAP; provided that: 
  

	(1)	the positive Net Income of any Person that is not a Restricted Subsidiary or that is accounted for by the equity method of accounting will be included only to the extent of the amount of dividends or similar
distributions paid in cash to the specified Person or a Restricted Subsidiary of the Person; 

  

	(2)	solely for the purpose of determining the amount available for Restricted Payments under clause 3(A) of the second paragraph of the covenant described above under the caption “—Certain
Covenants—Restricted Payments” the Net Income of any Restricted Subsidiary that is not a Guarantor will be excluded to the extent that the declaration or payment of dividends or similar distributions by that Restricted Subsidiary of that
Net Income is not at the date of determination permitted without any prior governmental approval (that has not been obtained) or, directly or indirectly, by operation of the terms of its charter or any agreement, instrument, judgment, decree, order,
statute, rule or governmental regulation applicable to that Restricted Subsidiary or its stockholders; 

  

	(3)	the effect of a change in accounting principles or in the application thereof (including any change to IFRS and any cumulative effect adjustment) will be excluded; 

 

	(4)	unrealized losses and gains attributable to Hedging Obligations, including those resulting from the application of the Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) 815, will be
excluded; and 

  

	(5)	any non-cash compensation charge or expense realized from grants of stock, stock appreciation or similar rights, stock option or other rights to officers, directors and employees, will be excluded. 

“Contribution Indebtedness” means, Indebtedness in an aggregate principal amount at any one time outstanding, including all
Permitted Refinancing Indebtedness incurred to renew, refund, refinance, replace, defease or discharge such Indebtedness, not to exceed 150% of the aggregate amount of all Net Equity Proceeds. 

“Convertible Debt” means Debt of Issuer (which may be Guaranteed by the Guarantors) permitted to be incurred hereunder that
is either (a) convertible or exchangeable into common stock of Parent (and cash in lieu of fractional shares) and/or cash (in an amount determined by reference to the price of such common stock) or (b) sold as units with call options,
warrants or rights to purchase (or substantially equivalent derivative transactions) that are exercisable for common stock of Parent and/or cash (in an amount determined by reference to the price of such common stock). 

“Corporate Trust Office of the Trustee” means, solely for purposes of presenting the notes, Deutsche Bank Trust Company
Americas located at 60 Wall Street, New York, NY 10005, and, for all other purposes, the office of the trustee at which any time its corporate trust business will be administered, which at the date hereof is located at 60 Wall Street, New York, NY
10005, or such other address as the trustee may designate from time to time by notice to the holders and Issuer, or the principal corporate trust office of any successor trustee (or such other address as such successor trustee may designate from
time to time by notice to the holders and Issuer). 
 “Credit Facilities” means, one or more debt facilities (including the
Revolving Credit Facilities and any additional notes issued pursuant to a Senior Notes Election thereunder and the Term Loan Credit Agreement), 

  
 A-39 

 
capital leases, purchase money financings or commercial paper facilities, providing for revolving credit loans, term loans, receivables financing (including through the sale of receivables to
such lenders or to special purpose entities formed to borrow from such lenders against such receivables), capital leases, purchase money debt, debt securities or letters of credit, in each case, as amended, restated, modified, renewed, refunded,
replaced (whether upon or after termination or otherwise) or refinanced (including, in each case, by means of sales of debt securities to institutional investors) in whole or in part from time to time. 

“Debt to Cash Flow Ratio” means, with respect to any Person as of any date of determination, the ratio of (a) the
Consolidated Indebtedness of such Person as of such date, less cash and Cash Equivalents, to (b) the Consolidated Cash Flow of such Person for the four most recent full fiscal quarters ending immediately prior to such date for which internal
financial statements are available. 
 For purposes of making the computation referred to above: 

 

	(1)	pro forma effect shall be given to Asset Dispositions and Asset Acquisitions (including the Merger and including giving pro forma effect to any related financing transactions and the application of proceeds of any Asset
Disposition) that occur during such four-quarter period or subsequent to such four quarter period but on or prior to the date on which the Debt to Cash Flow Ratio is to be calculated as if they had occurred and such proceeds had been applied on the
first day of such four-quarter period; 

  

	(2)	pro forma effect shall be given to asset dispositions and, asset acquisitions (including giving pro forma effect to any related financing transactions and the application of proceeds of any asset disposition) that have
been made by any Person that has become a Restricted Subsidiary of Issuer or has been merged with or into Issuer (including MetroPCS Wireless, Inc.) or any Restricted Subsidiary during such four-quarter period or subsequent to such four quarter
period but on or prior to the date on which the Debt to Cash Flow Ratio is to be calculated and that would have constituted Asset Dispositions or Asset Acquisitions had such transactions occurred when such Person was a Restricted Subsidiary, as if
such asset dispositions or asset acquisitions were Asset Dispositions or Asset Acquisitions that occurred on the first day of such four-quarter period; 

  

	(3)	to the extent that the pro forma effect of any transaction is to be made pursuant to clause (1) or (2) above, such pro forma effect shall be determined in good faith on a reasonable basis by a responsible
financial or accounting officer of the specified Person, whose determination shall be conclusive, as if the subject transaction(s) had occurred on the first day of the four-quarter reference period and Consolidated Cash Flow for such reference
period shall be calculated without giving effect to clause (3) of the proviso set forth in the definition of Consolidated Net Income; 

  

	(4)	the Consolidated Cash Flow attributable to discontinued operations, as determined in accordance with GAAP, and operations or businesses disposed of (without duplication of clauses (1) and (2) above) prior to
the date on which the Debt to Cash Flow Ratio is to be calculated, shall be excluded; 

  

	(5)	any Person that is a Restricted Subsidiary on the date on which the Debt to Cash Flow Ratio is to be calculated will be deemed to have been a Restricted Subsidiary at all times during such four-quarter period; and

  

	(6)	any Person that is not a Restricted Subsidiary on the date on which the Debt to Cash Flow Ratio is to be calculated will be deemed not to have been a Restricted Subsidiary at any time during such four-quarter period.

 For the avoidance of doubt, if the Debt to Cash Flow Ratio is determined for any period commencing prior to the date that
is four fiscal quarters after the fiscal quarter during which the Closing Date occurs, the Debt to Cash Flow Ratio shall be calculated giving pro forma effect to the Transactions as if the Transactions had occurred on the first day of the four
quarter reference period. 

  
 A-40 

 “December 2012 Sixth Supplemental Indenture” means the Sixth Supplemental
Indenture, dated as of December 14, 2012, among MetroPCS Wireless, Inc., the guarantors party thereto and Wells Fargo Bank, N.A., as trustee, to the September 2010 Senior Notes Indenture. 

“Default” means any event that is, or with the passage of time or the giving of notice or both would be, an Event of Default.

 “Designated Entity” means (i) Iowa Wireless Services LLC, a Delaware limited liability company, or (ii) any
Designated Tower Entity. 
 “Designated Non-cash Consideration” means the Fair Market Value (as determined in good faith by
issuer) of non-cash consideration received by Issuer or a Restricted Subsidiary in connection with an Asset Sale that is so designated as Designated Non-cash Consideration pursuant to an officers’ certificate, setting forth such valuation, less
the amount of cash and Cash Equivalents received in connection with a subsequent sale of, or other receipt of cash and Cash Equivalents in respect of, such Designated Non-cash Consideration. 

“Designated Tower Entity” means any entity established solely or primarily for the limited purpose of holding wireless
communications sites, towers, and related contracts, equipment, improvements, real estate, and other assets, and performing other activities incidental thereto or in connection with the Towers Transaction. For the avoidance of doubt, T-Mobile USA
Tower LLC and T-Mobile West Tower LLC are each Designated Tower Entities. 
 “Disqualified Stock” means, with respect to
notes of any series, any Capital Stock that, by its terms (or by the terms of any security into which it is convertible, or for which it is exchangeable, in each case, at the option of the holder of the Capital Stock), or upon the happening of any
event, matures or is mandatorily redeemable, pursuant to a sinking fund obligation or otherwise, or redeemable at the option of the holder of the Capital Stock, in whole or in part, on or prior to the date that is 91 days after the date on which the
notes of the applicable series mature; provided that any class of Capital Stock of such Person that, by its terms, requires such Person to satisfy in full its obligations with respect to the payment of dividends or upon maturity, redemption
(pursuant to a sinking fund or otherwise) or repurchase thereof or otherwise by the delivery of Capital Stock, and that is not convertible, puttable or exchangeable for cash, Disqualified Stock or Indebtedness, will not be deemed to be Disqualified
Stock, so long as such Person satisfies its obligations with respect thereto solely by the delivery of Capital Stock. Notwithstanding the preceding sentence, any Capital Stock that would constitute Disqualified Stock solely because the holders of
the Capital Stock have the right to require Issuer to repurchase such Capital Stock upon the occurrence of a change of control or an asset sale will not constitute Disqualified Stock if the terms of such Capital Stock provide that Issuer may not
repurchase or redeem any such Capital Stock pursuant to such provisions unless such repurchase or redemption complies with the covenant described above under the caption “—Certain Covenants—Restricted Payments.” The amount of
Disqualified Stock deemed to be outstanding at any time for purposes of the indenture will be the maximum amount that Issuer and its Restricted Subsidiaries may become obligated to pay upon the maturity of, or pursuant to any mandatory redemption
provisions of, such Disqualified Stock, exclusive of accrued dividends. 
 “Domestic Restricted Subsidiary” means any
Restricted Subsidiary that is not a Foreign Subsidiary. 
 “DT” means Deutsche Telekom AG, an Aktiengesellschaft organized
and existing under the laws of the Federal Republic of Germany. 
 “DT Notes” shall have the meaning assigned to such term
in the Business Combination Agreement. 
 “Equity Interests” means Capital Stock and all warrants, options or other rights
to acquire Capital Stock (but excluding any debt security that is convertible into, or exchangeable for, Capital Stock). 

  
 A-41 

 “Existing Indebtedness” means (a) Indebtedness of Issuer and its
Subsidiaries (other than Indebtedness in respect of the DT Notes) in existence on the Closing Date, until such amounts are repaid, (b) (1) the $1.75B Notes in existence on the Closing Date (and any “Exchange Notes” (as
defined in the $1.75B Notes Indenture) relating thereto), and (2) all other Indebtedness of MetroPCS Wireless, Inc. and its Subsidiaries in existence on the Closing Date that was not incurred in violation of the terms of the Business
Combination Agreement, in each case until such amounts are repaid (provided that the aggregate principal amount of Indebtedness incurred in contemplation of the Transactions, including any Indebtedness in the form of the $1.75B Notes and
notes issued on the date of the base indenture, in each case permitted by this clause (b), shall not exceed $20.5 billion). 

“Existing Senior Notes” means (i) the $1.75B Notes existing on the Closing Date, (ii) the DT Notes existing on the
Closing Date, (iii) the 6.000% Senior Notes due 2023 issued pursuant to the base indenture, as supplemented by that certain Seventeenth Supplemental Indenture dated as of September 5, 2014, among T-Mobile USA, Inc., the guarantors named
therein and Deutsche Bank Trust Company Americas, as trustee, (iv) the 6.500% Senior Notes due 2024 issued pursuant to the base indenture, as supplemented by that certain Fifteenth Supplemental Indenture dated as of November 21, 2013,
among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee, (v) the 6.375% Senior Notes due 2025 issued pursuant to the base indenture, as supplemented by that certain Eighteenth Supplemental
Indenture dated as of September 5, 2014, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee, (vi) the 6.500% Senior Notes due 2026 issued
pursuant to the base indenture, as supplemented by that certain Twentieth Supplemental Indenture dated as of November 5, 2015, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee,
(vii) the 6.000% Senior Notes due 2024 issued pursuant to the base indenture, as supplemented by that certain Twenty-First Supplemental Indenture dated as of April 1, 2016, among T-Mobile USA, Inc., the guarantors named therein and
Deutsche Bank Trust Company Americas, as trustee, (viii) the 4.000% Senior Notes due 2022 issued pursuant to the base indenture, as supplemented by that certain Twenty-Third Supplemental Indenture dated as of March 16, 2017, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee, (ix) the 5.125% Senior Notes due 2025 issued pursuant to the base indenture, as supplemented by that
certain Twenty-Fourth Supplemental Indenture dated as of March 16, 2017, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee, (x) the 5.375% Senior Notes due 2027 issued pursuant to
the base indenture, as supplemented by that certain Twenty-Fifth Supplemental Indenture dated as of March 16, 2017, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee, (xi) the
4.000% Senior Notes due 2022-1 issued pursuant to the base indenture, as supplemented by that certain Twenty-Sixth Supplemental Indenture dated as of April 27, 2017, among T-Mobile USA, Inc., the
guarantors named therein and Deutsche Bank Trust Company Americas, as trustee, (xii) the 5.125%% Senior Notes due 2025-1 issued pursuant to the base indenture, as supplemented by that certain Twenty-Seventh Supplemental Indenture dated as of
April 28, 2017, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee, (xiii) the 5.375% Senior Notes due 2027-1 issued pursuant to the base indenture, as supplemented by that certain
Twenty-Eighth Supplemental Indenture dated as of April 28, 2017, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee, (xiv) the 5.300% Senior Notes due 2021 issued pursuant to the
base indenture, as supplemented by that certain Twenty-Ninth Supplemental Indenture dated as of May 9, 2017, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company Americas, as trustee and (xv) the 6.000%
Senior Notes due 2024 issued pursuant to the base indenture, as supplemented by that certain Thirtieth Supplemental Indenture dated as of May 9, 2017, among T-Mobile USA, Inc., the guarantors named therein and Deutsche Bank Trust Company
Americas, as trustee. 
 “Fair Market Value” means the value that would be paid by a willing buyer to an unaffiliated
willing seller in a transaction not involving distress or necessity of either party, determined in good faith by Issuer’s Board of Directors or a senior officer of Issuer, which determination shall be conclusive. 

  
 A-42 

 “FCC” means the United States Federal Communications Commission and any
successor agency that is responsible for regulating the United States telecommunications industry. 
 “FCC Licenses” means
all licenses or permits now or hereafter issued by the FCC. 
 “Fitch” means Fitch Inc. and its successors. 

“Foreign Subsidiary” means any Subsidiary of Issuer other than a Subsidiary organized under the laws of the United States or
any state of the United States or the District of Columbia, or any direct or indirect Subsidiary thereof. 
 “GAAP” means
generally accepted accounting principles as in effect on the date of any calculation or determination required under the notes or the indenture. Notwithstanding the foregoing, at any time, (i) Issuer may elect to apply IFRS accounting
principles in lieu of GAAP and, upon any such election, references herein to GAAP or parts of the Accounting Standards Codification or “ASC” shall thereafter be construed to mean IFRS (except as otherwise provided in the indenture);
provided that any such election, once made, shall be irrevocable; provided, further, that any calculation or determination in the indenture that requires the application of GAAP for periods that include fiscal quarters ended
prior to Issuer’s election to apply IFRS shall remain as previously calculated or determined in accordance with GAAP and (ii) Issuer, on any date, may elect to establish that GAAP shall mean GAAP as in effect on such date; provided
that any such election, once made, shall be irrevocable. Issuer shall give notice of any such election made in accordance with this definition to the trustee and the holders of notes. 

“Government Securities” means direct obligations (or certificates representing an ownership interest in such obligations) of
the United States of America (including any agency or instrumentality thereof) for the payment of which the full faith and credit of the United States of America is pledged and which are not callable or redeemable at the issuer’s option. 

“Governmental Authorization” means any permit, license, authorization, plan, directive, consent, permission, consent order or
consent decree of or from any governmental authority. 
 “Guarantee” means a guarantee other than by endorsement of
negotiable instruments for collection in the ordinary course of business, direct or indirect, in any manner including by way of a pledge of assets or through letters of credit or reimbursement agreements in respect thereof, of all or any part of any
Indebtedness (whether arising by virtue of partnership arrangements, or by agreements to keep-well, to purchase assets, goods, securities or services, to take or pay or to maintain financial statement conditions or otherwise). 

“Guarantor” means, with respect to the notes of any series, any Person who has guaranteed the obligations of Issuer under the
applicable indenture until released from its Note Guarantee pursuant to the provisions of the applicable indenture. 
 “Hedging
Obligations” means, with respect to any specified Person, the obligations of such Person under: 
  

	(1)	interest rate swap agreements (whether from fixed to floating or from floating to fixed), interest rate cap agreements and interest rate collar agreements; 

 

	(2)	other agreements or arrangements designed to manage interest rates or interest rate risk; and 

  

	(3)	other agreements or arrangements designed to protect such Person against fluctuations in currency exchange rates or commodity prices, 

and any guarantee in respect thereof. 

“IFRS” means the international accounting standards promulgated by the International Accounting Standards Board and its
predecessors, as adopted by the European Union, as in effect from time to time. 

  
 S-43 

 “Immaterial Subsidiary” means any Subsidiary of Issuer that at any time has less
than the greater of (x) $250.0 million in Total Assets or (y) Total Assets accounting for 0.33% of Issuer’s Total Assets; provided that the aggregate Total Assets of all Immaterial Subsidiaries shall not at any time exceed the
greater of (x) $750.0 million and (y) 1.00% of Issuer’s Total Assets. 
 “Incremental Term Loan Facility”
means the secured term loan facility entered into by Issuer pursuant to the Term Loan Credit Agreement, as amended by that certain First Incremental Facility Amendment, dated as of December 29, 2016, by and among Parent, Deutsche Bank AG New
York Branch, as administrative agent, the guarantors party thereto and DT, as the initial incremental term loan lender, and that certain Second Incremental Facility Amendment, dated as of January 25, 2017, by and among Parent, Deutsche Bank, AG
New York Branch, as administrative agent, the guarantors party thereto and DT. 
 “Indebtedness” means, with respect to any
specified Person, without duplication, 
  

	(1)	any indebtedness of such Person (excluding accrued expenses and trade payables), whether or not contingent: 

  

	 	(a)	in respect of borrowed money; 

  

	 	(b)	evidenced by bonds, notes, debentures or similar instruments or letters of credit (or reimbursement agreements in respect thereof); 

  

	 	(c)	in respect of banker’s acceptances; 

  

	 	(d)	representing Capital Lease Obligations; 

  

	 	(e)	representing the balance deferred and unpaid of the purchase price of any property or services due more than six months after such property is acquired or such services are completed; or 

 

	 	(f)	representing any Hedging Obligations; and 

  

	(2)	any financial liabilities recorded in respect of the upfront proceeds received in connection with the Towers Transaction, 

in each case, if and only to the extent any of the preceding items (other than letters of credit and Hedging Obligations) would appear as a
liability upon a balance sheet of the specified Person prepared in accordance with GAAP. In addition, the term “Indebtedness” includes all Indebtedness of others secured by a Lien on any asset of the specified Person (whether or not such
Indebtedness is assumed by the specified Person) and, to the extent not otherwise included, the Guarantee by the specified Person of any Indebtedness of any other Person. Notwithstanding the foregoing, in no event shall the reclassification of any
lease or other liability as indebtedness due to a change in accounting principles (or in the application thereof) after the Closing Date be deemed to be an incurrence of Indebtedness for any purpose under the indenture. The amount of any
Indebtedness shall be determined in accordance with the last paragraph of the covenant described above under the caption “—Certain Covenants—Incurrence of Indebtedness and Issuance of Disqualified Stock and Preferred Stock.” 

“Investments” means, with respect to any Person, all direct or indirect investments by such Person in other Persons
(including Affiliates) in the forms of loans (including Guarantees), advances (excluding commission, travel, entertainment, drawing accounts and similar advances to directors, officers and employees made in the ordinary course of business and
excluding the purchase of assets, equipment, property or accounts receivables created or acquired in the ordinary course of business) or capital contributions, and purchases or other acquisitions for consideration of Indebtedness, Equity Interests
or other securities. If Issuer or any Restricted Subsidiary of Issuer sells or otherwise disposes of any Capital Stock of any direct or indirect Restricted Subsidiary of Issuer such that, after giving effect to any such sale or disposition, such
Person is no longer a Restricted Subsidiary of Issuer, Issuer will be deemed to have made an Investment on the date of any such sale or disposition equal to the Fair Market Value of Issuer’s Investments in such Restricted Subsidiary that were
not sold or disposed of in an amount determined as provided in the final paragraph of the covenant described above 

  
 A-44 

 
under the caption “—Certain Covenants—Restricted Payments.” The acquisition by Issuer or any Subsidiary of Issuer of a Person that holds an Investment in a third Person will
be deemed to be an Investment by Issuer or such Subsidiary in such third Person in an amount equal to the Fair Market Value of the Investments held by the acquired Person in such third Person in an amount determined as provided in the final
paragraph of the covenant described above under the caption “—Certain Covenants—Restricted Payments” as of the date the acquisition of the acquired Person is consummated. Except as otherwise provided in the indenture, the amount
of an Investment will be determined at the time the Investment is made and without giving effect to subsequent changes in value. 

“Investment Grade” means 
  

	(1)	with respect to Moody’s (or any successor company acquiring all or substantially all of its assets), a rating of Baa3 (or its equivalent under any successor rating category of Moody’s) or better;

  

	(2)	with respect to S&P (or any successor company acquiring all or substantially all of its assets), a rating of BBB- (or its equivalent under any successor rating category of S&P) or better; 

 

	(3)	with respect to Fitch (or any successor company acquiring all or substantially all of its assets), a rating of BBB- (or its equivalent under any successor rating category of Fitch) or better; and 

 

	(4)	if any Rating Agency ceases to exist or ceases to rate the notes for reasons outside of the control of Issuer, the equivalent investment grade credit rating for the notes from any other “nationally recognized
statistical rating organization”, as such term is defined under Section 3(a)(62) of the Exchange Act, selected by Issuer as a replacement agency. 

“ISIS Joint Venture” means Amended and Restated LLC Agreement of JVL Ventures, LLC dated October 1, 2010, as amended.

 “Issue Date” means the effective date of the Board Resolution, officers’ certificate or supplemental indenture
pursuant to which the first series of DT Notes was issued under the base indenture, or April 28, 2013. 
 “January 2018 Notes
Redemption” means the redemption in full by Issuer of its then-outstanding 6.125% Senior Notes due 2022 that occurred on January 16, 2018. 

“Layer3 Entities” means Layer3 TV, Inc. and its subsidiaries. 

“Lien” means, with respect to any asset, any mortgage, lien, pledge, charge, security interest or encumbrance of any kind in
respect of such asset, whether or not filed, recorded or otherwise perfected under applicable law, including any conditional sale or other title retention agreement and any lease in the nature thereof. 

“Merger” means the merger of MetroPCS Wireless, Inc. with and into Issuer with Issuer as the surviving Person, pursuant to
the Business Combination Agreement. 
 “Moody’s” means Moody’s Investors Service, Inc., and its successors. 

“Net Equity Proceeds” means the net cash proceeds received by Issuer since the Closing Date as a contribution to its common
equity capital or from the issue or sale of Equity Interests of Issuer (other than Disqualified Stock). 
 “Net Income”
means, with respect to any specified Person, the net income (loss) of such Person, determined in accordance with GAAP and before any reduction in respect of Preferred Stock accretion or dividends, excluding, however: 

 

	(1)	any gain (or loss), together with any related provision for taxes on such gain (or loss) realized in connection with: (a) dispositions of assets (other than in the ordinary course of business); or (b) the
extinguishment of any Indebtedness of such Person or any of its Restricted Subsidiaries; and 

  
 A-45 

	(2)	any extraordinary gain (or loss), together with any related provision for taxes on such extraordinary gain (or loss). 

“Net Proceeds” means the aggregate cash proceeds received by Issuer or any of its Restricted Subsidiaries in respect of any
Asset Sale (including any cash received upon the sale or other disposition of any non-cash consideration received in any Asset Sale, but excluding any items deemed to be cash pursuant to clause (2)(a) of the covenant described above under the
caption “—Repurchase at the Option of Holders—Asset Sales”), net of all costs relating to such Asset Sale, including (a) legal, accounting and investment banking fees, finder’s fees, sales commissions, employee
severance costs, and any relocation expenses incurred as a result of the Asset Sale, (b) taxes paid or payable as a result of the Asset Sale, in each case, after taking into account any available tax credits or deductions and any tax sharing
arrangements, (c) amounts required to be applied to the repayment of Indebtedness, other than Indebtedness under a Credit Facility, secured by a Lien on the asset or assets that were the subject of such Asset Sale, (d) all distributions
and other payments required to be made to minority interest holders in Restricted Subsidiaries as a result of such Asset Sale and (e) any amounts to be set aside in any reserve established in accordance with GAAP or any amount placed in escrow,
in either case for adjustment in respect of the sale price of such properties or assets or for liabilities associated with such Asset Sale and retained by Issuer or any of its Restricted Subsidiaries until such time as such reserve is reversed or
such escrow arrangement is terminated, in which case Net Proceeds shall include only the amount of the reserve so reversed or the amount returned to Issuer or its Restricted Subsidiaries from such escrow arrangement, as the case may be. 

“New Markets” means the collective reference to any wireless telephone markets other than the metropolitan areas of Las
Vegas, Nevada; Los Angeles, San Francisco and Sacramento, California; Detroit, Michigan; Dallas/Fort Worth, Texas; Tampa/Sarasota, Orlando, Miami and Jacksonville, Florida; Atlanta, Georgia; Philadelphia, Pennsylvania; New York, New York; Boston,
Massachusetts; and Hartford, Connecticut. 
 “New Market Losses” means, for any period, to the extent such losses were
deducted in computing such Consolidated Net Income during the applicable period, an amount equal to any extraordinary loss plus any net loss (without duplication) realized by Issuer or any of its Restricted Subsidiaries incurred in connection with
construction, launch and operations in any New Market for such period, so long as such net losses are incurred on or prior to the fourth anniversary after the initial commencement of commercial operations in the applicable New Market. 

“Non-Recourse Debt” means Indebtedness: 
  

	(1)	as to which neither Issuer nor any of its Restricted Subsidiaries (a) provides credit support of any kind (including any undertaking, agreement or instrument that would constitute Indebtedness), subject to
customary “bad-boy” exceptions, (b) is directly or indirectly liable as a guarantor or otherwise, or (c) constitutes the lender; 

  

	(2)	no default with respect to which (including any rights that the holders of the Indebtedness may have to take enforcement action against an Unrestricted Subsidiary) would permit upon notice, lapse of time or both any
holder of any other Indebtedness of Issuer or any of its Restricted Subsidiaries to declare a default on such other Indebtedness or cause the payment of the Indebtedness to be accelerated or payable prior to its Stated Maturity; and

  

	(3)	as to which the lenders have been notified in writing that they will not have any recourse to the stock or assets of Issuer or any of its Restricted Subsidiaries. 

“Note Guarantee” means the Guarantee by each Guarantor of obligations of Issuer under the indenture and the notes of any
series, executed in accordance with the provisions of the indenture. 
 “Obligations” means any principal, interest,
penalties, fees, indemnifications, reimbursements, cash collateral obligations, damages and other liabilities payable under the documentation governing any Indebtedness. 

  
 A-46 

 “Permitted Bond Hedge Transaction” means any call or capped call option (or
substantively equivalent derivative transaction) on Parent’s common stock purchased by Issuer in connection with the issuance of any Convertible Debt; provided that the purchase price for such Permitted Bond Hedge Transaction, does not
exceed the net cash proceeds received by Issuer from the sale of such Convertible Debt issued in connection with the Permitted Bond Hedge Transaction. 

“Permitted Business” means those businesses in which Issuer and its Subsidiaries were engaged on the Closing Date, or any
business similar, related, incidental or ancillary thereto or that constitutes a reasonable extension or expansion thereof, or any business reasonably related to the telecommunications industry, and the acquisition, holding or exploitation of any
license relating to the delivery of those services. 
 “Permitted Holder” means (i) DT and (ii) any direct or
indirect Subsidiary of DT. 
 “Permitted Investments” means: 

 

	(1)	any Investment in Issuer or in any Restricted Subsidiary of Issuer; 

  

	(2)	any Investment in Cash Equivalents; 

  

	(3)	any Investment by Issuer or any Restricted Subsidiary of Issuer in a Person, if as a result of such Investment: 

  

	 	(a)	such Person becomes a Restricted Subsidiary of Issuer; or 

  

	 	(b)	such Person is merged, consolidated or amalgamated with or into, or transfers or conveys substantially all of its assets to, or is liquidated into, Issuer or a Restricted Subsidiary of Issuer; 

 

	(4)	any Investment made as a result of the receipt of non-cash consideration from an Asset Sale that was made pursuant to and in compliance with the covenant described above under the caption “—Repurchase at the
Option of Holders—Asset Sales”; 

  

	(5)	any acquisition of assets or Capital Stock solely in exchange for the issuance of Equity Interests (other than Disqualified Stock) of Issuer or Equity Interests of Parent; 

 

	(6)	any Investments received in compromise or resolution of (A) obligations of trade creditors or customers that were incurred in the ordinary course of business of Issuer or any of its Restricted Subsidiaries,
including pursuant to any plan of reorganization or similar arrangement upon the bankruptcy or insolvency of any trade creditor or customer; or (B) litigation, arbitration or other disputes with Persons who are no Affiliates; 

 

	(7)	Investments represented by Hedging Obligations; 

  

	(8)	loans or advances to employees made in the ordinary course of business of Issuer or any Restricted Subsidiary of Issuer in an aggregate principal amount not to exceed $50.0 million at any one time outstanding;

  

	(9)	any payment on or with respect to, or purchase, redemption, defeasement or other acquisition or retirement for value of (i) the notes, and any additional notes of the same series, (ii) the DT Notes, and any
additional notes of the same series, and any Exchange Notes (as defined in the base indenture) relating thereto, (iii) any of the $1.75B Notes or (iv) any other Indebtedness that is pari passu with the notes; 

 

	(10)	advances and prepayments for asset purchases in the ordinary course of business in a Permitted Business of Issuer or any of its Restricted Subsidiaries; 

 

	(11)	Investments existing on the Closing Date, including Investments held by MetroPCS Wireless, Inc., Issuer and their Subsidiaries immediately prior to the Merger; 

 

	(12)	Investments in the ISIS Joint Venture having an aggregate Fair Market Value (measured on the date each such Investment was made and without giving effect to subsequent changes in value), when taken together with all
other Investments made pursuant to this clause (12) since the Closing Date that are at that time outstanding, not to exceed $300.0 million; 

  
 A-47 

	(13)	Permitted Bond Hedge Transactions which constitute Investments; 

  

	(14)	(a) Permitted Joint Venture Investments, and (b) other Investments in any Person other than an Affiliate of Issuer (excluding any Person that is an Affiliate of Issuer solely by reason of Parent’s ownership,
directly or indirectly, of Equity Interests or Parent’s control, of such Person or which becomes an Affiliate as a result of such Investment), to the extent such Investment under (a) or (b) has an aggregate Fair Market Value (measured
on the date each such Investment was made and without giving effect to subsequent changes in value), when taken together with all other Investments made pursuant to this clause (14) that are at the time outstanding, not to exceed 12.5% of
Issuer’s Total Assets on the date of such Investment; 

  

	(15)	Investments in a Person primarily engaged in a Permitted Business having an aggregate Fair Market Value (measured on the date each such Investment was made and without giving effect to subsequent changes in value), when
taken together with all other Investments made pursuant to this clause (15) since the Closing Date that are at that time outstanding, not to exceed $250.0 million; 

 

	(16)	guarantees permitted under the covenant described under the caption “—Certain Covenants—Incurrence of Indebtedness and Issuance of Disqualified Stock and Preferred Stock”; and 

 

	(17)	deposits or payments made with the FCC in connection with the auction or licensing of Governmental Authorizations; 

  

	(18)	any Investment deemed made from time to time pursuant to the covenant described under the caption “—Certain Covenants—Designation of Restricted and Unrestricted Subsidiaries” in connection with a
Specified Unrestricted Subsidiary Designation, in an amount equal to the aggregate Fair Market Value of all outstanding Investments owned by Issuer and its Restricted Subsidiaries in the Subsidiaries designated as Unrestricted Subsidiaries pursuant
to such Specified Unrestricted Subsidiary Designation, but only to the extent not in excess of the aggregate Fair Market Value of all outstanding Investments owned by Issuer and its Restricted Subsidiaries in such designated Subsidiaries as of the
Closing Date (for this purpose, it shall be assumed, as regards to Investments in any Designated Tower Entity, that all wireless communications sites, towers, and related contracts, equipment, improvements, real estate, and other assets of Issuer
and its Subsidiaries subject to the Towers Transaction that are contemplated to be transferred to the Designated Tower Entities in accordance with the terms of the Towers Transaction, as contemplated in the Towers Transaction Agreements as in effect
as of March 19, 2013, had been transferred to the Designated Tower Entities, whether or not all such transfers have in fact then taken place, but disregarding any transfers of assets not part of the Towers Transaction as contemplated in the
Towers Transaction Agreements as in effect as of March 19, 2013); 

  

	(19)	any other Investments made in connection with the Towers Transaction, as contemplated in the Towers Transaction Agreements as in effect as of March 19, 2013; and 

 

	(20)	other Investments; provided that the Debt to Cash Flow Ratio calculated on a pro forma basis in the manner described in the definition of “Debt to Cash Flow Ratio” after giving effect to such Investment
would be equal to or less than 3.50 to 1.00. 

 Notwithstanding any other provision to the contrary, no Permitted Investment
shall be deemed to be a Restricted Payment. 
 “Permitted Joint Venture Investment” means, with respect to any specified
Person, Investments in any other Person engaged in a Permitted Business of which at least 40% of the outstanding Capital Stock of such other Person is at the time owned directly or indirectly by the specified Person. 

“Permitted Liens” means: 
  

	(1)	 Liens securing Indebtedness and other Obligations under Credit Facilities and/or securing Hedging Obligations
related thereto permitted by clauses (1), (8) and (19) of the second paragraph of the covenant titled “—Certain Covenants—Incurrence of Indebtedness and Issuance of Disqualified Stock and Preferred

  
 A-48 

	 	
Stock,” provided that any secured Permitted Refinancing Indebtedness incurred in respect of Indebtedness or other Obligations previously secured pursuant to this clause (1) will
be treated as Indebtedness secured pursuant to this clause (1) in making any determination as to whether additional Indebtedness or other Obligations may be secured pursuant to this clause (1); 

 

	(2)	Liens in favor of Issuer or the Guarantors; 

  

	(3)	Liens on property of a Person existing at the time such Person becomes a Restricted Subsidiary or is merged with or into or consolidated with Issuer or any Subsidiary of Issuer; provided that such Liens were in
existence prior to the contemplation of such merger or consolidation and do not extend to any assets (other than improvements thereon, accessions thereto and proceeds thereof) other than those of the Person that becomes a Restricted Subsidiary or is
merged into or consolidated with Issuer or the Subsidiary; 

  

	(4)	Liens on property (including Capital Stock) existing at the time of acquisition of the property by Issuer or any Subsidiary of Issuer; provided that such Liens were in existence prior to, and not incurred in
contemplation of, such acquisition; 

  

	(5)	(a) bankers’ Liens, rights of setoff or similar rights and remedies as to deposit accounts or other funds maintained with a depositary institution, and (b) Liens, deposits (including deposits with the FCC) or
pledges to secure the performance of bids, tenders, trade or governmental contracts, leases, licenses, statutory obligations, surety or appeal bonds, performance bonds or other obligations of a like nature incurred in the ordinary course of
business; 

  

	(6)	Liens to secure Indebtedness (including Capital Lease Obligations) permitted by clause (4) of the second paragraph of the covenant titled “—Certain Covenants—Incurrence of Indebtedness and Issuance
of Disqualified Stock and Preferred Stock” covering only the assets (including the proceeds thereof, accessions thereto and upgrades thereof) acquired with or financed by such Indebtedness; 

 

	(7)	Liens existing on the Closing Date (including Liens on the assets of MetroPCS Wireless, Inc. and its Subsidiaries existing immediately prior to the Merger); 

 

	(8)	Liens for taxes, assessments or governmental charges or claims that are not yet delinquent or that are being contested in good faith by appropriate proceedings; provided that any reserve or other appropriate
provision as is required in conformity with GAAP has been made therefor; 

  

	(9)	Liens imposed by law or contract, such as carriers’, warehousemen’s, suppliers’, vendors’, construction, repairmen’s, landlord’s and mechanics’ Liens or other similar Liens, in each
case, incurred in the ordinary course of business; 

  

	(10)	survey exceptions, encumbrances, easements or reservations of, or rights of others for, licenses, rights-of-way, sewers, electric lines, telegraph and telephone lines and other similar purposes, or zoning or other
restrictions as to the use of real property that were not incurred in connection with Indebtedness and that do not in the aggregate materially adversely affect the value of said properties or materially impair their use in the operation of the
business of such Person; 

  

	(11)	Liens arising by reason of a judgment, attachment, decree or court order, to the extent not otherwise resulting in an Event of Default, and any Liens that are required to protect or enforce any rights in any
administrative, arbitration or other court proceedings in the ordinary course of business; 

  

	(12)	Liens created for the benefit of (or to secure) the notes (or the Note Guarantees); 

  

	(13)	Liens to secure any Permitted Refinancing Indebtedness permitted to be incurred under the indenture; provided, however, that: 

 

	 	(a)	the new Lien shall be limited to all or part of the same property and assets that secured or, under the written agreements pursuant to which the original Lien arose, could secure the original Lien (plus improvements and
accessions to such property and assets and proceeds or distributions of such property and assets and improvements and accessions thereto); and 

  
 A-49 

	 	(b)	the Indebtedness secured by the new Lien is not increased to any amount greater than the sum of (x) the outstanding principal amount or, if greater, committed amount, of the Indebtedness being renewed, refunded,
refinanced, replaced, defeased or discharged and (y) any amount necessary to pay any fees and expenses, including premiums, related to such renewal, refunding, refinancing, replacement, defeasance or discharge; 

 

	(14)	(a) Liens contained in purchase and sale agreements or lease agreements limiting the transfer of assets pending the closing of the transactions contemplated thereby or the termination of the lease, respectively,
(b) spectrum leases or other similar lease or licensing arrangements contained in, or entered into in connection with, purchase and sale agreements, and (c) Liens relating to deposits or escrows established in connection with purchase and
sale agreements; 

  

	(15)	Liens that may be deemed to exist by virtue of contractual provisions that restrict the ability of Issuer or any of its Subsidiaries from granting or permitting to exist Liens on their respective assets;

  

	(16)	Liens in favor of the trustee as provided for in the indenture on money or property held or collected by the trustee in its capacity as trustee; 

 

	(17)	Liens on cash or Cash Equivalents securing (a) worker’s compensation claims, self-insurance obligations, unemployment insurance or other social security, old age pension, bankers’ acceptances, performance
bonds, completion bonds, bid bonds, appeal bonds, indemnity bonds, specific performance or injunctive relief bonds, surety bonds, public liability obligations, or other similar bonds or obligations, or securing any Guarantees or letters of credit
functioning as or supporting any of the foregoing, in each case incurred in the ordinary course of business or (b) letters of credit required to be issued for the benefit of any Person that controls a Permitted Joint Venture Investment to
secure any put right for the benefit of the Person controlling the Permitted Joint Venture Investment; 

  

	(18)	Liens arising from Uniform Commercial Code financing statement filings regarding operating leases entered into in the ordinary course of business covering only the property under lease (plus improvements and accessions
to such property and proceeds or distributions of such property and improvements and accessions thereto); 

  

	(19)	any interest or title of a lessor, licensor or sublicensor in the property subject to any lease, license or sublicense entered into in the ordinary course of business; 

 

	(20)	Liens on cash or Cash Equivalents on deposit to secure reimbursement obligations under letters of credit incurred in the ordinary course of business; 

 

	(21)	Liens on and pledges of the Equity Interests of any Unrestricted Subsidiary or any Person that is a Permitted Joint Venture Investment owned by Issuer or any Restricted Subsidiary to the extent securing Non-Recourse
Debt or other Indebtedness of such Unrestricted Subsidiary or Person; 

  

	(22)	Liens arising under operating agreements, joint venture agreements, partnership agreements, contracts for sale and other agreements arising in the ordinary course of business that are customary in the Permitted
Business, and applicable only to the assets that are the subject of such agreements or contracts; 

  

	(23)	Liens securing Hedging Obligations; 

  

	(24)	Liens in favor of customs and revenue authorities arising as a matter of law to secure payment of customs duties in connection with the importation of goods in the ordinary course of business; 

 

	(25)	Liens encumbering reasonable customary initial deposits and margin deposits and similar Liens attaching to commodity trading accounts or other brokerage accounts incurred in the ordinary course of business and not for
speculative purposes; 

  

	(26)	Liens upon specific items of inventory or other goods and proceeds of any Person securing such Person’s obligations in respect of bankers’ acceptances issued or created for the account of such Person to
facilitate the purchase, shipment or storage of such inventory or other goods; 

  
 A-50 

	(27)	Liens securing any arrangement for treasury, depositary or cash management services provided to Issuer or any of its Restricted Subsidiaries in the ordinary course of business; 

 

	(28)	Liens with respect to obligations that do not exceed at any time the greater of (x) $500.0 million and (y) 1.0% of Issuer’s Total Assets at such time; 

 

	(29)	Liens encumbering deposits made to secure obligations arising from statutory, regulatory, contractual or warranty requirements; and 

  

	(30)	Liens, if any, incurred in connection with the Towers Transaction. 

 “Permitted
MetroPCS Notes” shall have the meaning assigned to such term in the Business Combination Agreement. 
 “Permitted Payments
to Parent” means, without duplication as to amounts: 
  

	(1)	payments to Parent to permit Parent to pay reasonable accounting, legal, investment banking fees and administrative expenses of Parent when due; and 

 

	(2)	for so long as Issuer is a member of a group filing a consolidated or combined tax return with Parent, payments to Parent in respect of an allocable portion of the tax liabilities of such group that is attributable to
Issuer and its Subsidiaries (“Tax Payments”). The Tax Payments shall not exceed the lesser of (i) the amount of the relevant tax (including any penalties and interest) that Issuer would owe if Issuer were filing a separate tax return
(or a separate consolidated or combined return with its Subsidiaries that are members of the consolidated or combined group), taking into account any carryovers and carrybacks of tax attributes (such as net operating losses) of Issuer and such
Subsidiaries from other taxable years and (ii) the net amount of the relevant tax that Parent actually owes to the appropriate taxing authority. 

“Permitted Refinancing Indebtedness” means any Indebtedness of Issuer or any of its Restricted Subsidiaries, any Disqualified
Stock of Issuer or any Preferred Stock of any Restricted Subsidiary issued (a) in exchange for, or the net proceeds of which are used to, extend the maturity renew, refund, refinance, replace, defease, discharge or otherwise retire for value,
in whole or in part, or (b) constituting an amendment, modification or supplement to or a deferral or renewal of ((a) and (b) above, collectively, a “Refinancing”), any other Indebtedness of Issuer or any of its Restricted
Subsidiaries (other than intercompany Indebtedness), any Disqualified Stock of Issuer or any Preferred Stock of a Restricted Subsidiary in a principal amount or, in the case of Disqualified Stock of Issuer or Preferred Stock of a Restricted
Subsidiary, liquidation preference, not to exceed (after deduction of reasonable and customary fees and expenses incurred in connection with the Refinancing) the lesser of: 
  

	(1)	the principal amount or, in the case of Disqualified Stock or Preferred Stock, liquidation preference, of the Indebtedness, Disqualified Stock or Preferred Stock so Refinanced (plus, in the case of Indebtedness, the
amount of accrued interest and premium, if any paid in connection therewith), and 

  

	(2)	if the Indebtedness being Refinanced was issued with any original issue discount, the accreted value of such Indebtedness (as determined in accordance with GAAP) at the time of such Refinancing; 

in each case, except to the extent that any such excess principal amount (or accreted value, as applicable) would be then permitted to be incurred by other
provisions of the covenant described above under the caption “—Certain Covenants—Incurrence of Indebtedness and Issuance of Disqualified Stock and Preferred Stock;” provided that such excess principal amount of
Indebtedness shall be deemed to be incurred under such other provision. 
 Notwithstanding the preceding, no Indebtedness, Disqualified
Stock or Preferred Stock will be deemed to be Permitted Refinancing Indebtedness, unless: 
  

	(1)	 such Indebtedness, Disqualified Stock or Preferred Stock has a final maturity date or redemption date, as
applicable, later than the final maturity date or redemption date, as applicable, of, and has a Weighted 

  
 A-51 

	 	
Average Life to Maturity equal to or greater than the Weighted Average Life to Maturity of, the Indebtedness, Disqualified Stock or Preferred Stock being Refinanced; 

 

	(2)	if the Indebtedness, Disqualified Stock or Preferred Stock being Refinanced is contractually subordinated in right of payment to the notes, such Indebtedness, Disqualified Stock or Preferred Stock is contractually
subordinated in right of payment to, the notes, on terms at least as favorable to the holders of notes as those contained in the documentation governing the Indebtedness, Disqualified Stock or Preferred Stock being Refinanced at the time of the
Refinancing; and 

  

	(3)	such Indebtedness or Disqualified Stock is incurred or issued by Issuer or such Indebtedness, Disqualified Stock or Preferred Stock is incurred or issued by the Restricted Subsidiary who is the obligor on the
Indebtedness being Refinanced or the issuer of the Disqualified Stock or Preferred Stock being Refinanced, or a Restricted Subsidiary of such obligor or issuer. 

“Person” means any individual, corporation, partnership, joint venture, association, joint-stock company, trust,
unincorporated organization, limited liability company or government or other entity. 
 “Preferred Stock” means, with
respect to any Person, any Capital Stock of such Person that has preferential rights to any other Capital Stock of such Person with respect to dividends or payments upon liquidation. 

“Rating Agency” means each of Moody’s, S&P, Fitch and, if any of Moody’s, S&P or Fitch ceases to exist or
ceases to rate the notes of the applicable series for reasons outside of the control of Issuer, any other “nationally recognized statistical rating organization” as such term is defined under Section 3(a)(62) of the Exchange Act
selected by Issuer as a replacement agency. 
 “Ratings Decline Period” means the period that (i) begins on the
earlier of (a) the date of the first public announcement of the occurrence of a Change of Control or of the intention by Issuer or a shareholder of Issuer as applicable, to effect a Change of Control or (b) the occurrence thereof and
(ii) ends 90 days following consummation of such Change of Control; provided that such period shall be extended for so long as the rating of the notes of the applicable series, as noted by the applicable Rating Agency, is under publicly
announced consideration for downgrade by the applicable Rating Agency. 
 “Reinsurance Entity” means TMUS Assurance
Corporation, a Hawaii corporation and any successor thereto. 
 “Replacement Assets” means: (i) capital expenditures
with respect to any assets, (ii) other assets that will be used or useful in a Permitted Business, (iii) all or substantially all of the assets of a Permitted Business, (iv) Voting Stock of any Person engaged in a Permitted Business
that, when taken together with all other Voting Stock of such Person owned by Issuer and its Restricted Subsidiaries, constitutes a majority of the Voting Stock of such Person and such Person will become a Restricted Subsidiary on the date of the
acquisition thereof or (v) deposits or payments to acquire FCC Licenses. 
 “Restricted Investment” means an
Investment other than a Permitted Investment. 
 “Restricted Subsidiary” of a Person means any Subsidiary of the referenced
Person that is not an Unrestricted Subsidiary. 
 “Revolving Credit Facilities” means the revolving credit facilities
entered into by Issuer pursuant to the Unsecured Revolving Credit Agreement, dated as of December 29, 2016, by and among Issuer, Parent, and DT, as administrative agent and lender, and the Senior Secured Revolving Credit Agreement, dated as of
December 29, 2016, by and among Issuer, Parent and DT, as administrative agent, collateral agent and lender. 

“S&P” means Standard & Poor’s Rating Services, a division of The McGraw-Hill Companies, Inc., and its
successors. 

  
 A-52 

 “Secured Debt to Cash Flow Ratio” means, with respect to any Person as of any
date of determination, the ratio of (a) the Consolidated Indebtedness of such Person as of such date that is secured by a Lien, less cash and Cash Equivalents, to (b) the Consolidated Cash Flow of such Person for the four most recent full
fiscal quarters ending immediately prior to such date for which internal financial statements are available. 
 For purposes of making the
computation referred to above, the Secured Debt to Cash Flow Ratio shall be calculated on a pro forma basis in the manner described in the second paragraph of the definition of “Debt to Cash Flow Ratio.” 

“Senior Notes Election” shall have the meaning assigned to such term in the Unsecured Revolving Credit Agreement, dated as of
December 29, 2016, by and among Issuer, Parent, and DT, as administrative agent and lender, and the Senior Secured Revolving Credit Agreement, dated as of December 29, 2016, by and among Issuer, Parent and DT, as administrative agent,
collateral agent and lender. 
 “September 2010 Senior Notes Indenture” means the Indenture, dated as of September 21,
2010, as supplemented by the Second Supplemental Indenture, dated November 17, 2010, among MetroPCS Wireless, Inc., the guarantors party thereto and Wells Fargo Bank, N.A., as trustee, as supplemented by the Fourth Supplemental Indenture, dated
as of December 23, 2010, by MetroPCS Wireless, Inc., the guarantors party thereto and Wells Fargo Bank, N.A., as trustee, as further supplemented by the December 2012 Senior Notes Sixth Supplemental Indenture, as further supplemented by the
Seventh Supplemental Indenture, dated as of May 1, 2013, among T-Mobile USA, Inc., the guarantors party thereto and Wells Fargo Bank, N.A., as trustee, as further supplemented by the Eighth Supplemental Indenture, dated as of July 15,
2013, among T-Mobile USA, Inc., the guarantors party thereto and Wells Fargo Bank, N.A., as trustee, as further supplemented by that certain Ninth Supplemental Indenture, dated as of August 11, 2014, among T-Mobile USA, Inc., the guarantors
named therein and Wells Fargo Bank, N.A., as trustee, as further supplemented by that certain Tenth Supplemental Indenture, dated as of September 28, 2015, among T-Mobile USA, Inc., the guarantors named therein and Wells Fargo Bank, N.A., as
trustee, and as further supplemented by that certain Eleventh Supplemental Indenture, dated as of August 30, 2016, among T-Mobile USA, Inc., the guarantors named therein and Wells Fargo Bank, N.A., as trustee. 

“Series Issue Date” means, with respect to a series of notes, the effective date of the Board Resolution, officers’
certificate or supplemental indenture pursuant to which the notes of such series are first issued. 
 “Series Issue Date Existing
Indebtedness” means, with respect to a series of notes, the notes of any series issued under the base indenture and in existence on the applicable Series Issue Date for such series of notes (including the DT Notes) (and any “Exchange
Notes” (as defined in the base indenture) relating thereto) and, in each case, the related Note Guarantees (other than the notes of such series issued on the Series Issue Date), including, for the avoidance of doubt, the Existing Senior Notes.

 “Significant Subsidiary” means any Restricted Subsidiary that as of the end of the most recent fiscal quarter for which
financial statements are available, would be a “significant subsidiary” as defined in Article 1, Rule-102 of Regulation S-X, promulgated pursuant to the Securities Act, as such Regulation is in effect on the Closing Date. 

“Specified Issuer Indebtedness” means any Indebtedness of Issuer in a principal amount of $250 million or more. 

“Specified Unrestricted Subsidiary Designation” has the meaning assigned to such term in the covenant described above under
the caption “—Certain Covenants—Designation of Restricted and Unrestricted Subsidiaries.” 
 “Stated
Maturity” means, with respect to any installment of interest or principal on any series of Indebtedness, the date on which the payment of interest or principal was scheduled to be paid in the

  
 A-53 

 
documentation governing such Indebtedness as of the Closing Date, and will not include any contingent obligations to repay, redeem or repurchase any such interest or principal prior to the date
originally scheduled for the payment thereof. 
 “Subordinated Indebtedness” means: 

 

	(1)	with respect to Issuer, any Indebtedness of Issuer which is by its terms subordinated in right of payment to the notes of the applicable series; and 

 

	(2)	with respect to any Guarantor, any Indebtedness of such Guarantor which is by its terms subordinated in right of payment to such Guarantor’s Guarantee of the notes of the applicable series. 

“Subsidiary” means, with respect to any specified Person: 

 

	(1)	any corporation, association or other business entity of which more than 50% of the total voting power of shares of Capital Stock entitled (without regard to the occurrence of any contingency and after giving effect to
any voting agreement or stockholders’ agreement that effectively transfers voting power) to vote in the election of directors, managers or trustees of the corporation, association or other business entity is at the time owned or controlled,
directly or indirectly, by that Person or one or more of the other Subsidiaries of that Person (or a combination thereof); and 

  

	(2)	any partnership (a) the sole general partner or the managing general partner of which is such Person or a Subsidiary of such Person or (b) only general partners of which are that Person or one or more
Subsidiaries of that Person (or any combination thereof). 

 “Subsidiary Guarantors” means, collectively, the
Guarantors that are Subsidiaries of Issuer. 
 “Term Loan Credit Agreement” means that certain credit agreement dated
November 9, 2015 by and among Issuer, the several lenders party thereto and Deutsche Bank AG New York Branch as administrative agent and collateral agent, as amended by that certain First Incremental Facility Amendment, dated as of
December 29, 2016, by and among Parent, Deutsche Bank AG New York Branch, as administrative agent, the guarantors party thereto and DT, as the initial incremental term loan lender, and that certain Second Incremental Facility Amendment, dated
as of January 25, 2017, by and among Parent, Deutsche Bank, AG New York Branch, as administrative agent, the guarantors party thereto and DT, including any notes, guarantees, collateral documents, instruments and agreements executed in
connection therewith, and, in each case, as amended, restated, modified, renewed, refunded, replaced in any manner (whether upon or after termination or otherwise) or refinanced in whole or in part from time to time. 

“TMUS Working Capital Facility” shall have the meaning assigned to such term in the Business Combination Agreement. 

“Total Assets” means the consolidated total assets of a Person and its Subsidiaries as set forth on the most recent balance
sheet of such Person prepared in accordance with GAAP. 
 “Towers Transaction” means the transactions contemplated by the
Towers Transaction Agreements. 
 “Towers Transaction Agreements” means: (i) the Master Agreement, dated as of
September 28, 2012 (as the same may be amended, modified or supplemented from time to time), among Issuer, Crown Castle International Corp., a Delaware corporation, and certain Subsidiaries of Issuer; and (ii) each of the or the
transaction documents entered into in connection therewith or contemplated thereby, as they may be amended, modified or supplemented from time to time. 

“Transactions” means (i) the Merger, (ii) the offering of the Permitted MetroPCS Notes and the DT Notes and the
incurrence of the TMUS Working Capital Facility, (iii) the refinancing of Existing Indebtedness on or prior to the Closing Date, (iv) “the Cash Payment” and the “MetroPCS Reverse Stock Split,” each as defined in the
Business Combination Agreement, and (v) all other transactions consummated in connection therewith. 

  
 A-54 

 “Treasury Rate” means, 

 

	(1)	with respect to the 2026 notes and any redemption date, the yield to maturity of United States Treasury securities with a constant maturity (as compiled and published in the most recent Federal Reserve Statistical
Release H.15 (519) that has become publicly available at least two business days prior to the redemption date (or, if such Statistical Release is no longer published (or the relevant information is no longer published therein), any publicly
available source of similar market data)) most nearly equal to the period from such redemption date to February 1, 2021; provided, however, that if the period from such redemption date to February 1, 2021 is less
than one year, the weekly average yield on actually traded United States Treasury securities adjusted to a constant maturity of one year will be used. Issuer will (1) calculate the Treasury Rate on the third business day preceding the
applicable redemption date and (2) prior to such redemption date file with the trustee an officers’ certificate setting forth the Applicable Premium and the Treasury Rate and showing the calculation of each in reasonable detail; and

  

	(2)	with respect to the 2028 notes and any redemption date, the yield to maturity of United States Treasury securities with a constant maturity (as compiled and published in the most recent Federal Reserve Statistical
Release H.15 (519) that has become publicly available at least two business days prior to the redemption date (or, if such Statistical Release is no longer published (or the relevant information is no longer published therein), any publicly
available source of similar market data)) most nearly equal to the period from such redemption date to February 1, 2023; provided, however, that if the period from such redemption date to February 1, 2023 is less than one
year, the weekly average yield on actually traded United States Treasury securities adjusted to a constant maturity of one year will be used. Issuer will (1) calculate the Treasury Rate on the third business day preceding the applicable
redemption date and (2) prior to such redemption date file with the trustee an officers’ certificate setting forth the Applicable Premium and the Treasury Rate and showing the calculation of each in reasonable detail. 

“Unrestricted Subsidiary” means any Subsidiary of Issuer that is designated by the Board of Directors of Issuer as an
Unrestricted Subsidiary pursuant to a resolution of the Board of Directors, but only to the extent that: 
  

	(1)	except as permitted by the covenant described above under the caption “—Certain Covenants—Transactions with Affiliates,” such Subsidiary is not party to any agreement, contract, arrangement or
understanding with Issuer or any Restricted Subsidiary of Issuer unless the terms of any such agreement, contract, arrangement or understanding are, taken as a whole, no less favorable to Issuer or such Restricted Subsidiary than those that might be
obtained at the time from Persons who are not Affiliates of Issuer; 

  

	(2)	such Subsidiary does not hold any Liens on any property of Parent, Issuer or any of its Restricted Subsidiaries; and 

  

	(3)	such Subsidiary has not guaranteed or otherwise directly or indirectly provided credit support for any Indebtedness of Issuer or any of its Restricted Subsidiaries, except to the extent that such guarantee or credit
support would be released upon such designation. 

 “Voting Stock” of any specified Person as of any date
means the Capital Stock of such Person that is at the time entitled to vote in the election of the Board of Directors of such Person. 

“Weighted Average Life to Maturity” means, when applied to any Indebtedness at any date, the number of years obtained by
dividing: 
  

	(1)	the sum of the products obtained by multiplying (a) the amount of each then remaining installment, sinking fund, serial maturity or other required payments of principal, including payment at final maturity, in
respect of the Indebtedness, by (b) the number of years (calculated to the nearest one-twelfth) that will elapse between such date and the making of such payment; by 

 

	(2)	the then outstanding principal amount of such Indebtedness. 

  
 A-55 

 “Wholly-Owned Subsidiary” of any specified Person means a Subsidiary of such
Person, all of the outstanding Capital Stock or other ownership interests of which (other than directors’ qualifying shares) will at the time be owned by such Person or by one or more Wholly-Owned Subsidiaries of such Person. Except if
expressly otherwise specified, Wholly-Owned Subsidiary means a Wholly-Owned Subsidiary of Issuer. 

  
 A-56Exhibit

January 23, 2018

Personal & Confidential 
Richard Fitzgerald

Dear Richard:

It is my pleasure to offer you the position of Chief Financial Officer for Eleven Biotherapeutics, Inc. (the “Company” or “Eleven Bio”) reporting to Stephen Hurly, President and CEO.  This letter agreement summarizes important details about your employment, should you accept this offer.  This letter agreement shall be effective as of the last date of execution by the parties hereto (the “Effective Date”).
1.Full-Time and Best Efforts: As Eleven Bio’s Chief Financial Officer, which is a full-time position, we expect that you will devote substantially all of your working time to the performance of your Company duties in a satisfactory manner and to the best of your abilities at all times.  You shall not engage in any other business or occupation during your employment here, including, without limitation, any activity that conflicts with the interests of the Company, interferes with the proper and efficient performance of your duties for the Company, or interferes with your exercise of judgment in the Company’s best interests. Approval of the CEO and/or Board will be required for you to serve on other outside boards while you are employed by the Company, including any outside for-profit boards, which approval shall not be unreasonably withheld, delayed or conditioned. Notwithstanding the foregoing, you will be permitted to serve as an officer, director or trustee of any charitable, educational or non-profit organization, without the Company’s prior consent, provided that such services do not interfere with the performance of your duties to the Company or represent an actual or apparent conflict of interest with your role at the Company.
2.    Compensation: You shall receive an annualized salary of $305,000, paid in accordance with the Company's standard payroll practices and subject to all applicable tax reporting and withholding.  You will be considered for a merit review in conjunction with your performance review (which generally is conducted annually) and consistent with the Company’s compensation practices, as determined by the Board in its sole discretion.

245 First Street, Suite 1800, Cambridge, MA 02142        PHONE: 617-444-8550

3.    Annual Bonus: You will be eligible for an annual target bonus of up to 30% of your base salary, based upon achievement of both corporate and individual goals, and contingent upon your individual and our Company performance.  The determination of whether a bonus will be granted, and the amount of any such bonus, will be determined by the Company in its reasonable good faith and sole discretion.  All annual bonuses, if any, will be payable no later than March 15 of the year following the year in which they were earned.  Please note that you must be employed on the date bonuses, if any, are paid, in order to be eligible for such a payment, as such bonuses also serve as retention incentives.
4.    Stock Option: Subject to and upon approval by the Board or a duly authorized committee thereof, you will be granted a nonstatutory stock option to purchase 100,000 shares of Common Stock, $0.001 par value per share, of the Company (the “Common Stock”), which option is granted pursuant to the Company’s 2014 Stock Incentive Plan (the “Plan”).  The stock option shall have an exercise price equal to the closing price of the Common Stock on the NASDAQ Global Market on the date of such grant and shall vest as to 25% of the shares subject to such option on the first anniversary of the date of grant of the option and as to an additional 6.25% of the shares underlying the option at the end of each successive three-month period thereafter until the fourth anniversary of the date of grant of the option.  The Board will consider annually whether to grant additional equity awards to its employees and you will be eligible to be considered for such additional annual equity grants.
5.    Employee Benefits; Expenses: The Company offers a comprehensive benefit package that includes group health, dental and vision plans as well as life and disability and time-off benefits. Your eligibility to participate in these plans and receive benefits thereunder is subject to the plan documents governing such benefits. Notwithstanding the foregoing, you understand and agree that nothing contained herein will require the Company to establish or maintain any fringe benefits and any such benefits may be modified, amended, terminated or cancelled at any time by the Company in its sole and absolute discretion.
During your employment, the Company shall pay (or promptly reimburse you) for documented, out-of-pocket expenses reasonably incurred by you in performing your job, which are consistent with the Company’s policies in effect from time to time with respect to business expenses, subject to the Company’s requirements with respect to reporting of such expenses.
Please also note that all in-kind benefits provided and expenses eligible for reimbursement under this letter agreement shall be provided by the Company or incurred by you during the time periods set forth in this letter agreement. All reimbursements shall be paid as soon as administratively practicable, but in no event shall any reimbursement be paid after the last day of the taxable year following the taxable year in which the expense was incurred. The amount of in-

245 First Street, Suite 1800, Cambridge, MA 02142        PHONE: 617-444-8550

kind benefits provided or reimbursable expenses incurred in one taxable year shall not affect the in-kind benefits to be provided or the expenses eligible for reimbursement in any other taxable year. Such right to reimbursement or in-kind benefits is not subject to liquidation or exchange for another benefit.
6.    Vacation Time: As a full time employee of the Company, you are eligible for up to fifteen (15) paid vacation days that are accrued on a monthly basis at a rate of 1.25 days (10 hours) per month of full time employment. The use of vacation is governed by the Company’s vacation pay policy.
7.    Term of Employment; Restrictive Covenant Agreement: It is important for you to understand that you are an employee “at will”. This means that you have the right to terminate your employment relationship with Eleven Bio at any time for any or no reason. Similarly, the Company has the right to terminate its employment relationship with you at any time for any or no reason.  As a condition of your employment with the Company, you will be required to execute the enclosed Employee Non-Competition, Non-Solicitation, Confidentiality, and Assignment Agreement.  Your employment and this letter will be governed by the laws of Massachusetts.
8.    Severance Benefits: Notwithstanding the foregoing, in the event that Eleven Bio terminates your employment without “Cause” or you resign with “Good Reason” (each term as defined below and in either case a “Qualifying Termination”), you will be eligible for the benefits outlined in sub-paragraphs A or B (the “Severance Benefits”), subject to the terms set forth in this letter agreement:
		
	A.
	If a Qualifying Termination occurs: (i) Eleven Bio will pay you severance in the form of continuation of your base salary for a total of twelve (12) months, such amount to be paid in accordance with the Company’s then current payroll practices, except as otherwise specified in this letter, beginning on the Company’s first regular payroll date that occurs after the Payment Date (as defined below) and (ii) subject to the terms and conditions provided for in COBRA, and subject to your timely election of COBRA and copayment of premium amounts at the active employee’s rate, the Company shall pay its then current share of premium payments for group health and dental insurance after the termination date through (1) your severance period as outlined above, or (2) the date you become employed with benefits substantially comparable to the benefits provided under the corresponding Company plan, or (3) the date you become ineligible for COBRA benefits; provided, however, that such Company-paid premiums may be recorded 

245 First Street, Suite 1800, Cambridge, MA 02142        PHONE: 617-444-8550

as additional income pursuant to Section 6041 of the Internal Revenue Code of 1986, as amended (the “Code”) and not entitled to any tax qualified treatment to the extent necessary to comply with or avoid the discriminatory treatment prohibited by the Patient Protection and Affordable Care Act of 2010 and the Health Care and Education Reconciliation Act of 2010 or Section 105(h) of the Code. You shall be responsible for the entire COBRA premium should you elect to maintain this coverage after the earlier of the dates specified in sections 8.A.(ii)(1)-(3) above.
		
	B.
	If a Qualifying Termination occurs within twelve (12) months after a Change in Control Transaction (as defined below), then: (i) you will be eligible for the same severance payments and COBRA premium assistance as set forth in sections 8.A.i-A.ii above, subject to the same terms, conditions, and limitations as described therein; and (ii) the vesting of 100% of your then outstanding unvested equity grants shall be accelerated, such that all unvested equity grants vest and become fully exercisable or non-forfeitable as of the termination date.

For the sake of clarity, it shall not be a “Qualifying Termination” if your employment terminates because of your death or due to your suffering a Disability (as defined below).
		
	C.
	The Severance Benefits will be subject to the following terms:

i.    Solely for purposes of Section 409A of the Code, each salary continuation payment is considered a separate payment.
ii.    Any severance or other benefits under this offer letter will begin only upon the date of your “separation from service” (as defined under Section 409A(a)(2)(A)(i) of the Code and Treas. Reg. §1.409A-1(h)) which occurs on or after the date of termination of the employment. To the extent that the termination of your employment does not constitute a separation from service under Section 409A(a)(2)(A)(i) of the Code and Treas. Reg. §1.409A-1(h) (as the result of further services that are reasonably anticipated to be provided by you to the Company, or any of its parents, subsidiaries or affiliates, at the time your employment terminates), any severance benefits payable that constitute deferred compensation under Section 409A of the Code shall be delayed until after the date of a subsequent event constituting a separation from service under Section 409A(a)(2)(A)(i) of the Code and Treas. Reg. §1.409A-1(h). For purposes of clarification, this section shall not cause any forfeiture of benefits on your part, but shall only act as a delay until such time as a “separation from service” occurs.

245 First Street, Suite 1800, Cambridge, MA 02142        PHONE: 617-444-8550

Further, if you are a “specified employee” (as that term is used in Section 409A of the Code and regulations and other guidance issued thereunder) on the date your separation from service becomes effective, any severance benefits payable hereunder that constitute non-qualified deferred compensation under Section 409A of the Code shall be delayed until the earlier of (i) the business day following the six-month anniversary of the date your separation from service becomes effective, and (ii) the date of your death, but only to the extent necessary to avoid such penalties under Section 409A of the Code. On the earlier of (A) the business day following the six-month anniversary of the date your separation from service becomes effective, and (B) your death, the Company shall pay you in a lump sum the aggregate value of the non-qualified deferred compensation that the Company otherwise would have paid you prior to that date as described above. Neither the Company nor you shall have the right to accelerate or defer the delivery of any such payments or benefits except to the extent specifically permitted or required by Section 409A of the Code. The Company makes no representation or warranty and shall have no liability to you or any other person if any provision of this letter agreement is determined to constitute deferred compensation subject to Section 409A of the Code, but do not satisfy an exemption from, or the conditions of, Section 409A of the Code.
iii.    Eleven Bio’s obligations to make the above payments and provide the above benefits will be contingent upon your execution of and compliance with a release of claims (the “Release”), which Release must be signed and any applicable revocation period with respect thereto must have expired by the sixtieth (60th) day following your termination of employment.  The severance payments and benefits shall be paid or commence on the first payroll period following the date the waiver and release becomes effective (the “Payment Date”).  Notwithstanding the foregoing, if the 60th day following the date of termination occurs in the calendar year following the termination, then the Payment Date shall be no earlier than January 1 of such subsequent calendar year.  In addition, you must comply with all post-employment obligations, including those in the Employee Non-Competition, Non- Solicitation, Confidentiality and Assignment Agreement that you shall sign as a condition of employment.
iv.    The Company’s obligations to pay or provide the Severance Benefits will be contingent upon your having tendered your resignation from the Board, if applicable  (and any other boards on which you serve at the request of the Company), effective as of the date of termination.
v.    You agree to give prompt written notice of any reemployment during the Severance Period that results in eligibility for comparable medical and dental benefits. If the Company makes any overpayment of COBRA Benefits, you agree to promptly return any such overpayment to the Company. The foregoing shall not create any obligation on your part to seek reemployment after the date of termination of your employment.

245 First Street, Suite 1800, Cambridge, MA 02142        PHONE: 617-444-8550

9.    Definitions: For purposes of this letter agreement, “for Cause” shall mean the Company has complied with the “Cause Process”, as defined below, following your committing one or more of the following (each a “Cause Condition”): (i) an act of material dishonesty involving the Company, embezzlement, or misappropriation of assets or property of the Company; (ii) gross negligence or willful misconduct in connection with the performance of your duties, theft, fraud or breach of fiduciary duty to the Company; (iii) your willful, sustained, or repeated failure to substantially perform the duties or obligations of your position (other than due to illness or injury); (iv) a violation of federal or state securities law; (v) the conviction of a felony or any crime involving moral turpitude, including a plea of nolo contendere; (vi) a material breach of any of the Company’s written policies related to conduct or ethics; or (vii) a material breach of your Non-Competition, Non-Solicitation, Confidentiality and Assignment Agreement.
“Cause Process” shall mean that (i) the Company reasonably determines, in good faith, that one of the Cause Conditions has occurred; (ii) the Company notifies you in writing of the first occurrence of the Cause Condition within thirty (30) days of the Board becoming aware of such condition; (iii) the Company cooperates in good faith with your efforts, for a period not less than thirty (30) days following such notice (the “Cause Cure Period”), to remedy the Cause Condition; (iv) notwithstanding such efforts, the Cause Condition continues to exist; and (v) the Company terminates your employment within thirty (30) days after the end of the Cause Cure Period, provided that the Company will not be required to provide a Cause Cure Period in the event that a Cause Condition (x) is of the type described in clauses (iv) or (v) of the first sentence of this Section 9; (y) is incapable of being cured; or (z) is required to be publicly disclosed under applicable securities law.
If you cure to the Company’s satisfaction any Cause Condition during the applicable Cause Cure Period, Cause shall be deemed not to have occurred. If the Company is not required to provide a Cause Cure Period, the Cause Process will be satisfied if the Company notifies you in writing of the first occurrence of the Cause Condition within thirty (30) days of the Board becoming aware of such condition and terminates your employment within thirty (30) days of such notice.  You are eligible for no more than two “cure” opportunities during your employment.
“Change in Control Transaction” shall mean (i) a merger or consolidation of the Company with or into another corporation under circumstances where the stockholders of the Company immediately prior to such merger or consolidation do not own after such merger or consolidation shares representing at least fifty percent (50%) of the voting power of the Company or the surviving, resulting or parent corporation, as the case may be, (ii) a transfer of shares representing fifty percent (50%) or more of the voting power of the Company to any person who was not, on the Effective Date, a holder of stock of any class or preference or any stock option of the Company, (iii) a liquidation of the Company, or (iv) a sale or other disposition of all or substantially all of the Company’s assets.

245 First Street, Suite 1800, Cambridge, MA 02142        PHONE: 617-444-8550

“Good Reason” shall mean you have complied with the “Good Reason Process” as defined below, following the occurrence of one or more of the following events: (i) any material diminution in your duties, authority or responsibilities, (ii) any material diminution in your base compensation; (iii) the relocation of your primary place of work more than fifty (50) miles from the Company’s offices in Philadelphia, Pennsylvania or Boston Massachusetts, or (iv) the material breach by the Company of any provision of this letter agreement or any other employment-related agreement between the Company and you (as defined below).
“Good Reason Process” shall mean that (i) you reasonably determine in good faith that one of the foregoing “Good Reason” conditions has occurred; (ii) you notify the Company in writing of the first occurrence of the Good Reason condition within thirty (30) days of the first occurrence of such condition; (iii) you cooperate in good faith with the Company’s efforts, for a period not less than thirty (30) days following such notice (the “Cure Period”) to remedy the condition; (iv) notwithstanding such efforts, the Good Reason condition continues to exist; and (v) you terminate your employment within thirty (30) days after the end of the Cure Period. If the Company cures the Good Reason condition during the Cure Period, Good Reason shall be deemed not to have occurred.
“Disability” shall mean your inability (as determined by the Company in good faith) to perform the essential functions of your position due to physical or mental disability (after taking into account the Company’s obligation to provide reasonable accommodations in accordance with the Americans with Disabilities Act of 1990 or analogous state law), which continues for a period of 90 days (whether or not consecutive) during any 12-month period.  In connection with any determination regarding your possible Disability, you shall have the right to provide to the Company, and the Company shall consider in good faith, any physical or mental evaluation performed by a competent physician of your selection. 
10.    Modified Section 280G Cutback:  Notwithstanding any other provision of this letter agreement, except as set forth in Section 10.B, in the event that the Company undergoes a “Change in Ownership or Control” (as defined below), the following provisions shall apply:
		
	A.
	The Company shall not be obligated to provide to you any portion of any “Contingent Compensation Payments” (as defined below) that you would otherwise be entitled to receive to the extent necessary to eliminate any “excess parachute payments” (as defined in Section 280G(b)(1) of the Code) for you.  For purposes of this Section 10, the Contingent Compensation Payments so eliminated shall be referred to as the “Eliminated Payments” and the aggregate amount (determined in accordance with Treasury Regulation Section 1.280G-1, Q/A-30 or any successor provision) of the Contingent Compensation Payments so eliminated shall be referred to as the “Eliminated Amount.”

245 First Street, Suite 1800, Cambridge, MA 02142        PHONE: 617-444-8550

		
	B.
	Notwithstanding the provisions of Section 10.A, no such reduction in Contingent Compensation Payments shall be made if (1) the Eliminated Amount (computed without regard to this sentence) exceeds (2) 100% of the aggregate present value (determined in accordance with Treasury Regulation Section 1.280G-1, Q/A-31 and Q/A-32 or any successor provisions) of the amount of any additional taxes that would be incurred by you if the Eliminated Payments (determined without regard to this sentence) were paid to you (including, state and federal income taxes on the Eliminated Payments, the excise tax imposed by Section 4999 of the Code payable with respect to all of the Contingent Compensation Payments in excess of your “base amount” (as defined in Section 280G(b)(3) of the Code), and any withholding taxes).  The override of such reduction in Contingent Compensation Payments pursuant to this Section 10.B shall be referred to as a “Section 10.B Override.”  For purpose of this paragraph, if any federal or state income taxes would be attributable to the receipt of any Eliminated Payment, the amount of such taxes shall be computed by multiplying the amount of the Eliminated Payment by the maximum combined federal and state income tax rate provided by law.

		
	C.
	For purposes of this Section 10 the following terms shall have the following respective meanings:

i.    “Change in Ownership or Control” shall mean a change in the ownership or effective control of the Company or in the ownership of a substantial portion of the assets of the Company determined in accordance with Section 280G(b)(2) of the Code.
ii.    “Contingent Compensation Payment” shall mean any payment (or benefit) in the nature of compensation that is made or made available (under this letter agreement or otherwise) to a “disqualified individual” (as defined in Section 280G(c) of the Code) and that is contingent (within the meaning of Section 280G(b)(2)(A)(i) of the Code) on a Change in Ownership or Control of the Company.
		
	D.
	Any payments or other benefits otherwise due to you following a Change in Ownership or Control that could reasonably be characterized (as determined by the Company) as Contingent Compensation Payments (the “Potential Payments”) shall not be made until the dates provided for in this Section 10.D.  Within 30 days after each date on which you first become entitled to receive (whether or not then due) a Contingent Compensation Payment relating to such Change in Ownership or Control, the Company shall determine and notify you (with 

245 First Street, Suite 1800, Cambridge, MA 02142        PHONE: 617-444-8550

reasonable detail regarding the basis for its determinations) (1) which Potential Payments constitute Contingent Compensation Payments, (2) the Eliminated Amount and (3) whether the Section 10.B Override is applicable.  Within 30 days after delivery of such notice to you, you shall deliver a response to the Company (the “Executive Response”) stating either (A) that you agree with the Company’s determination pursuant to the preceding sentence or (B) that you disagrees with such determination, in which case you shall set forth (x) which Potential Payments should be characterized as Contingent Compensation Payments, (y) the Eliminated Amount, and (z) whether the Section 10.B Override is applicable.  In the event that you fail to deliver an Executive Response on or before the required date, the Company’s initial determination shall be final.  If you state in the Executive Response that you agree with the Company’s determination, the Company shall make the Potential Payments to you within three (3) business days following delivery to the Company of the Executive Response (except for any Potential Payments which are not due to be made until after such date, which Potential Payments shall be made on the date on which they are due).  If you state in the Executive Response that you disagree with the Company’s determination, then, for a period of sixty (60) days following delivery of the Executive Response, you and the Company shall use good faith efforts to resolve such dispute.  If such dispute is not resolved within such 60-day period, such dispute shall be settled exclusively by arbitration in Cambridge, Massachusetts, in accordance with the rules of the American Arbitration Association then in effect.  Judgment may be entered on the arbitrator’s award in any court having jurisdiction.  The Company shall, within three (3) business days following delivery to the Company of the Executive Response, make to you those Potential Payments as to which there is no dispute between the Company and you regarding whether they should be made (except for any such Potential Payments which are not due to be made until after such date, which Potential Payments shall be made on the date on which they are due).  The balance of the Potential Payments shall be made within three (3) business days following the resolution of such dispute.  
		
	E.
	The Contingent Compensation Payments to be treated as Eliminated Payments shall be determined by the Company by determining the “Contingent Compensation Payment Ratio” (as defined below) for each Contingent Compensation Payment and then reducing the Contingent Compensation Payments in order beginning with the Contingent Compensation Payment with the highest Contingent Compensation Payment Ratio.  For Contingent Compensation 

245 First Street, Suite 1800, Cambridge, MA 02142        PHONE: 617-444-8550

Payments with the same Contingent Compensation Payment Ratio, such Contingent Compensation Payment shall be reduced based on the time of payment of such Contingent Compensation Payments with amounts having later payment dates being reduced first.  For Contingent Compensation Payments with the same Contingent Compensation Payment Ratio and the same time of payment, such Contingent Compensation Payments shall be reduced on a pro rata basis (but not below zero) prior to reducing Contingent Compensation Payment with a lower Contingent Compensation Payment Ratio.  The term “Contingent Compensation Payment Ratio” shall mean a fraction the numerator of which is the value of the applicable Contingent Compensation Payment that must be taken into account by you for purposes of Section 4999(a) of the Code, and the denominator of which is the actual amount to be received by you in respect of the applicable Contingent Compensation Payment.  For example, in the case of an equity grant that is treated as contingent on the Change in Ownership or Control because the time at which the payment is made or the payment vests is accelerated, the denominator shall be determined by reference to the fair market value of the equity at the acceleration date, and not in accordance with the methodology for determining the value of accelerated payments set forth in Treasury Regulation Section 1.280G-1Q/A-24(b) or (c)). 
		
	F.
	The provisions of this Section 10 are intended to apply to any and all payments or benefits available to you under this letter agreement or any other agreement or plan of the Company under which you receive Contingent Compensation Payments.

11.    General: By signing below, you represent that you are not bound by any employment contract, restrictive covenant or other restriction preventing or limiting you from entering into employment with or carrying out your responsibilities for the Company, or which is in any way inconsistent with the terms of this letter. You also agree that you will not disclose to anyone at the Company, bring onto Company premises, or use in the course of your employment at the Company, any confidential information or trade secrets belonging to any former employer or to any other entity.
After the Effective Date, this letter (and the plans, documents, and policies referenced herein) shall constitute our entire agreement regarding the terms and conditions of your employment with the Company and shall supersede any prior agreements or other promises or statements (whether oral or written) regarding the terms of your employment or provision of services to the Company, including, without limitation, your Consulting Agreement with the Company, dated 

245 First Street, Suite 1800, Cambridge, MA 02142        PHONE: 617-444-8550

October 13, 2017. The terms described herein cannot be modified except in writing by you and the Company. Failure of either party to this letter agreement to insist upon strict compliance with any of the terms, covenants or conditions hereof will not be deemed a waiver of such terms, covenants or conditions. In the event of any inconsistency between this letter agreement and any other contract between the Company and you, including the Employee Non-Competition, Non-Solicitation, Confidentiality and Assignment Agreement, the provisions of this letter agreement will prevail.
We are thrilled to have you join the leadership team at Eleven Bio. Please contact me if you have any questions or need more information.
Sincerely,
/s/ Stephen A. Hurly
Stephen Hurly
President and Chief Executive Officer

I accept the above terms of employment as stated:
/s/ Richard F. Fitzgerald            January 23, 2018 
Richard F. Fitzgerald            Date
Enclosure:
		
	•
	Employee Non-Competition, Non-Solicitation, Confidentiality and Assignment Agreement

245 First Street, Suite 1800, Cambridge, MA 02142        PHONE: 617-444-8550

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