Exhibits 4.99  ARCH DIGITAL HOLDINGS LIMITED c/o ARC Advisors (HK) Limited 13/F, St. Johns Building 33 Garden Road Central, Hong Kong  CAPITAL ALLY INVESTMENTS LIMITED 48/F, Bank of China Tower 1 Garden Road Central, Hong Kong  June 30th, 2010  FUNTALK CHINA HOLDINGS LIMITED 21/F, Block D The Place Tower No. 9 Guanghua Road, Chaoyang District Beijing, China 100020 Attention: Mr. Kuo Zhang  PYPO DIGITAL COMPANY LIMITED Cricket Square, Hutchins Drive PO Box 2681 Grand Cayman, KY1-1111 Cayman Islands Attention: Mr. Kuo Zhang  BEIJING PYPO TECHNOLOGY GROUP COMPANY LIMITED South 3/F, Chang An XingRong Center No. 1 NaoShiKou Street XiCheng District Beijing, PRC Attention: Mr. Kuo Zhang  PYPO HOLDINGS (HK) COMPANY LIMITED 48/F, Bank of China Tower 1 Garden Road Central Hong Kong Attention: Mr. Kuo Zhang  Re: Waiver of earn-out rights  Ladies and Gentlemen:  Reference is made to Section 5.2(b) of
that certain Agreement and Plan of Merger, Conversion and Share Exchange dated
as of September 5, 2008, as amended by Amendment No. 1 dated as of January 6,
2009 and further amended by Amendment No. 2 dated as of June 16,
2009, by and among MIDDLE KINGDOM ALLIANCE CORP., a corporation incorporated in  1


the State of Delaware, USA (Middle
Kingdom), MK ARIZONA CORP., a corporation incorporated in the State
of Arizona, USA and a wholly-owned subsidiary of Middle Kingdom, PYPO DIGITAL
COMPANY LIMITED, an exempted limited company incorporated in the Cayman Islands
(Pypo Cayman), PYPO HOLDINGS (HK)
COMPANY LIMITED, a company incorporated in Hong Kong and a wholly owned
subsidiary of Pypo Cayman, BEIJING PYPO TECHNOLOGY GROUP COMPANY LIMITED, a
limited liability company established in the PRC and an indirect wholly owned
subsidiary of Pypo Cayman, ARCH DIGITAL HOLDINGS LIMITED, a company
incorporated in the British Virgin Islands, and CAPITAL ALLY INVESTMENTS
LIMITED, a company incorporated in the British Virgin Islands (the Merger Agreement). Unless otherwise defined in this Waiver
Letter (Waiver letter), all capitalized terms
herein shall have the meanings given to such terms in the Merger Agreement.  The undersigned hereby irrevocably consent and
agree that, notwithstanding the provisions of Section 5.2(b) of the
Merger Agreement, each of the undersigned hereby waives (i) any and all
rights to receive the Earn-Out Shares pursuant to Section 5.2(b) of
the Merger Agreement and (ii) any other right under the Merger Agreement,
any other agreement, constitutional document or applicable law with respect to
the Earn-Out Shares.  This Waiver Letter is effective as of the date
hereof. Neither this Waiver Letter nor any provision hereof may be modified,
waived, discharged, or terminated unless by an instrument in writing executed
by the parties hereto.  The terms and conditions of this Waiver Letter
shall inure to the benefit of and be binding upon the parties hereto and the
respective successors and assigns of the parties which are permitted assigns of
such party under the Merger Agreement.  This Waiver Letter shall be governed by, and
construed in accordance with, the laws of the State of New York regardless of
the laws that might otherwise govern under applicable principles of conflicts
of laws thereof.  Any dispute between the parties hereto regarding
this Waiver Letter shall be resolved in accordance with the dispute resolution
provisions of the Merger Agreement.  This Waiver Letter may be executed in one or more
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.  [SIGNATURE
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If
the foregoing is in accordance with your understanding and agreement, please
sign where indicated below and return a copy hereof to us at your earliest
convenience.   Very
  truly yours,ARCH DIGITAL HOLDINGS LIMITEDBy:
  /s/ Clement KwongName:
  Clement KwongTitle:
  DirectorCAPITAL ALLY INVESTMENTS LIMITEDBy:
  /s/ Kam YuenName:
  Kam YuenTitle:
  DirectorAcknowledged
  and Agreed:FUNTALK CHINA HOLDINGS LIMITEDBy:
  /s/ Kuo ZhangName:
  Kuo ZhangTitle:
  Chairman of the Board of DirectorsPYPO DIGITAL COMPANY LIMITEDBy:
  /s/ Kuo ZhangName:
  Kuo ZhangTitle:
  DirectorBEIJING PYPO TECHNOLOGY GROUP COMPANY LIMITEDBy:
  /s/ Kuo ZhangName:
  Kuo ZhangTitle:
  Chairman of the Board of Directors  Signature
Page to Waiver Letter


PYPO HOLDINGS (HK) COMPANY LIMITEDBy:
  /s/ Kuo ZhangName:
  Kuo ZhangTitle:
  Director  Signature
Page to Waiver Letter