Exhibit 4.280  FEDERAL SERVICE FOR SUPERVISION OF COMMUNICATIONS, INFORMATION TECHNOLOGY AND MASS MEDIA  LICENSE  No. 127171 of May 10, 2015  For the provision of  communications services for the provision of communication channels  This license is granted to  Open Joint Stock Company  Mobile TeleSystems  Primary state registration number of legal entity (individual entrepreneur) (OGRN, OGRNIP)  1027700149124  Taxpayer Identification No. (INN)  7740000076


Location:  109147, 4 Marksistskaya St., Moscow  Territory of telecommunications services is specified in the annex.  This license is granted for the following term:  to May 10, 2020  This license is granted on the basis of the decision of the licensing authority - Order No. 85-pчc of February 16 2015  This license is accompanied with an annex on 2 pages, being its integral part  Deputy Head
(signature)
O.A.   Ivanov  L.S.  Seal:  MINISTRY OF COMMUNICATIONS AND MASS MEDIA OF THE RUSSIAN FEDERATION FEDERAL SERVICE FOR SUPERVISION OF COMMUNICATIONS, INFORMATION TECHNOLOGY AND MASS MEDIA OGRN 1087746736296  CN 063837


Annex to License No. 127171 **  License requirements  1. Mobile TeleSystems Open Joint-Stock Company (the Licensee) shall comply with the terms of this license.  Short name:  MTS OJSC  OGRN 1027700149124
INN 7740000076  Location:  109147, 4 Marksistskaya St., Moscow  2. The Licensee shall start provision of services under the license no later than 10.05.2015.  3. The Licensee shall provide services related to provision of communication channels within the territory of a single constituent subject of the Russian Federation, provision of communication channels beyond the territory of a single constituent subject of the Russian Federation in accordance with this license only in the territory of the the Primorye Territory.  4. The Licensee under this License shall provide users with the possibility of transmission of electronic messages via communication channels formed by transmission lines of the Licensees communication network *.  5. The Licensee is required in the delivery of services in accordance with this license to fulfill the conditions set out for allocation of radio frequency bands and assignment of radio frequency band or radio frequency channel.  6. The Licensee shall implement requirements for networks and communications facilities established by the federal executive authority in the field of communications in consultation with the authorized state bodies engaged in investigative activities for the purpose of carrying out investigation operations, and to take measures to prevent disclosure of organizational and tactical methods of the above operations.  1


7. The Licensee shall provide information about the basis of calculation of mandatory deductions (tax payments) to the universal service reserve in the manner and form required by the federal executive authority in the field of communications.  
 * Provision of services under the license can be accompanied by the provision of other services, technologically closely related to communications services for the provision of communication channels and aimed at improvement of their customer value, unless it requires a separate license.  ** This licence is given to prolongate the term of the Licence No 73005 dated May 10, 2010.  2


Laced, numbered and sealed Three (3) sheet (s).  Head of the department of registers of assigned radio frequencies and licenses in the field of communication (signature)   I.Yu. ZavidnayaMarch 2,   2015  Seal:  MINISTRY OF COMMUNICATIONS AND MASS MEDIA OF THE RUSSIAN FEDERATION FEDERAL SERVICE FOR SUPERVISION OF COMMUNICATIONS, INFORMATION TECHNOLOGY AND MASS MEDIA OGRN 1087746736296  122527