May 2010

21.05.2010
MTS Announces Signing of Agreements by Comstar-UTS with Rostelecom

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” - NYSE: MBT), today announces that “COMSTAR – United TeleSystems” JSC (“Comstar” - LSE: CMST), a majority-owned subsidiary of MTS, MGTS Finance S.A., a company controlled by Comstar, and OAO Rostelecom (“Rostelecom” - RTS and MICEX: RTKM, RTKMP; OTCQX: ROSYY) have concluded agreements involving the sale of the 25%+1 share1 of OAO Svyazinvest to OAO Rostelecom for RUB 26 billion.

20.05.2010
Board Decisions on the Dividend Recommendation for the FY 2009 and the Nominees to the Board

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the leading telecommunications provider in Russia and the CIS, announces the decisions reached at the Board of Directors meeting held on May 20, 2010, on the recommended amount of dividend and the list of nominees for election to the Company’s Board.

04.05.2010
MTS Amends Terms of the Gazprombank Financing

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the leading telecommunications provider in Russia and the CIS, announces that it has successfully renegotiated the terms on its Gazprombank credit facilities.

Contact investor relations:

+ 7 495 223 20 25 ir@mts.ru

MTS Investor Relations
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