February 2010

19.02.2010
MTS Wins Prestigious GSMA Global Mobile Award

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces that it has won the GSM Association’s (“GSMA”) 15th Annual Global Mobile Award at the 2010 Mobile World Congress in Barcelona. MTS won the award in the “Best Billing & Customer Care Solution” category for its “Your Individual Optimal Tariff Plan” service. MTS is the first mobile operator from Russia and the CIS to be recognized with one of the most prestigious awards in the telecommunications industry.

18.02.2010
MTS Lowers Interest Rates on Gazprombank Financing

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces that it has reached an agreement with Gazprombank to reduce the interest rates on the outstanding loans.

08.02.2010
MTS to Further Optimize its Debt Portfolio

Moscow, Russian Federation – Mobile TeleSystems OJSC (the “Company” or “MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces that it has sent an irrevocable notice to ING Bank, N.V. (London branch), the Agent of the Lenders under the syndicated loan agreement originally signed in May 2009 and amended in June 2009, regarding the voluntary prepayment of the loan.

Contact investor relations:

+ 7 495 223 20 25 ir@mts.ru

MTS Investor Relations
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