December 2008

29.12.2008
Ruling on the Tax Review Decision for the Years 2005 and 2006

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS announces that the Moscow Arbitrage Court ruled against the tax claims for the years 2005 and 2006 in the amount of RUR 0.98 billion.

24.12.2008
MTS Brand Coming to India

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, and Shyam Telelink Limited ("Shyam Telelink"), JSFC Sistema's telecommunications subsidiary in India, announces the agreement to allow Shyam Telelink to use MTS brand in India.

18.12.2008
MTS announces subscriber growth numbers for November 2008

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces that that its consolidated subscriber base reached 89.68 million users on November 30, 2008.

16.12.2008
MTS Appoints new Chief Commercial Officer and the Global Brand Chief

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces the appointment of Mr. Mikhail Gerchuk as the new Vice President and Chief Commercial Officer (CCO) of the Company. Ms. Cynthia Gordon, the former CCO, will serve as the Global Brand Chief.

02.12.2008
MTS is Successful in its Isle of Man Court Appeal

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces that it has successfully appealed the decision of an Isle of Man court to decline jurisdiction over their claim for the unlawful seizure of Kyrgyz mobile operator, Bitel LLC.

Contact investor relations:

+ 7 495 223 20 25 ir@mts.ru

MTS Investor Relations
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