February 2008

18.02.2008
MTS elects a new Board of Directors

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announced the election of a new Board of Directors (BoD) by the Extraordinary General Meeting of shareholders (EGM) held earlier today.

18.02.2008
MTS announces subscriber growth numbers for January 2008

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces that its consolidated subscriber base reached 82.95 million users on January 31, 2008.

15.02.2008
MTS increases ownership in its Omsk subsidiary to 100%

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, today announced that it has acquired the remaining 9% stake in its subsidiary in Omsk.

11.02.2008
MTS and Microsoft to Work Together to Deliver Mobile Services across Russia and CIS

Companies to develop mobile services strategy to address needs of subscribers across the region

08.02.2008
MTS Connect: a user friendly solution for mobile Internet access

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, today announced the launch of MTS Connect, a mobile Internet service solution, whereby subscribers will be provided with a modem for their desktop PCs or laptops and a special tariff.

Contact investor relations:

+ 7 495 223 20 25 ir@mts.ru

MTS Investor Relations
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