November 2008

27.11.2008
MTS Launches 3G Networks in Chelyabinsk and Irkutsk

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces the launch of 3G networks in Chelyabinsk and Irkutsk, bringing the total count of cities to 10.

19.11.2008
MTS Announces Subscriber Growth Numbers for October 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 88.47 million users on October 31, 2008.

13.11.2008
Mobile TeleSystems Announces Financial Results for the Third Quarter Ended September 30, 2008

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” - NYSE: MBT), today announces its unaudited consolidated US GAAP financial results for the three months ended September 30, 2008.

06.11.2008
Third quarter 2008 financial results announcement and conference call

The management of Mobile TeleSystems (MTS) will be holding a conference call to discuss the Company’s Third Quarter 2008 Financial and Operating Results on Thursday, November 13, 2008.

Contact investor relations:

+ 7 495 223 20 25 ir@mts.ru

MTS Investor Relations
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