November 2007

30.11.2007
MTS challenges Isle of Man court decision to decline jurisdiction

Moscow, Russian Federation — Mobile TeleSystems OJSC («MTS» — NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces that its Isle of Man subsidiaries («the Isle of Man Companies») are appealing the decision of an Isle of Man court to decline jurisdiction over their claim for the unlawful seizure of Kyrgyz mobile operator, Bitel LLC («Bitel»).

27.11.2007
Enjoy your holiday to the full and pay only half the price!

MTS gives you more possibilities to share your most exciting moments and emotions during the winter holidays. No need to switch off your mobile phone abroad and limit your communications!

20.11.2007
Financial results for the third quarter ended September 30, 2007

Moscow, Russian Federation — Mobile TeleSystems OJSC («MTS» — NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces its third quarter1 2007 financial and operating results.

15.11.2007
MTS announces subscriber growth numbers for October 2007

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 79.12 million users on October 31, 2007.

13.11.2007
Third quarter 2007 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 2007 Financial and Operating Results on Tuesday, November 20, 2007.

13.11.2007
MTS announces the date of the Extraordinary General Meeting of shareholders

Moscow, Russian Federation — Mobile TeleSystems OJSC («MTS» — NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces the date of the Extraordinary General Meeting of shareholders (EGM).

Contact investor relations:

+ 7 495 223 20 25 ir@mts.ru

MTS Investor Relations
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