October 2008

22.10.2008
MTS Announces the Decision of its Board of Directors

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces the decision of its Board of Directors regarding the rouble-denominated bond placements scheduled for October 23 and 28, 2008.

21.10.2008
MTS Announces the Date of its Third Rouble Bond Placement

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces that the placement of its third rouble bond is scheduled for October 28, 2008.

20.10.2008
MTS Announces the Date of its Rouble Bond Placement

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces that the placement of its second rouble bond is scheduled for October 23, 2008.

17.10.2008
MTS joins Mobile Marketing Association

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces that it became the first and only Russian company to join the Mobile Marketing Association (MMA).

17.10.2008
MTS announces subscriber growth numbers for September 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 87.57 million users on September 30, 2008.

16.10.2008
MTS wins prestigious Best Investor Relations Award

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces that it was named the winner of the Best Investor Relations by a Russian Company Award at the 10th annual IR Magazine Continental Europe Awards 2008 held on October 15, 2008, in Amsterdam, Netherlands.

07.10.2008
MTS launches 3G in Uzbekistan

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces the launch of a test zone of its UMTS (3G) network in Uzbekistan and technical readiness for commercial launch in late 2008.

03.10.2008
MTS’ Extraordinary General Meeting Results

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces the decisions of the Extraordinary General Meeting of Shareholders (EGM) held earlier today.

02.10.2008
MTS to Bring iPhone™ 3G to Russia on October 3

Moscow, Russian Federation– Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, today announced that it will launch iPhone™ 3G in Russia on October 3.

Contact investor relations:

+ 7 495 223 20 25 ir@mts.ru

MTS Investor Relations
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