July 2008

28.07.2008
MTS CFO Vsevolod Rozanov to Lead Shyam Telelink

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces that Mr. Vsevolod Rozanov will be leaving his position as the Company’s Chief Financial Officer (CFO) to assume the duties of the President and Chief Executive Officer of Shyam Telelink Limited ("Shyam Telelink"), Sistema's telecommunications subsidiary in India.

23.07.2008
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 it has received a decision of the tax inspection for the years 2005 and 2006 for the amount of RUR 1,130 million (approximately $49 million). The Company does not agree with the findings.

18.07.2008
MTS Publishes 2007 Online Annual Review

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, today published its 2007 Annual Review.

17.07.2008
MTS announces subscriber growth numbers for June 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 86.94 million users on June 30, 2008.

10.07.2008
CEO of MTS Mikhail Shamolin Joins the Board of the GSM Association

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces that its president and chief executive, Mikhail Shamolin, joins the board of the GSM Association (GMSA), the global trade association for the mobile industry. Mr. Shamolin is appointed to the board of the GSMA as the representative of MTS.

10.07.2008
MTS, Microsoft and Fujitsu Siemens Computers Partner to Deliver Mobile Broadband to the CIS

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, Microsoft, the worldwide leader in operating systems and productivity software, and Fujitsu Siemens Computers, Europe’s leading developer of IT systems, today announced the launch of the first integrated 3G notebook solution in the CIS. The companies collaborated to deliver a 3G-enabled Fujitsu Siemens notebook running on the Microsoft Vista operating system with an embedded SIM card and a special data tariff plan from MTS.

03.07.2008
MTS and MySpace Russia Announce Partnership

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, and MySpace Russia, the local version of the leading international social network, today announced a partnership to develop and promote solutions for the subscribers of MTS Russia.

Contact investor relations:

+ 7 495 223 20 25 ir@mts.ru

MTS Investor Relations
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