December 2009

24.12.2009
MTS Acquires Eurotel

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces that it has acquired a 100% stake in OAO Eurotel (Eurotel), one of the leading federal transit operators in Russia, from Mortfield Holdings Limited (Cyprus).

24.12.2009
MTS Increases Ownership Stake in COMSTAR-UTS and MGTS

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces that it has acquired through an exchange of shares an 11.06% stake in COMSTAR – United TeleSystems (“COMSTAR-UTS” – LSE: CMST), a leading supplier of integrated telecommunication solutions in Russia and the CIS, and indirectly an additional 14.20% stake in OAO Moscow City Telephone Network (MGTS), Moscow’s incumbent fixed-line telecommunications operator.

24.12.2009
MTS Announces Subscriber Growth Numbers for November 2009

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 97.11 million users on November 30, 2009.

09.12.2009
MTS Secures Financing from SINOSURE

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces that it has entered into a credit facility in the amount of up to $212.5 million backed by China Export and Credit Insurance Corporation (SINOSURE) to be used for the development of the Company’s mobile networks through purchases of equipment from Huawei, a leader in providing next-generation telecommunications network solutions for operators around the world.

07.12.2009
MTS Secures Financing from EDC

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces that it has entered into a credit facility in the amount of up to $165 million backed by Export Development Canada (EDC) to be used for the development of the Company’s mobile networks.

Contact investor relations:

+ 7 495 223 20 25 ir@mts.ru

MTS Investor Relations
App for iPad