January 2008

31.01.2008
MTS completes redemption of $400 million Eurobond

Moscow, Russian Federation — Mobile TeleSystems OJSC («MTS» — NYSE: MBT), the largest mobile phone operator in Russia and the CIS, today announced the redemption of its $400 million Eurobond which matured on January 30, 2008.

30.01.2008
MTS services offered in Chukotka

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announced that it has increased its service portfolio using the GSM 900/1800 standard in the Chukotka region in the Far East of Russia.

28.01.2008
MTS announces a new appointment

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces the appointment of Mr. Andrei Dubovskov as the new Director General of Business unit “MTS Ukraine.”

25.01.2008
MTS – first in Russia to be nominated by the GSMA

Moscow, Russian Federation — Mobile TeleSystems OJSC («MTS» — NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces that it has become the first Russian company to receive a nomination in the upcoming 13th Annual Global Mobile Awards hosted by the GSM Association (GSMA). MTS has been recognized for its WAP-portal — wap.kids.mts.ru — designed specifically for children in the «Best Mobile Infotainment Portal for News/Entertainment» category.

23.01.2008
MTS implements Comverse online billing

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces the implementation in Russia of Comverse Real-Time Billing (RTBS) with online billing capability as part of the Company’s strategy of harmonizing IN-platform suppliers.

22.01.2008
MTS announces subscriber growth numbers for December 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 81.97 million users on December 31, 2007.

Contact investor relations:

+ 7 495 223 20 25 ir@mts.ru

MTS Investor Relations
App for iPad