March 2012

23.03.2012
MTS Partners with Samsung in Mobile Retail

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the leading telecommunications provider in Russia and the CIS, and Samsung Electronics announce the signing of an agreement to cooperate on retail projects, equipment sales and telecommunication services in Russia.

12.03.2012
Mobile TeleSystems Announces Financial Results for the Fourth Quarter and Full Year Ended December 31, 2011

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” - NYSE: MBT), the leading telecommunications provider in Russia and the CIS, today announces its unaudited US GAAP financial results for the three months and full year ended December 31, 2011.

06.03.2012
Ad Hoc Notice

Moscow, Russian Federation — Mobile TeleSystems OJSC (“MTS” — NYSE: MBT), the leading telecommunications provider in Russia and the CIS, announces that on March 05, 2012, the Moscow Arbitrazh Court terminated bankruptcy proceedings against MTS initiated by one of its former dealers, Lotsman Management Group LLC (“Lotsman”), in connection with a commercial dispute in the amount of 17 million rubles relating to dealer commissions allegedly owed to Lotsman by MTS. The proceedings were terminated when a bank used by MTS was served with an enforcement order relating to the aforementioned amount.

Contact investor relations:

+ 7 495 223 20 25 ir@mts.ru

MTS Investor Relations
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