August 2012

31.08.2012
Ad Hoc Notice

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the leading telecommunications operator in Russia and the CIS, announces that the Judicial Department of Tashkent, in accordance with a decree of the General Prosecutor’s Office of the Republic of Uzbekistan, has initiated enforcement proceedings to arrest all of the assets of Uzdunrobita FE LLC (“Uzdunrobita” or “MTS-Uzbekistan”), MTS’s wholly owned subsidiary in Uzbekistan.

29.08.2012
MTS to Launch LTE MVNO on Scartel’s Network in Kazan

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” or the “Company” – NYSE: MBT), the leading telecommunications provider in Russia and the CIS, announces the signing of an agreement with Scartel LLC (Yota Networks) to launch an LTE MVNO on Scartel’s network in Kazan.

28.08.2012
Mobile TeleSystems Announces Financial Results for the Second Quarter Ended June 30, 2012

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 ended June 30, 2012.

27.08.2012
MTS Enters the Fixed-Line Market in the Republic of Mari El

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” or the “Company” – NYSE: MBT), the leading telecommunications provider in Russia and the CIS, announces that the Company has acquired from a private investor a 100% stake in in LLC “Intercom” (“Intercom”), a leader in the cable TV and fixed broadband market in Volzhsk, the second largest city in the Republic of Mari El. The purchase price amounts to 90 million rubles.

23.08.2012
Ad Hoc Notice

Moscow, Russian Federation — Mobile TeleSystems OJSC (“MTS” — NYSE: MBT), the leading telecommunications provider in Russia and the CIS, announces completion of the dividend payment for the full year 2011.

20.08.2012
MTS Acquires Alternative Operator in Belgorod

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” or the “Company” – NYSE: MBT), the leading telecommunications provider in Russia and the CIS, announces that the Company has acquired a 100% stake in LLC “Elf” and a 100% stake in LLC “Efcom” operating under “Elf” brand (“Elf”) from a private investor. The purchase price amounts to 220 million rubles.

13.08.2012
Ad Hoc Notice

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the leading telecommunications operator in Russia and the CIS, announces that on August 13, 2012, the Tashkent Commercial Court granted petition of the State Agency for Communications and Information of Uzbekistan (“SACI”, the “Regulator”) to withdraw all operating licenses of Uzdunrobita FE LLC (“Uzdunrobita” or “MTS-Uzbekistan”), MTS’s wholly owned subsidiary in Uzbekistan. Uzdunrobita intends to appeal the decision within the timeframe set forth by the laws of the Republic of Uzbekistan.

09.08.2012
Ad Hoc Notice

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the leading telecommunications operator in Russia and the CIS, announces that the State Agency for Communications and Information of Uzbekistan (“SACI”, the “Regulator”) filed a petition to the Tashkent Commercial Court to withdraw all operating licenses of Uzdunrobita FE LLC (“Uzdunrobita” or “MTS-Uzbekistan”), MTS’s wholly owned subsidiary in Uzbekistan.

08.08.2012
Ad Hoc Notice

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the leading telecommunications operator in Russia and the CIS, announces that from August 06, 2012 till August 07, 2012, 16 regional antimonopoly departments of the Republic of Uzbekistan simultaneously held hearings and declared that Uzdunrobita FE LLC (“Uzdunrobita” or “MTS-Uzbekistan”), MTS’s wholly owned subsidiary in Uzbekistan, violated antimonopoly laws, consumer protection laws and laws governing advertisements. In total, the claims of the antimonopoly regulator against Uzdunrobita amount to approximately $80 million. The Company will appeal the aforementioned decisions in accordance with the procedures set forth by the laws of the Republic of Uzbekistan.

02.08.2012
Ad Hoc Notice

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the leading telecommunications operator in Russia and the CIS, announces that the Prosecutor’s General Office of Uzbekistan and the State Agency for Communications and Information of Uzbekistan (the “SACI”) are preparing to bring groundless charges of “engaging in activity without a license” and “illegal activities of the branches without individual licenses” against Uzdunrobita FE LLC (“Uzdunrobita”, “MTS-Uzbekistan”), MTS’s wholly owned subsidiary in Uzbekistan”. These charges contradict official documents, including documents issued earlier to Uzdunrobita by the SACI.

Contact investor relations:

+ 7 495 223 20 25 ir@mts.ru

MTS Investor Relations
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