Ad Hoc Notice

16 January 2013

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the leading telecommunications operator in Russia and the CIS, announces that Uzdunrobita FE LLC, MTS’s wholly-owned subsidiary in Uzbekistan (“Uzdunrobita”, "MTS-Uzbekistan"), has filed a petition to declare bankruptcy in the Tashkent Commercial Court.

In accordance with the laws of the Republic of Uzbekistan, a petition to declare bankruptcy was filed due to Uzdunrobita’s inability to fulfill obligations pursuant to the verdict of the Tashkent City Criminal Court from September 17, 2012, in relation to the criminal case against Uzdunrobita's employees and to the decision of the Appeals Court of the Tashkent City Criminal Court from November 08, 2012, which determined the total amount of fines and penalties to be paid by Uzdunrobita to be at approximately $600 million.

In accordance with the court verdict of the Appeals Court of the Tashkent City Criminal Court from November 08, 2012, funds in the amount of approximately $150 million have already been recovered by law enforcement agencies from Uzdunrobita’s bank accounts.

Uzdunrobita continues to defend its rights in accordance with the laws of the Republic of Uzbekistan. MTS also reserves the right to use all legal options in the international arena in order to claim damages incurred as a result of an unwarranted attack on its subsidiary in Uzbekistan.

MTS has determined that a portion of its long-lived assets attributable to Uzbekistan was impaired and has recorded an impairment charge of $579 million in the consolidated statement of operations for the three months ended June 30, 2012. In addition, MTS has provided for tax, anti-monopoly and other liabilities that management believes are probable to result from the various legal proceeding currently ongoing in Uzbekistan in the amount of $500 million.

For further information, please contact in Moscow:

Joshua B. Tulgan
Director, Investor Relations
Acting Director, Corporate Finance

Department of Investor Relations
Mobile TeleSystems OJSC
Tel: +7 495 223 2025
E-mail: ir@mts.ru

Learn more about MTS. Visit the official blog of the Investor Relations Department at www.mtsgsm.com/blog/

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Mobile TeleSystems OJSC ("MTS") is the leading telecommunications group in Russia and the CIS, offering mobile and fixed voice, broadband, pay TV as well as content and entertainment services in one of the world's fastest growing regions. Including its subsidiaries, the Group services over 100 million mobile subscribers. The Group has been awarded GSM licenses in Russia, Ukraine, Turkmenistan, Armenia and Belarus, a region that boasts a total population of more than 200 million. Since June 2000, MTS' Level 3 ADRs have been listed on the New York Stock Exchange (ticker symbol MBT). Additional information about the MTS Group can be found at www.mtsgsm.com.

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Some of the information in this press release may contain projections or other forward-looking statements regarding future events or the future financial performance of MTS, as defined in the safe harbor provisions of the U.S. Private Securities Litigation Reform Act of 1995. You can identify forward looking statements by terms such as “expect,” “believe,” “anticipate,” “estimate,” “intend,” “will,” “could,” “may” or “might,” and the negative of such terms or other similar expressions. We wish to caution you that these statements are only predictions and that actual events or results may differ materially. We do not undertake or intend to update these statements to reflect events and circumstances occurring after the date hereof or to reflect the occurrence of unanticipated events. We refer you to the documents MTS files from time to time with the U.S. Securities and Exchange Commission, specifically the Company’s most recent Form 20-F. These documents contain and identify important factors, including those contained in the section captioned “Risk Factors” that could cause the actual results to differ materially from those contained in our projections or forward-looking statements, including, among others, the severity and duration of current economic and financial conditions, including volatility in interest and exchange rates, commodity and equity prices and the value of financial assets; the impact of Russian, U.S. and other foreign government programs to restore liquidity and stimulate national and global economies, our ability to maintain our current credit rating and the impact on our funding costs and competitive position if we do not do so, strategic actions, including acquisitions and dispositions and our success in integrating acquired businesses, potential fluctuations in quarterly results, our competitive environment, dependence on new service development and tariff structures, rapid technological and market change, acquisition strategy, risks associated with telecommunications infrastructure, governmental regulation of the telecommunications industries and other risks associated with operating in Russia and the CIS, volatility of stock price, financial risk management and future growth subject to risks.

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Contact us:

+ 7 495 223 20 25 ir@mts.ru