MTS services offered in Chukotka

30 January 2008

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.

Currently, the Company’s switching system in the region’s capital Anadyr can service up to 300 thousand numbers. All of the equipment meets the requirements for working under the extreme climatic conditions of the Russian north.

In the course of the year MTS plans to extend its network to Bilibino city and the Bilibinsky district. The company plans to provide services to enterprises working in the region, including oil and gas, gold mining and other industries, as well to provide coverage along the main rail lines and highways in the region. MTS is also opening a new service center in Anadyr.

"Our top priority is to take our relationship with the local subscribers to a higher level. MTS subscribers in Chukotka will now be able to take full advantage of our services: attractive tariffs to suit individual needs of every customer; innovative value-added offers with a high level of service quality and customer care, a unified payment system throughout the whole of Russia, favorable intranet roaming in all MTS regions; mobile Internet and other services," noted Vice President, Head of MTS Russia, Mikhail Shamolin.

For further information, please contact:

Mobile TeleSystems, Moscow
Investor Relations
tel: +7 495 223 2025
e-mail: ir@mts.ru

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Mobile TeleSystems OJSC (“MTS”) is the largest mobile phone operator in Russia and the CIS. Together with its subsidiaries, the Company services over 81.97 million subscribers. The regions of Russia, as well as Armenia, Belarus, Turkmenistan, Ukraine, and Uzbekistan, in which MTS and its associates and subsidiaries are licensed to provide GSM services, have a total population of more than 230 million. Since June 2000, MTS’ Level 3 ADRs have been listed on the New York Stock Exchange (ticker symbol MBT).
 
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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 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, 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, risks associated with operating in Russia and the CIS, volatility of stock price, financial risk management and future growth subject to risks.