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. As of November 2010, the company has serviced 106.3 mln mobile subscribers. MTS, its associates and subsidiaries have operations in Russia, Ukraine, Uzbekistan, Turkmenistan, Armenia and Belarus, a region that boasts a total population of more than 230 million, providing services under the MTS, Comstar and MGTS brands.

MTS’ Level 3 ADRs have been listed on the New York Stock Exchange since June 2000 (ticker symbol MBT).