Mobile Content Russia

MTS Mobile TeleSystems OJSC ("MTS" - NYSE: MBT), the largest cellular operator in Russia and CIS, announces that its consolidated subscriber base reached 80.21 million users on November 30, 2007. During November 2007, MTS' consolidated subscriber base increased by 1.09 million subscribers.

Mobile TeleSystems OJSC, the largest mobile phone operator in Russia and the CIS, together with NetCracker Technology, announced today that they have completed the production deployment of the NetCracker solution in Moscow and Central Russia. The solution, based on the NetCracker product suite, will optimize infrastructure and inventory management processes and establish a central information source for the planning, design, and management of the MTS network.

Mobile TeleSystems, the largest mobile phone operator in Russia and the CIS, announces that it has acquired 100% of Bashcell, a mobile phone operator in Russia's Volga region. MTS acquired a 100% stake in Bashcell from Bashneft and local private companies for $38 million, a sum that includes the assumption of $32 million in debt. «The acquisition helps MTS to further solidify its leading position in Bashkortostan by increasing its market share to 39%.

The largest mobile operator in Russia and CIS Mobile TeleSystems OJSC (MTS) receives the highest grade in the National Purchases Transparency Rating, an annual rating organized by the National Association of Electronic Trade Participants and supported by the Federal Antitrust Agency and State Duma Counter Corruption Commission. The purpose of the rating is to evaluate the level of transparency and efficiency of the purchasing process of state, municipal, and corporate structures in Russia.

Moscow, Russian Federation - Mobile TeleSystems OJSC ("MTS" - NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces that its Isle of Man subsidiaries ("the Isle of Man Companies") are appealing the decision of an Isle of Man court to decline jurisdiction over their claim for the unlawful seizure of Kyrgyz mobile operator, Bitel LLC ("Bitel").

Mobile TeleSystems OJSC ("MTS" - NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces its third quarter1 2007 financial and operating results.

Moscow, Russian Federation - Mobile TeleSystems OJSC ("MTS" - NYSE:MBT), the largest mobile phone operator in Russia and the CIS, announces that its consolidated subscriber base reached 79.12 million users on October 31, 2007. During October 2007, MTS consolidated subscriber base increased by 1.15 million subscribers. More details you can find here.

Moscow, Russian Federation - Mobile TeleSystems OJSC ("MTS" - NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces that Moodys Investors Service has upgraded the corporate family and existing bond ratings of MTS to Ba2 from Ba3. The outlook on the ratings is positive.

Moscow, Russian Federation - Mobile TeleSystems OJSC ("MTS" - NYSE: MBT), the largest mobile phone operator in Russia and the CIS, announces allocation of frequencies to offer 3G (UMTS) services in Armenia. The Public Services Regulatory Commission of the Republic of Armenia has allocated the frequencies to K-Telecom, MTS' 80%-owned subsidiary (K-Telecom was acquired by MTS in September 2007). These frequencies will allow MTS to offer high-speed mobile voice and data services throughout the territory of Armenia. The allocation is valid for a 10-year period.