VivaCell-MTS, a subsidiary of “Mobile TeleSystems” OJSC, is glad to announce that those, who buy MTS, HTC, BlackBerry, Samsung Galaxy Nexus or Samsung Google Nexus S phones from VivaCell-MTS service centers from May 14 till June 10, 2012, can take part in a special draw and win valuable prizes, including: • HTC Flyer tablet, • BlackBerry Bold 9700 smartphone, • Samsung Google Nexus S smartphone, • MTS Ego smartphone, • MTS Touch 551 phone, • “MTS Connect Diamond” USB modem. And the luckiest will get the main prize – a trip for two to the country, which will win the 2012 European football championship. For more information one can visit www.vivacell.am, contact 111 free of charge hotline, chat with us through “111 Online”, or approach one of our service centers across Armenia. VivaCell-MTS (K-Telecom CJSC) is Armenia’s leading mobile operator, having the widest 2G/3.75G/4G network reach and spreading a wide range of Voice and Data services all across Armenia. Having the best of the Armenian people interest at heart since its launch on 1st July 2005 and in a short period of time VivaCell-MTS has managed to build a nationwide network and a considerable customer base. VivaCell-MTS drives innovation and aims at always being at the forefront of any development serving the Armenian mobile communications market. For more information, visit www.vivacell.am * * * Mobile TeleSystems OJSC ("MTS") is the leading telecommunications group in Russia, Eastern Europe and Central Asia, 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, Uzbekistan, Armenia and Belarus, a region that boasts 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). Additional information about the MTS Group can be found at www.mtsgsm.com.

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