2011

02.12.2011
MTS Launches Omlet.ru in Samsung Smart TV

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” or the “Company” – NYSE: MBT), the leading telecommunications provider in Russia and the CIS, and Samsung, the world’s leading supplier of consumer electronics, announce the launch of Samsung Smart TV sets and Blu-ray players with in-built access to multimedia entertainment portal Omlet.ru

01.12.2011
MTS Acquires 29% of MGTS Ordinary Shares

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” or the “Company” – NYSE: MBT), the leading telecommunications provider in Russia and the CIS, announces that MTS subsidiaries have completed the acquisition of a 100% stake in CJSC Sistema-Inventure (“Sistema-Inventure”), which directly owns 29% of the ordinary shares of Moscow City Telephone Network (“MGTS”). Sistema-Inventure was acquired from JSFC Sistema (“Sistema”) in accordance with the terms of indicative offer that were announced on September 06, 2011.

24.11.2011
MTS Independent Director Honored with “Director of the Year” Award

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” or the “Company” – NYSE: MBT), the leading telecommunications provider in Russia and the CIS, announces that MTS’ non-executive director Paul James Ostling has been honored with a “Director of the Year” award sponsored by the Association of Independent Directors. Mr. Ostling won in the nomination “Independent Director”.

21.11.2011
Mobile TeleSystems Announces Financial Results for the Third Quarter Ended September 30, 2011

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” - NYSE: MBT), the leading telecommunications provider in Russia and the CIS, today announces its unaudited US GAAP financial results for the three months ended September 30, 2011.

03.11.2011
Ad Hoc Notice

Moscow, Russian Federation — Mobile TeleSystems OJSC (“MTS” — NYSE: MBT), the leading telecommunications provider in Russia and the CIS, announces that the Company acquired controlling stake of Telecom Projects LLC.

25.10.2011
MTS Acquires Leading Alternative Operator in Tatarstan

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” or the “Company” – NYSE: MBT), the leading telecommunications provider in Russia and the CIS, announces that OJSC “MTS” has acquired 100% stake in OJSC “Teleradiokompania”TVT” (“TVT”) from a group of investors. TVT is a leading provider of cable TV and fixed broadband services in the republic of Tatarstan with presence in 15 cities. This acquisition allows MTS to strengthen its leadership position in Tatarstan and enter the market of pay-TV, broadband and fixed telephony services in the region.

27.09.2011
MTS Announces New Appointments

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” or the “Company” – NYSE: MBT), the leading telecommunications provider in Russia and the CIS, announces appointment of Ivan Zolochevsky to the position of General Director of Business Unit “MTS Ukraine”, who previously served as Director of the North-West Macro-Region of MTS in Russia.

15.09.2011
MTS Board Approves Acquisition of Sistema Inventure

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” or the “Company” – NYSE: MBT), the leading telecommunications provider in Russia and the CIS, announces that MTS Board of Directors has approved the acquisition by MTS subsidiaries of a 100% stake in Sistema Inventure which directly owns 29% of the voting stock of Moscow City Telephone Network (“MGTS”).

06.09.2011
Mobile TeleSystems Announces Financial Results for the Second Quarter Ended June 30, 2011

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” - NYSE: MBT), the leading telecommunications provider in Russia and the CIS, today announces its unaudited US GAAP financial results for the three months ended June 30, 2011.

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+ 7 495 223 20 25 ir@mts.ru

MTS Investor Relations
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