June 2012

28.06.2012
Ad Hoc Notice

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” or the “Company”–NYSE: MBT), the leading telecommunications provider in Russia and the CIS, announces that Uzbekistan authorities are conducting audits of the financial and operating activities of its wholly-owned subsidiary Uzdunrobita FE LLC (MTS-Uzbekistan) and with no grounds have detained its managers. These actions are being carried out in violation of local regulations, which create risks for the continuity of MTS operations in Uzbekistan and could lead to a cessation of business activity.

27.06.2012
MTS Announces the Results of the Annual General Meeting of Shareholders

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” or the “Company” – NYSE: MBT), the leading telecommunications provider in Russia and the CIS, announces decisions reached at the Company’s Annual General Meeting of Shareholders (the “AGM”) held on June 27, 2012.

19.06.2012
MTS Proposes Candidates for Board of Directors

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” or the “Company” – NYSE: MBT), the leading telecommunications provider in Russia and the CIS, announces proposed candidates for the MTS Board of Directors to be considered for election at the Company’s Annual General Meeting of Shareholders (the “AGM”) on June 27, 2012.

04.06.2012
MTS and Vodafone Recognized for Excellence in Procurement

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the leading telecommunications provider in Russia and the CIS, announces that its joint procurement project with Vodafone, one of the world's largest mobile communications companies, has been highly commended in the prestigious international competition, The Procurement Leaders Awards 2012.

04.06.2012
MTS and Sistema to Jointly Develop Content Business

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the leading telecommunications provider in Russia and the CIS, and Sistema JSFC ("Sistema") (LSE: SSA), the largest diversified publicly-traded investment company in Russia and the CIS, announce that they have agreed to join forces in developing and managing the multimedia content portal Stream.ru (formerly Omlet.ru).

Contact investor relations:

+ 7 495 223 20 25 ir@mts.ru

MTS Investor Relations
App for iPad