30 March 2011

The management of Mobile TeleSystems (MTS) will be holding a conference call to discuss the Company’s Fourth Quarter and Full Year 2010 Financial and Operating Results on Tuesday, April 5, 2011.

Please note that the conference call will start at:

18:00 hrs (Moscow time)
15:00 hrs (London time)
10:00 hrs (US Eastern time)

To take part in the conference call, please dial one of the following telephone numbers and quote either the Company’s name, MTS, or the conference ID, 4427579:

The conference call will also be available at: https://www.mtsgsm.com/news/reports/ via audio webcast.

The earnings release will be posted approximately three hours prior to the conference call and the management’s slide presentation will be posted approximately one hour prior to the conference call at: https://www.mtsgsm.com/news/reports/.

A replay of the conference call will be available on the following telephone numbers from April 5 (from approximately 23:00 hrs Moscow time/20:00 hrs London time/15:00 hrs US Eastern time) to April 12, 2011: