OREANDA-NEWS. August 20, 2010. The management of Mobile TeleSystems (MTS) will be holding a conference call to discuss the Company’s Second Quarter 2010 Financial and Operating Results on Thursday, August 26, 2010.

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, 4352951:

From the US:                       +   1 480 629 9846

From the UK:                      + 44 207 190 1292

International:                       + 44 207 190 1292

The conference call will also be available at: http://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: http://www.mtsgsm.com/news/reports/.

A replay of the conference call will be available on the following telephone numbers from August 26 (from approximately 23:00 hrs Moscow time/20:00 hrs London time/15:00 hrs US Eastern time) to September 5, 2010:

From the US:                       +  1 303 590 3030                             PIN 4352951#

From the UK:                       + 44 207 154 2833                            PIN 4352951#    

International:                       + 44 207 154 2833                            PIN 4352951#