OREANDA-NEWS. November 16, 2011. The management of Mobile TeleSystems (MTS) will be holding a conference call to discuss the Company’s Third Quarter 2011 Financial and Operating Results on Monday, November 21, 2011.

Please note that the conference call will start at:

17:30 hrs (Moscow time)

13:30 hrs (London time)

08:30 hrs (US Eastern time)

The change in the timing of the conference call is due to Russia cancelling shifting to Winter time.

To take part in the conference call, please dial one of the following telephone numbers, quoting the Company’s name, MTS, or the conference ID, 4488322:

From the US:    + 1 480 629 9656

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 and the management’s slide presentation will be posted approximately two and a half hours 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 November 21, 2011(from approximately 23:00 hrs Moscow time/19:00 hrs London time/14:00 hrs US Eastern time) to November 28, 2011:

From the US:        + 1 303 590 3030              PIN 4488322 #

From the UK:       + 44 207 154 2833            PIN 4488322 #

International:         + 44 207 154 2833            PIN 4488322 #.