OREANDA-NEWS. The management of Mobile TeleSystems (MTS) will be holding a conference call to discuss the Company’s First Quarter 2013 Financial and Operating Results on May 30, 2013.

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 the confirmation code, 5871163

From the US: + 1 646 254 3366

From the UK: + 44 20 3427 1913

From Russia +7 495 705 9451

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 three hours prior to the conference call at: http://www.mtsgsm.com/news/reports/.

A replay of the conference call will be available for seven days on the following telephone numbers:

From the US: +1 347 366 9565 PIN 5871163#

From the UK: +44 20 3427 0598 PIN 5871163#

From Russia: + 810 800 2870 1012 PIN 5871163#