2006

29.11.2006
Financial Results for the Third Quarter Ended September 30, 2006

MOSCOW, RUSSIAN FEDERATION – NOVEMBER 29, 2006 – MOBILE TELESYSTEMS OJSC (“MTS” - NYSE: MBT), THE LARGEST MOBILE PHONE OPERATOR IN RUSSIA AND THE CIS, ANNOUNCES ITS THIRD QUARTER 2006 FINANCIAL AND OPERATING RESULTS.

05.09.2006
Financial Results for the Second Quarter Ended June 30, 2006

MOSCOW, RUSSIAN FEDERATION — SEPTEMBER 5, 2006 — MOBILE TELESYSTEMS OJSC («MTS» — NYSE: MBT), THE LARGEST MOBILE PHONE OPERATOR IN RUSSIA AND THE CIS, TODAY ANNOUNCES ITS SECOND QUARTER 2006 FINANCIAL AND OPERATING RESULTS.

15.06.2006
Financial Results for the First Quarter Ended March 31, 2006

Moscow, Russian Federation — June 15, 2006 — Mobile TeleSystems OJSC («MTS» — NYSE: MBT), the largest mobile phone operator in Russia and the CIS, today announces its first quarter 2006 financial and operating results.

27.03.2006
Financial Results for the Fourth Quarter and Full-Year Ended December 31, 2005

Moscow, Russian Federation – March 27, 2006 – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, today announces its fourth quarter and full-year 20051 financial and operating results.

Contact investor relations:

+ 7 495 223 20 25 ir@mts.ru

MTS Investor Relations
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