August 2000

30.08.2000
Mobile TeleSystems OJSC and Schlumberger Industries CJSC Announce A Large-Scale Agreement

MTS is ready for further substantial growth in its customer base Moscow, Russia, August 30, 2000 — Mobile TeleSystems OJSC (NYSE: MBT) (“MTS”), a leading Russian provider of GSM 900/1800 mobile cellular communication services, announced today that it has signed a large-scale agreement with Schlumberger Industries CJSC for supply of SIM-cards.

29.08.2000
Mobile TeleSystems and Port.ru announce strategic partnership

Moscow, Russia — August 29, 2000 — Mobile TeleSystems (NYSE: MBT), a leading Russian provider of GSM 900/1800 mobile cellular communication services, and Port.ru, a leading Russian Internet company, today announced their agreement to develop WAP technologies in Russia.

18.08.2000
Mobile TeleSystems OJSC presents its new sales office in Moscow

A mobile phone from MTS creates the atmosphere of prestige If you want to be beautiful — get connected! Moscow, August 18, 2000 — Mobile TeleSystems OJSC [NYSE: MBT], Russia’s leading GSM 900/1800 mobile cellular operator, presented its new sales office in the Western Municipal Area of Moscow. The new office was opened on July 27, 2000 and is located on the first floor of the unique shopping center for perfumery and cosmetics — Arbat Prestige in Ochakovo.

17.08.2000
Mobile TeleSystems OJSC announces registration of its securities issurance report by the russian federal securities commission

Moscow, Russia — August 17, 2000 — Mobile TeleSystems [NYSE: MBT], a leading provider of mobile cellular telephone services in Russia, today announced the completion of its Initial Public Offering and the registration of its securities issurance report by the Federal Securities Commission of the Russian Federation on August 11, 2000. The offering resulted in the placement of 358,798,698 common shares by MTS.

17.08.2000
Mobile TeleSystems reports first-half year 2000 financial results

MTS customer base more than doubled during the first half of 2000. Moscow, Russia, August 17, 2000 — Mobile TeleSystems OJSC (NYSE: MBT), Russia’s leading provider of GSM-900/1800 based mobile cellular communications services, today announced that it more than doubled the number of its subscribers during the first half of 2000, and reported its half-year results for the period ending June 30, 2000.

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+ 7 495 223 20 25 ir@mts.ru

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