March 2003

31.03.2003
Spring is coming! Give the way to spring!

Moscow Directory Service is pleased to announce you the launch of the campaign “Spring is coming!!! Give the way to spring!!!”

17.03.2003
07.03.2003
MTS Becomes Owner of a Controlling Stake in UMC

Moscow, Russian Federation — March 7, 2003 — Mobile TeleSystems OJSC (“MTS” — NYSE: MBT), the largest mobile cellular operator in Russia and Central and Eastern Europe today announces that it has become the owner of a controlling stake in Ukrainian Mobile Communications (UMC).

03.03.2003
Mobile TeleSystems Receive a License for Samara Region

Moscow, Russian Federation — March 3, 2003 — Mobile TeleSystems OJSC (“MTS” — NYSE: MBT), the largest mobile cellular operator in Russia and Central and Eastern Europe today announces that it has received a license issued by the Ministry of Communications to provide GSM 900/1800 cellular services in the Samara region.

Contact investor relations:

+ 7 495 223 20 25 ir@mts.ru

MTS Investor Relations
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