January 2004

Test launch of GPRS-roaming is extended!

Ladies and gentlemen! MTS announces that test launch of GPRS-roaming is extended to February 29th.

Star phones from Love radio and MUZ-TV!

Ladies and gentlemen!MTS offers you to participate in nomination of popular loving pairs in show business and win a stylish phone model!

VIP-news: New Year's offer by MTS

Ladies and gentlemen! "Mobile TeleSystems" offers new opportunities to its users with the tariff plans "MTS. VIP"* to receive a discount for a part of subscription fee or obligatory monthly traffic fee when they are by roaming during the New Year's holiday.


MTS offers you a new service “GPRS-roaming” that allows to receive information and the Internet access when you are in a different network.

MTS Announces Record Subscriber Growth Numbers

Moscow, Russian Federation — January 08, 2004 — Mobile TeleSystems OJSC (“MTS” — NYSE: MBT), Russia’s largest mobile phone operator in terms of subscribers, announces that its consolidated subscriber base reached 16.72 million users as of the end of 2003.

Contact investor relations:

+ 7 495 223 20 25 ir@mts.ru

MTS Investor Relations
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