November 2003

28.11.2003
MTS tariffs for intranet roaming: 6 more Russia's regions!

From December 1, 2003 6 Russia’s regions covered by the cellular operator “Primtelefon” (MTS’ subsidiary): Primorsky krai, Sakhalin region, Kamchatskaya region, Magadan region, Jewish AO, Sakha Republic (Yakutia) are integrated into MTS intranet roaming tariff zone.

27.11.2003
“Super favorite number”: super low rates for calls to the loved ones

MTS prepares you a present for the New Year and Merry Christmas: from now on calls originated to Favorite numbers are charged 0.01 USD per minute! Only you need is activate the Super favorite number service.

27.11.2003
Joining MTS corporate tariffs is becoming easier!

From November 27, 2003 the terms how to receive the corporate user status are changed. To become MTS corporate users is now much easier!

27.11.2003
New unlimited tariff plan — a New Year gift for businessmen!

MTS is pleased to announce the launch of a new unlimited tariff plan Exclusive for its users in the Moscow region from November 27, 2003.

20.11.2003
“JEANS 0.07”: addition to the “JEANS” tariff group

MTS announces extension of the popular JEANS tariff group with free subscription. The new tariff plan JEANS 0.07 features the exclusively low cost of intranet calls that amounts to only 0.07 USD per minute1.

20.11.2003
MTS Increases its Ownership in Siberian Cellular Systems to 81%

Moscow, Russian Federation — November 20, 2003 — Mobile TeleSystems OJSC ("MTS" - NYSE: MBT), Russia's largest mobile phone operator in terms of subscribers, has acquired an additional 30% of Siberian Cellular Systems — 900. As a result of this transaction, MTS' ownership in the company increases to 81%.

Contact investor relations:

+ 7 495 223 20 25 ir@mts.ru

MTS Investor Relations
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