November 2001

20.11.2001
Mobile TeleSystems makes the first step towards international business

MTS to commence activities in Belarus Moscow, Russian Federation — 20 November, 2001 — Mobile TeleSystems OJSC (NYSE: MBT), Russia’s largest GSM 900/1800 mobile operator, today announced the commencement of its activities outside the Russian Federation.

20.11.2001
Mobile TeleSystems (MTS) third quarter 2001 financial results

MTS announces unprecedented regional subscriber growth, improved margins and commencement of activities in Belarus.

20.11.2001
MTS and Siemens carry out the first succesful UMTS voice call in Russia

Moscow, Russian Federation — 20 November, 2001 — Mobile TeleSystems OJSC (NYSE: MBT), Russia’s largest GSM 900/1800 mobile operator, and Siemens Information and Communication Mobile (IC Mobile) have carried out the first UMTS voice call in Russia at the UMTS test network in Moscow.

15.11.2001
“Mobile TeleSystems” launches new unified tariffs for the unified network

Moscow, Russian Federation — 15 November, 2001 — Mobile TeleSystems OJSC (NYSE: MBT), Russia’s largest GSM 900/1800 mobile operator, today announced significant changes to “within-the-network” or “intranet” roaming tariffs.

15.11.2001
“Mobile TeleSystems” reduces corporate tariff rates

Moscow, Russian Federation — 15 November, 2001 — Mobile TeleSystems OJSC (NYSE: MBT), Russia’s largest GSM 900/1800 mobile operator, today announced the reduction in the cost of calls and subscription fees charged under current corporate tariff plans and the launch of a new unique tariff “Corporate Active”.

15.11.2001
“Mobile TeleSystems” introduces new tariffs

MTS tariff plans make Russia’s distances shorter. Moscow, Russian Federation — 15 November, 2001 — Mobile TeleSystems OJSC (NYSE: MBT), Russia’s largest GSM 900/1800 mobile operator, today announces the launch of three new tariffs, which upgrade and replace tariffs previously offered by the company. The new tariffs offer substantially reduced call costs and further segment the market, allowing subscribers to select a tariff plan tailored to match their life style and budget.

01.11.2001
“Mobile TeleSystems” introduces a new generation of tariffs

MTS new tariff plans make it impossible to keep silent Moscow, Russian Federation — 01 November, 2001 — Mobile TeleSystems OJSC (NYSE:MBT), Russia’s largest GSM 900/1800 mobile operator, today announced the launch of two new tariff plans, that will replace “Youth” and “Favorite” tariffs. In terms of cutting costs, the new tariff plans “Avant-Guard” with federal numbers (11-digit, pre-fix 902 or 910) and “Elite” with direct Moscow numbers (7-digit numbers), effectively leave behind all the latest offers on the mobile market.

Contact investor relations:

+ 7 495 223 20 25 ir@mts.ru

MTS Investor Relations
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