Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the largest mobile phone operator in Russia and the CIS, has filed its annual report on form 20-F for the fiscal year 2008 with the United States Securities and Exchange Commission.

The document can also be found at https://www.mtsgsm.com/resources/annual_reports/  of the Investor Relations section. Hard copies of the document with the Company’s complete audited financial statements will be available free of charge to shareholders upon request.