Report of Independent Registered Public Accounting Firm

To the Shareholders of OJSC Mobile TeleSystems:

We have audited the accompanying consolidated balance sheets of Mobile TeleSystems, a Russian Open Joint‑Stock Company, and subsidiaries (”the Group”) as of December 31, 2007 and 2006, and the related consolidated statements of operations, changes in shareholders’ equity, and cash flows for each of the three years in the period ended December 31, 2007. These financial statements are the responsibility of the Group’s management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, such consolidated financial statements present fairly, in all material respects, the financial position of the Group as of December 31, 2007 and 2006, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2007, in conformity with accounting principles generally accepted in the United States of America.

As described in Note 2 to the consolidated financial statements, the Group changed the manner in which it accounts for uncertain tax positions effective January 1, 2007, in accordance with the adoption of Statement of Financial Accounting Standards Interpretation No. 48, “Accounting for Uncertainty in Income Taxes an interpretation of FASB Statement No. 109”.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the Group’s internal control over financial reporting as of December 31, 2007, based on the criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated April 15, 2008 expressed an unqualified opinion on the Group’s internal control over financial reporting.

/s/ ZAO Deloitte & Touche CIS

Moscow

April 15, 2008