Investor Presentaiton

MTS a step ahead Appendix - Definitions and Reconciliations LTM OIBDA can be reconciled to our consolidated statements of operations as follows: USD mln Net operating income Add: D&A Add: Impairment Add: Tax and antimonopoly claims Adjusted OIBDA Six months ended Dec 31, 2011 Six months ended Jun 30, 2012 Twelve months ended Jun 30, 2012 A B C = A + B 1,572.8 365.3 1,938.1 1,142.8 1,188.4 579.0 2,331.2 579.0 500.0 500.0 2,715.6 2,632.7 5,348.3 30

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