The document provides market share data for major mobile operators in Russia as of the fourth quarter of 2012. It shows that while the total number of mobile subscribers in Russia grew slightly from 229.8 million to 230.5 million in Q4 2012, the three largest operators - MTS, VimpelCom, and MegaFon - all experienced negative net additions during this period. MTS maintained the largest share with over 100 million subscribers, followed by VimpelCom with over 106 million subscribers, while MegaFon had around 64.6 million subscribers.