Wikipedia
MegaFon ( Russian: МегаФон), previously known as North-West GSM, is the second largest mobile phone operator and the third largest telecom operator in Russia. It works in the GSM, UMTS and LTE standard. Its main competitors are VimpelCom (Beeline), Tele2 ( Rostelecom) and Mobile TeleSystems (MTS) in the cellular segment, and Rostelecom and Interregional TransitTelekom in the fixed-line seagment. As of June 2012, the company serves 62.1 million subscribers in Russia and 1.6 million in Tajikistan, South Ossetia and Abkhazia. It is headquartered in Moscow.
In 2002 the company changed its name from North-West GSM to MegaFon when it acquired several regional companies, becoming the first GSM company in Russia to cover all its territory. The name "MegaFon" in Russian looks exactly like the word for a megaphone; other connotations are mega- as "big" and fon as "telephone".