MegaFon (previously known as North-West GSM) is the third largest mobile phone operators in Russia.It works in the GSM and UMTS standard. Its main competitors are Bee Line GSM and Mobile TeleSystems (MTS).
The name "MegaFon" in Russian looks exactly like a word for a megaphone; other connotations are mega- as "big" and fon as "telephone". Its headquarters are located 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.
As of February 2007, MegaFon had 30,657,864 subscribers.