#2 Vodafone

Vodafone Group Plc is a British multinational telecommunications company based in London, UK and Vodafone India is its subsidiary. Vodafone India, formerly known as Vodafone Essar and Hutchison Essar, is the mobile network operator based in Mumbai, India.  The company operates nationally and has more than 146 million customers as of November 2011 and presently it is country’s second largest telecom operator. In July 2011, Vodafone group bought out its partner Essar’s shares of the company, and became the sole owner. The company has 16.88 percent market share in Indian telecom market.

 #1 Bharti Airtel

Bharti Airtel Ltd. popular as Airtel, the company provides telecommunication services, and is based in New Delhi, India. Airtel operates in 20 countries across South Asia, Africa and the Channel Islands. The company provides GSM network in all countries, including 2G, 3G and 4G services depending upon the country of operation. It has 185.92 million subscribers as of September 2012, making it he largest telecom operator in India. The company also provides broadband and subscription television services, like Airtel DTH. Airtel has 20.58 percent of the market share in Indian telecom sector.