The company has launched the service in 29 towns across 20 districts in eight telecom circles operating in Andhra Pradesh, Telangana, Madhya Pradesh, Chhattisgarh, Punjab, Haryana and Odisha, Idea Cellular Chief Corporate Affairs Officer Rajat Mukarji said.

"We have already launched the service in South India starting with Andhra Pradesh, Telangana and Madhya Pradesh as planned. Next roll out will be in Maharashtra, Goa and North East by end of March 2016," he told reporters.

The company's plan was to cover 750 towns across 10 telecom circles by June 2016, he said.

Mukarji and top company officials were here to announce the launch of 4G service in 29 districts in Tamil Nadu.

Stating that the company has 1800 MHz 4G spectrum in 10 telecom circles, he said it covers 50 percent of telecom market contributing over 60 per cent of company's revenue.

The company would offer 4G service at 3G rates to subscribers, he said, adding that currently there are one billion people using 4G.

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