"The company will do the beta launch of 4G in Delhi on June 18," a source said.
The company had started its 4G services in 2012 with the first launch in Kolkata. Airtel's 4G services are now available in several parts of the country including Chennai, Bengaluru, Pune, Chandigarh and Amritsar.
The company has also got permission from the Department of Telecom (DoT) for the launch of its 4G services in Delhi. It is learnt that the telecom major has tied up with Chinese telecom equipment and network solution firm Huawei for 4G network rollout in Delhi circle.
Bharti Airtel had over 324 million customers across its operations at the end of March 2015, as per data available on its website.