As part of the initiative, customers across the city can now avail a complimentary upgrade to Airtel 4G at 3G prices.
"The company will use this trial phase as an opportunity to gather valuable customer feedback around the quality of its 4G services and assimilate these market insights into Airtel's wider agenda of building a world-class 4G network infrastructure for the city," the statement said.
Announcing the beta launch, Ashok Ganapathy, Hub CEO - Mumbai. Maharashtra, Goa & Gujarat at Bharti Airtel Ltd said, "As an increasing number of Indians show a preference for consuming data and content over their mobile devices, we at Airtel are excited to bring the power of 4G to our customers in Mumbai. While launching Platinum 3G we significantly augmented our network and now have made further investments in building a robust 4G network here. For us, delivering a compelling service experience to our customers is our utmost priority. We want our existing customers to be the first ones to enjoy the Airtel 4G experience and are offering them a free upgrade to Airtel 4G at the same price as 3G."
The company said that to avail this offer, existing customers with 4G ready mobile devices can walk into any of Airtel's retail touch-points across Mumbai and upgrade to a 4G SIM.
Earlier in April 2012, Airtel had launched India's first 4G service in Kolkata.
Airtel's 4G services are now available across India including Mumbai, Chennai, Bengaluru, Pune, Chandigarh and Amritsar.