On 19 May 2010, the 3G spectrum auction in India ended. Tata DOCOMO paid?6964.29 crores for spectrum in 22 circles. These circles obtained 3G licences and they are Madhya Pradesh&Chhattisgarh, Gujarat, Haryana, Karnataka, Kerala, Maharashtra & Goa, Punjab, Rajasthan, and Uttar Pradesh(West).[11]
On 5 November 2010, Tata DOCOMO became the first private sector telecom company(third overall) to launch 3G services in India, with a 20 city launch.
On July 19, 2011, Docomo and Aircel entered into a roaming agreement for 3G services to jointly roll out 3G networks in the three circles where they both have coverage(Karnataka, Kerala, and Punjab).[12] On December 14, 2011, Docomo ended its agreement with Aircel. Both operators ended the deal after the Department of Telecom said that such 3G arrangements were illegal, as the pacts violate licence terms and conditions.[13] Tata DOCOMO and Aircel currently have bilateral roaming agreements to allow their subscribers to seamlessly use 3G on roaming. Tata Docomo[14] customers use Reliance GSM’s 3G network when they are on roaming in Delhi.
Docomo had about 1.5 million 3G subscribers as of May 2011.[15]