Idea Cellular has launched its 4G services in the Mumbai and Jaipur regions. The services in Mumbai have been launched using frequencies in the 2100 MHz spectrum band. Meanwhile, the operator has also expanded the coverage of its 4G services in about 100 towns in West Bengal by launching services in the Asansol, Durgapur, Siliguri, Kharagpur, Berhampur and Midnapore regions of the state.