Bharti Airtel is planning to invest Rs 20 billion over the next three years for its digital innovation programme, Project Next. Under the programme, Airtel has announced the launch of several initiatives including the redesign of the operator’s 2,500 retail stores across India. Meanwhile, Airtel is also planning to launch commercial voice over long term evolution (VoLTE) services by September 2017. The operator is currently undertaking trials for VoLTE in select cities including Mumbai. Meanwhile, Airtel is also planning to expand its 4G footprint to all the cities and towns by March 2018.