Airtel is likely to launch its VoLTE services first in Mumbai

Bharti AirtelBSE -1.10 % is set to take on bitter rival Reliance Jio Infocomm at its own game by launching, as early as next week, voice services using the same 4G technology

Bharti Airtel is set to take on bitter rival Reliance Jio Infocomm at its own game by launching, as early as next week, voice services using the same 4G technology employed by