Vodafone India launches VoLTE services in Kolkata - ET TelecomETTelecom.comLast September, Bharti Airtel was the first among the older carriers to embrace VoLTE technology and launch the service.Vodafone rolls out VoLTE in Kolkata, to launch pan-India soonMoneycontrol.comVodafone launches VoLTE services in KolkataGizbotall 8 news articles »