> Calls generally aren't made over 3G to this day, they're made over 2G You must be talking about CDMA (EV-DO vs 1xRTT) only. Not true with GSM+UMTS networks.

> Calls generally aren't made over 3G to this day, they're made over 2G You must be talking about CDMA (EV-DO vs 1xRTT) only. Not true with GSM+UMTS networks. As far as network operators are concerned, the more data (incl. voice channels) carriers that can be fit into their spectrum allocation and/or existing site layout, the better. Of course they want to use LTE for voice, but the VoLTE saga has been a long and drawn out one.