In addition, T-Mobile's CEO announced that the carrier now has its VoLTE service available in 16 markets. That includes major metro markets like New York, Chicago and Los Angeles. Later this week, an update to the carrier's Samsung Galaxy S5 will add support for VoLTE. That would mean that 4 of the handsets offered by T-Mobile (LG G Flex, Samsung Galaxy Light and the Samsung Galaxy Note 3, in addition to the Galaxy S5) support the voice over LTE feature. Currently, 100 million T-Mobile subscribers can use the service.
With 15+15MHz and 20+20MHz channels in use by T-Mobile, the carrier says that its VoLTE service has a theoretical peak speed of 150Mbps.