Tmobile announced their volte and wideband lte market. Keep in mind that tmobile is considering 15+15 minimum to be wideband lte now, so you won't get anywhere close to 147mbps that tmobile previously announced on 15+15.
Here's your list of T-Mobile's Wideband LTE and VoLTE markets | Android Central
dpham00, Android Central Moderator
Sent from my Verizon Samsung Galaxy Note 3
Here's your list of T-Mobile's Wideband LTE and VoLTE markets | Android Central
dpham00, Android Central Moderator
Sent from my Verizon Samsung Galaxy Note 3