Does the Tmobile Note 4 Get HDVoice/VoLTE On ATT? topic

Hey guys,

I'm on ATT but im thinking of getting a TMO Note 4 and using it on ATT. I've done my research and the TMobile Note 4 has all the bands that ATT uses for normal LTE, however I haven't figured out if it supports ATT's Carrier Aggregation bands or even if the ATT model does. The one thing I haven't found is if I will get VoLTE and HD Voice when in an equipped market using the Tmobile Note 4 vs the ATT one. I know that its a standard but I'm curious if ATT blocks non ATT branded phones from accessing it.

Any first hand experience or someone who knows this stuff would be amazing.

Thanks everyone!