Verizon did it for their G3s, T-Mo has it, Sprint has it. Specs on the AT&T version of the LG G3 don't mention it, but cheap cousin LG G3 Vigor has it. Can AT&T enable HD Voice on their LG G3s via software update?
Our area (in Maryland from DC to Baltimore to Hagerstown) just got HD Voice coverage.
Our area (in Maryland from DC to Baltimore to Hagerstown) just got HD Voice coverage.