Man, I left sprint for about two years (since I last posted) and am now back with a GS7 and I'm amazed at the progress made on speed and better coverage. I love WiFi calling too big savior when i'm at moms house with no service visiting. Anyways, are there plans to switch to VoLTE and use the wifi calling handoffs to VoLTE like Tmobile and Verizon do? That would be great. Wifi calling right now is kinda like an (dare I speak its name) air rave.