I've taken my VZW iPhone 6+ to Tmo but have been having an issue with VoLTE not working. It worked for a week or so and right around the time of the 8.1.3 update calls have been dropping to Edge. I live in a recently refarmed area so all I have is Edge and LTE. All the settings on the phone are correct. I'm on a postpaid account, 18.1 carrier setting, and 8.1.3. Voice + Data checked for LTE. Has anybody else had this happen? If you've taken a VZW iPhone 6/6+ to Tmo from Verizon has VoLTE worked for you?