FlyerTalk Forums - View Single Post - Windows 10 Mobile
Thread: Windows 10 Mobile
View Single Post
Old May 29, 2016 | 10:11 pm
  #3  
unmesh
All eyes on you!
20 Years on Site
 
Join Date: Nov 2003
Location: San Jose, CA
Posts: 474
Originally Posted by danielonn
My Father got an ATT Microsoft 640 and needs it flashed to TMoblie to unlock Band 12, get WiFi Calling once its supported how can we do this safely? I contacted Cellphone repair shops and they want $50. What is your suggestion?
Apparently there is a bug in Windows 10 that prevents WiFi calling. You can reflash AT&T to the T-Mobile version of 8.1 by following the instructions at

https://www.reddit.com/r/windowsphon...640_unlocking/
unmesh is offline  
Reply