So, my Brother trashed his AT&T Lumia 635 a few months back & I suggested the L640 as its replacement. He ended up buying a T-Mobile 640 at Walmart and while he has been happy with the phone, T-Mobile's coverage here in NorCal and less than stellar customer service has him wanting to switch back to AT&T.
He just refilled his account which puts him over $100 in refills so should be able to request the phone be unlocked per T-Mobiles unlock policy. Before he jumps ship, He would like to know if his phone will be fully functional with AT&T. I know he will lose WiFi Calling but will there be any other issues like will Visual Voicemail be functional with AT&T?
He just refilled his account which puts him over $100 in refills so should be able to request the phone be unlocked per T-Mobiles unlock policy. Before he jumps ship, He would like to know if his phone will be fully functional with AT&T. I know he will lose WiFi Calling but will there be any other issues like will Visual Voicemail be functional with AT&T?
Last edited: