I am going to change from TMobile to ATT, and I have HTC 8X. If I unlock TMobile HTC 8X, will I be able to use with ATT without any issues? And when 8.1 comes around, will I be able to update? Thanks for your help.
Technically your phone should be compatible, but I'm not sure if T-Mobile changes any settings that may create any issues, for example in some cases phones from T-Mobile have slower data speeds or in doors connectivity issues. As far as the update, if T-Mobile pushes it, you'll probably not get it, if it comes directly from Microsoft, you should be able to download it.
Did a post have a solution that worked for you? Help other people find solutions faster by marking posts that helped you as an "Accepted Solution". Learn about accepted solutions: Learn More.
*I am an AT&T employee and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.