I have the Tmobile version as well. Did you reset the apn? Yes as long as you flash, the 64 twrp image.It's strange, I can't get mobile data to work at all, only gsm for texting. I might have to go back to stock so I can use google maps and not get lost everywhere. Have you had this problem? It makes the rom unusable for me. Also, can I use a 64 bit rom for this phone? I'm pretty sure the architecture is 64 bit. I'm also on the T mobile version.