i got mine unlocked and yes i can connect to the tmobile network but it disconnects too much
I don't believe this. I was not in any agreement with Sprint and bought the phone full price and they wouldn't unlock it. They said they will unlock it but it will only work for international and they told me over and over they do not unlock for domestic.. No matter what.
So if you are unlocked you had to go through someone other than Sprint.
If you do somehow get it unlocked for domestic then yes you would be able to use tmobile and att.... But only HSPA.. Not LTE.
Sent from my T-Mobile HTC One using AC Forums.