Originally Posted by
SpookDroid I've never used a T-Mobile unlocked phone, but then again, the ones I've seen reports of not being able to update unless the SIM is in are AT&T's.
I don't understand how any carrier phone unlocked and used on another carrier, is able to update OTA. Since the update comes from the carrier, you have to connect to that carrier server. I guess some might allow the phone to connect to their servers when they are connected to WiFi.
But yeah, AT&T doesn't allow it. They won't even update if your phone is connected to WiFi and you have a non-activated AT&T SIM in the phone.