To set 3G only on AT&T use this method. Read entirely as there's one step that gets the change to stick. I read it in another thread but can't find it right now. But it did work for my 920.
Do the ##3282# field test
Hit the three buttons and go into settings
The important step: Toggle ENS to off and reboot. From my understanding ENS stands for Emergency Notification System and unless you subscribe I don't think it hurts to leave it off.
Now go back to the field test and switch to 3G Only and the change should stick
Do the ##3282# field test
Hit the three buttons and go into settings
The important step: Toggle ENS to off and reboot. From my understanding ENS stands for Emergency Notification System and unless you subscribe I don't think it hurts to leave it off.
Now go back to the field test and switch to 3G Only and the change should stick