I can't login to my service provider after replace the battery?
After replacing the battery to my iphone4 i try to login with pin number to my service provider but the phone stacks at this point
Think he's trying to say he's stuck on the password screen
Do a hard reset press and hold power and home button at the same for 7 seconds then let go of home and keep pressing power til the phone shows the apple logo
Try to set the date and time manually. Then restart the phone :)
Or just try to connect to WiFi, and take out the sim tray and put it back in :)