If you forgot the passcode to your iPad, or the device has been disabled, you can restore and unlock it with a computer or ...
You can reset an iPhone, even without the password, by putting it into "recovery mode" or erasing it via iCloud's Find My ...
ZDNET's key takeaways Use these codes to forward calls, pay your bill, check balances, etc.Some of the codes work only on certain carriers or devices.One of the codes also might erase your data, so ...