To unlock your iPhone from its carrier, you'll likely need to contact your carrier directly to cancel your contract.

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 ...

You'll need your iPhone's IMEI number if you want to unlock it and use it on a different cellular provider.

If you buy your iPhone from a carrier, or elsewhere on a subsidised contract, then it may be ‘locked’ to that carrier – meaning it won’t work if you try to switch to a physical or e-SIM from another ...