You can unlock your Android phone even if you've forgotten the passcode, but you'll usually need to factory reset the phone.

Forgot your Android password? Use Google’s Find My Device to reset it remotely, or try a factory reset via the volume and power buttons. Samsung users can unlock their phones using Find My Mobile if ...

All Pixel phones can now use the Screen-off Fingerprint Unlock feature in Android 16 Beta 3. The Screen-off Fingerprint Unlock feature lets you unlock your Pixel phone even when its screen is off. It ...

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