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

If you are one of those unlucky Android users who’ve purchased a second-hand phone and don’t know how to unlock Android phone without password, fret not. This article will teach you seven ways ...

Advanced users can use Android Debug Bridge (ADB) to unlock their devices without a password. This method requires a computer, USB cable, and a basic understanding of command-line operations.