PIN Code / Password As with every other smartphone, you can use a four-digit PIN code or alphanumeric password to unlock the S8.

Easy steps to Set up a Secure Screen Lock on Galaxy S20 To check and see if the PIN lock you’ve set is working, lock the screen on your device and then unlock it by entering the correct PIN code.

Similar to password issues, you may also refer to Samsung Support and check on Samsung Galaxy S4’s support page for further assistance in setting up a PIN unlock on your device.