Enter the correct PIN, pattern, password, or biometric
Use Samsung Find My Mobile to unlock the device remotely
Use Google Find My Device if the phone is linked to your Google account
Restart the phone and try again if the lock is temporary
Use Smart Lock if it was previously enabled
Perform a factory reset from recovery mode if you cannot access the phone
Contact Samsung Support or your carrier for account verification and unlocking help
Visit an authorized Samsung service center with proof of ownership