Use the device’s official recovery method
Enter the correct PIN, password, or pattern if you remember it
Use Face ID, fingerprint, or other biometric unlock if enabled
Use the manufacturer’s account recovery option
Use Google Find My Device for Android if available
Use Apple Find My for iPhone if available
Reset the device using the official recovery mode
Contact the phone manufacturer’s support
Visit an authorized service center
Restore from a backup after a factory reset
Keep proof of ownership ready for support assistance