After a factory reset, Android 5.1+ requires the previous Google account. Dr.Fone bypasses this by manipulating account manager, exploiting Android Accessibility bugs, or using a custom launcher to sideload a bypass APK.
The laptop died. Sparks. Silence.
New device paired. Welcome, Node 47.
Dr.Fone forces the device into a custom recovery environment (or uses existing OEM recovery) to access the /data/system partition where lock screen credential files ( locksettings.db , gatekeeper.password.key , gatekeeper.pattern.key ) are stored. dr.fone - screen unlock -android- full