Charge the battery fully
Replace a worn-out battery
Turn off auto power-off or scheduled power settings
Disable battery saver or low power mode
Update the phone’s software
Remove recently installed apps causing crashes
Check for overheating and let the phone cool down
Clean the charging port and use a working charger
Restart the phone in safe mode
Free up storage space
Reset settings if the problem continues
Back up your data and factory reset the phone
Contact the manufacturer or a repair service