Verify the phone, tablet, charger, and USB cable have no physical or liquid damage.

Check the USB connections for corrosion and bent pins. Inspect the Liquid Damage Indicator (LDI). The LDI should be solid white, or white with pink or purple X's. The USB connection should be firm with very little mobility.

Remove any cases or other accessories that may cover the charging port or buttons.

Important: If you use the biometric security feature, the phone will require your backup password to unlock after rebooting.

There are two ways you can force a restart on your device:
 

• Press and hold the Power button (or Side button) and Volume down button for 20 seconds.
  
  
  
• On devices with removable batteries, remove the battery for 60 seconds, and then reinsert it.

Connect and charge the phone or tablet using the appropriate charger for at least 1 hour. The battery charging indicator may take up to 10 minutes to appear on the display.
 

Disconnect the phone or tablet and then attempt to turn it on by pressing and holding the Power button (or Side button) for 15 to 20 seconds. The Samsung Galaxy logo will appear.
 

• If the screen turns on, your device requires a charge. Turn off your device and reconnect it to the appropriate charger until it's fully charged.
• If the screen fails to turn on after performing the previous steps, your device needs service. Contact the Samsung Support Center for further assistance.