Press and hold the Power button for approximately 10 seconds or until the device power cycles.
If the device doesn't power on or is unresponsive, attempt the following:
Press and hold the Power button and Volume button for 30 seconds.
Plug the device into a manufacturer approved wall charger and wait 1 hour.
The battery charging indicator may take up to 10 minutes to apppear on the phone's screen.
The Samsung factory charger is required to properly charge the device. Battery damage can result from prolonged use of a 3rd party charger.
If the LED indicator doesn't light up after 10 minutes, move the wall charger to a different outlet to ensure the issue isn't with the outlet.
Using the USB connection on a computer requires significantly more time to charge (up to 10 hours).
Verfiy that the device, charger and USB cable have no physical or water damage.
Disconnect the device from the wall charger, then press and hold the Power button 30 seconds.
If the device still doesn't power on, repeat steps 1-3 using a different charger.