JulianV25, the S8 is an awesome phone. I regret to learn your device is giving you so much trouble. It looks like for your device if you press and hold the power button in for a minimum of 10 seconds (sometimes a little longer like 20) your device should boot back up. It may need to be plugged into the charger first for a few minutes before you try this if your device is dead. Please keep us posted on how that works.
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