How to wireless charging Galaxy S8 or S8 plus?
Plug the wireless charging pad’s wall charger into a wall outlet. Plug another end of the charger into the back of the charging pad base. The indicator light on the front of the charging pad base will flash blue, green, and cyan when you first plug it in. Place your Galaxy S8 or S8 plus on the charging pad with the screen facing up. In most cases, it’s no need to remove the cases or covers on your S8 or S8 plus. The charging pad will emit a steady blue light when your device is charging. It will emit a steady cyan light when charging at low power (less than 5 V/2 A). If the charging pad emits a slowly flashing blue light, you should reposition your device at the center of the charging pad. The charging pad will emit a steady green light when your device is fully charged. Best wireless charging pads for Galaxy S8 and S8 plus.