How To Remove Battery On Galaxy S8. First detach the battery from the enclosure then insert the tool on the side between the enclosure and the battery. Using other accessories may invalidate your warranty and may cause damage.
Before disassembling your device be sure the battery is charged below 25. Repeat this process on the other sides of the battery. However if it didnt work try doing this.
Press and hold the Power and Volume down key for up to 45 seconds.
Use the Home screen or the App Drawer to access the Settings app Scroll down to the Battery section tap on the Battery section Look for the option labeled as Percentage on status bar it should be right under the category Remaining battery power. Gently remove the battery by inserting your tool between the battery and the casing. Repeat this procedure on the other side of the battery. This guide involves removing the back cover of the device so you will need replacement adhesive to reattach the back cover to the phone.
