How To Add Battery Percentage On Samsung S8. Check that the device charges well. Turn on your Samsung Galaxy S8 and launch the Easy Battery Calibration app.

Completely drain the battery of your Samsung Galaxy S8 until it can no longer turn on. 1 Go to the Settings menu Display. Unlock your Samsung Galaxy S8.
Place the device to be charged on the back of the Samsung Galaxy S8.
Click on the button Battery Calibration. Place the device to be charged on the back of the Samsung Galaxy S8. S8 Battery Percentage Keeps Jumping. Check that the device charges well.

