How To Fix Device Charging Slowly. It will help you to determine if a third-party application is causing the problem. Slow charging is not a common problem with Galaxy S8 or S8.

Try charging your device with different cables using your own adapter. To recalibrate the operating system so that it gets accurate. Download and run the advanced system repair tool to fix slow internet speed.
Best pre-installed Android widgets that you should know about.
If it is charging normally the lock screen will show Charging and if its slow you will see Charging Slowly text on your lock screen. If this option doesnt appear drag the app to the top of the screen where it says uninstall. In fact the device comes with the Adaptive Fast Charger which should deliver lightning-fast charging. Press the Volume down key to highlight yes and press the Power key to select.
