How To Turn Off Fast Charging Samsung. Turn off the screen of your phone or turn off the device in order to increase the charging speed. On the Battery screen you can enable or disable Fast Cable Charging and Fast Wireless Charging by moving the slider to ON or OFF.
The Fast charging feature works only when the screen is turned off. Scroll all the way down until you find the section named Battery and tap on it to get more options. Now the phone will charge at a normal.
If you have a Samsung phone for example you need to head over to Settings - Device Maintenance - Battery.
Launch the Settings application. Now tap on the Battery option. Look toward the bottom of the list and choose the Charging option. This feature should be on by default but you can also turn it on manually.
