Red face Experience

You all gys are right and now I want to draw your attention to a problem and I think it will be reason of slow charging that I observed you can try it yourselves
1.Turn off your device
2. Take it at dark place (I mean turn off lights of your Room)
3. Connect charger

you will see a whit battery charging animation and wait for turning off screen then you will observe that there is still some back-light that should not be It is the problem!!!