When i charge my htc it says unoffical htc charger but it is ....

A

AC Question

If I charge my HTC with my official HTC charger is says it's not the official charger and it will charge very slowly. What ???
So I use my Samsung charger and it does charge fine. But now I notice if I use the Samsung one and use the phone whilst charging it is impossible to use the screen. It's so insensitive so laggy, and anything I touch on the screen it just has its own mind. But I seem to only have these screen problems when I plug in the Samsung charger.
Wtf ?