I was watching a movie in the cardboard and my phone's battery got down too low. So I connected to the charger and continued watching the movie in cardboard. Then I noticed that my phone wasn't charging and was very very hot. Then I closed everything and unplugged the charger and left the phone idle for 10 min till it came to normal temperature. And then again I plugged in the charger and the phone was charging normally..... Is it normal to stop charging when hot? I think it's normal but just wanted to make sure nothing was wrong.