I took the front panel of my iPhone 5 off because it wasn't working. In the process I pressed the top power button accidently and I think the phone has turned itself back on. The interior components are warm and they have not cooled in over 30 mins. I don't want to put the front panel back on while its running and risk shorting something or breaking it worse. Is there a way to turn the phone off without the front panel/screen attached? It only has the top on button.