I think the temperature icon means the device is overheating. I would set it aside for a little while, somewhere out of the sun and see if that helps at all.
Best AnswerYou say you have tried to restart it by pressing and holding the left button and bottom right button together for 15 secs?
I think your only option now is to contact customer support. If your device is still under warranty they should be able to arrange a replacement.
Best Answer