how to fix TEMPERATURE warning in iphone 4

iPhone was just sitting there on the desk restart by itself. A call came in and "Temperature" shows up on screen. Stay some miuts and the same situation Restart shows me the temperature warning screen

Attached Images

	Temperature 1.png (56.7 KB)
	Temperature 2.png (56.0 KB)

via Welcome to gsm-tips http://ift.tt/1b1XZKd