Problem in IPhone – Temperature Error:

Hello
Generally it’s warm as well as there is sunshine in outside and it is one of the most horrible enemies for an iPhone.
That day I was in my car and I was on a call using the Bluetooth, and I also charging my phone via the cigarette adapter.
Suddenly the call drops. I was familiar with that signal coverage on US 101 is not greatest in all the time with respect to AT&T. However when I saw my iPhone, I found the following error on the screen: Temperature
Error: Temperature Error

Temperature
iPhone needs to cool down before you can use it.
