Battery overheating

[mikeact]

I keep getting a voice message that my battery is overheating. ?..any ideas why this should be...I'm not downloading, just using it in the usual way.

 

[friedtators]

Are you sitting in the sun at the beach? Hot car. Hot outside and stored in your pocket?

 

[mikeact]

I wish....(sun), no, just at home in the lounge. I do wonder if it's the offical HTC cover..(the grey and red thing) that may be holding the heat in perhaps ?