Windows Phone 8 overheats with a very simple game

Hey guys, how are you?

I’m developing a VERY simple tic tac toe game using, mostly, only GUI elements (buttons and labels). However, the game overheats the Nokia Lumia 920. All the textures are set in minimum size and RGBA Compressed DXT5 format. The quality is set as ‘Fastest’ in QualitySettings, too.
Works without overheating in a Android version (using a LG Nexus 4 to test).

All used items are cached in code.
Using Unity 4.2.

Could anyone help me?
Thanks!

My first thought is frame rate. I’ve noticed windows phone runs as high as it can. Ios seems to cap it at 30.

Try setting Application,targetFrameRate to 30