Hot Phone
my phone has suddenly become very hot, not in sun, cameras have all steamed up and phone now dead? Help please.
Question marked as
That sounds like you have got it damp or wet
You should arrange a "repair"
https://support.apple.com/iphone/repair/service
This may well be a replacement phone and the price is in the article, depending on your warranty or AppleCare+ status.
You can see additional service information within the following article:
Get your iPhone, iPad, or iPod touch ready for service - Apple Support