Why is my smartphone S4 mini overheating?

A

AC Question

Hi.

A year ago I bought a Samsung Galaxy S4 mini. A few weeks ago I started do have some problems with opening the galery of photos and the big problem is that the phone is overheating till 60º everytime that I charged him. Sometimes when I'm using facebook only just for seeing the feed its overheating too.

Anyone has experienced these problems in S4 mini?