My battery drains fast and gets hot, phone is running slow. What could it be?

[AC Question]

My battery drains fast and gets hot, phone is running slow

I tried replacing the battery but it's still running slow and it gets hot when charging, then loses charge rapidly. I have looked at the battery icon in settings, and there are no apps running that are taking up a lot of power.
Any ideas?

 

[DLK1]

Re: My battery drains fast and gets hot, phone is running slow

What make/model phone are we running here, what version of Android?

 

[Rukbat]

Re: My battery drains fast and gets hot, phone is running slow

There's either something running the CPU heavily (maybe a system app that you aren't seeing), or there's a hardware fault. It probably has to go to a shop for diagnosis.

 

[Cozza1969]

Re: My battery drains fast and gets hot, phone is running slow

Okay thanks. It's a Samsung Galaxy S3 mini

 

[Cozza1969]

Re: My battery drains fast and gets hot, phone is running slow

Samsung galaxy S3 mini Android 4.2.2