iphone4S constantly warm when screen is off and not plugged in.

[73CortinaV8]

Just sitting on my desk, screen off, not plugged in, the phone is very warm. Like something is running.

I killed all my apps. I turned most location and all push services. None of the location services that are left on have purple or gray arrows next to them.

What could possibly be running?

 

[androiphone]

my 3GS sometimes used to get very hot and drop like 90% of the battery in a couple of hours, to stop it you had to turn the phone off then back on again, see if doing that solves it, an iPhone is basically just a mini computer and (sometimes) needs a reboot after an installed app or just in general.

 

[Sulwyn]

That used to happen to my iPhone 3GS and when I took it to the apple store to have it checked out, the genius told me it was a battery issue and replaced my phone.

 

[andyblila]

That doesn't sound good. They can run a scan on your battery and see if it's faulty.

 

[macrat]

Mine did that when all my stuff were synced to iCloud. I have turned them all off for now except the photo stream until I can figure out what's going on. For now my 4S is back to normal and my battery is happy

 

[73CortinaV8]

I think I found something that might be causing this.

I have outlook calendars alerts going to the locked screen. On the locked screen, sometimes the entries freak out. It's flashing text back and forth. I wish I had another video cam so I could take a pic of this

When it happens my phone starts getting very warm, even with the display off.