I use an iPhone 4s and it gets warm during use,with constant use it becomes hot. Pls what is the problem with it?

Battery gets warm on heavy use on all electronic devices

bigtt76:
Battery gets warm on heavy use on all electronic devices

o

What about it getting hotter later? Do all devices do that?

All devices do that after long use.

inikamoze:
o

What about it getting hotter later? Do all devices do that?

Is mostly when you use 3G network. Off data after use and double click the home button to stop apps from running in the background

Usage during charging. Is my second phone(jailbroken) thats why i know