Why Your Smartphone Heats Up During Intense Use -

All smartphones warm up a little during intense use. This is quite
normal and nothing to be alarmed about. During intensive use, the
phone draws a lot of power from the battery and this causes it to
warm up.
What is abnormal is where your phone heats up tremendously and
becomes hot. Sometimes, the only thing to fear is a burning
sensation when in contact with your body. In worse cases, the
phone may shut down, become unresponsive or reboot.
In the worst case scenario, the device may combust – burst into
flames.
Also, note that heat drains the battery of your phone faster. The
hotter it gets, the faster your battery drains, so you get the most
out of your battery if you keep your phone from heating up too
much.
What To Do If Your Phone Gets Hot During Use
1. Put it down a while and let it cool down.
2. Turn off WiFi or 3G/4G data. Internet usage are key power
drainers in any smartphone. By disabling your internet connection,
you cut off this factor, and of course mostly likely will put down
your phone :-)
3. Don’t use your phone in extremely hot conditions e.g near
ovens, in direct, scorching sunlight.
4. Turn off battery draining apps. Those are usually apps that run
in the background and using your internet connection. These may
include Map apps, email apps, and ocial networking apps.
5. Sometimes, the problem is a rogue app – a badly written app –
running in the background. Find it. Kill it. Uninstall it. Do not be
merciful.