Q: my iphone getting heat

Hello faaraz,

Depending on the warmth of the iPhone, this can be normal behavior. The following article explains warmth while charging and using other functions more in-depth:

iPhone, iPad, and iPod touch (4th generation): Keeping device within acceptable operating temperatures

http://support.apple.com/kb/HT2101

Your iPhone will warn you if it is over heating, and if it needs to, it will shut itself down.  If you believe the temperature is a concern, you can isolate the issue by restoring your iPhone as new.  This will help you identify whether it is a hardware or software issue:

iTunes: Restoring iOS software

http://support.apple.com/kb/HT1414

Thank you for posting in the Apple Support Communities.

Best,

Sheila M.