I have upadted my iphone 4s to 9.2 and it is handing help me to solve the hanging problem

Hi Mayank Mathur,

If you are having issues with your iPhone becoming unresponsive at times, you may want to try some things to troubleshoot.

First, update the iPhone's operating system to the latest version, currently iOS 9.1 - Update the iOS software on your iPhone, iPad, or iPod touch

Next, quit all running applications and test again -

Force an app to close in iOS

Next, I would try restarting the iPhone -

Restart your iPhone, iPad, or iPod touch

Thanks for using Apple Support Communities.

Best to you.

Greetings Mayank Mathur,

Okay if those steps did not fix your issue the next thing to try would be to back up the iPhone, erase it, and restore from your backup. See this article for how - How to erase your iOS device and then set it up as a new device or restore it from backups

Thanks for using Apple Support Communities.

Be well.