Q: iphone 5s 64 gb with ios 9.2.1 giving frequent freezing problem , plz suggest

Hi varun rawlani,

Welcome to the Apple Support Communities! I'm sorry to hear you are having these issues with your iPhone. If your iPhone frequently stops responding or restarts on its own, you may find the information and troubleshooting steps outlined in the following articles helpful:

If your iPhone, iPad, or iPod touch doesn't respond or won't turn on - Apple Support

If your iOS device restarts or displays the Apple logo unexpectedly - Apple Support

Regards