Device hangs sometimes

Hello Dhingra20,

Welcome to Apple Support Communities!

I understand from your question that your iPhone is periodically unresponsive. I can certainly help you with this!

If certain apps are becoming unresponsive, then try the steps here: If an app unexpectedly quits, stops responding, or won’t open

If your iPhone is instead restarting on its own, and/or showing a spinning gear, then follow the steps here: If your iOS device restarts or displays the Apple logo or a spinning gear unexpectedly

Please reply back if neither of these situations apply, or if the troubleshooting doesn't help. When replying please give additional detail about the issue, such as the iPhone model, iOS version, as well as any errors you may see.

Cheers.