Hi Laksh - it's iOS 10.3.3 ... the latest. It freezes when browsing on my iPad Pro 2. It did the same on my previous iPad Pro., but I haven't noticed it happen on my iPhone. Only happens occasionally, and I haven't noticed any particular pattern.
May I know the version of your iOS? Are you seeing the issue with Safe Browser as well?
If you're not seeing the issue with Safe Browser and if it happens only with the other apps, you could try to uninstall our app and check if the issue with Safari/Mail is gone.