Thanks for that info and choosing the Apple Support Communities. If I understand correctly, you are having issues with your iPhone not behaving as expected. If you haven't already, please restart your device as iOS clears cached data and does other system optimizations when you turn your device off and on.
If you're still having an issue, your next step is to reinstall iOS on your device; this will help us isolate the situation further. Reinstalling iOS should not affect any of your data, but it is always a best practice to make sure you have a current backup in either iTunes or iCloud.
Use the “Update” option and not “Restore” and these steps will reinstall iOS. Keep in mind that these steps were written for a different issue, but they will still help us isolate the situation further.