The best hidden IOS functions that you can turn on in Settings
44 Save audio texts
To prevent audio messages expiring after two minutes, go to Settings>messages>audio Messages and change the ‘Expire’ option to ‘Never’.
45 Auto-erase
If you lose your iphone and want to protect your data, go to Settings>face/touch ID & Passcode and turn on the ‘Erase Data’ option.
46 Full-screen calls
If you prefer the old, full-screen format for incoming calls, go to Settings>phone>incoming Calls and then change the option to ‘Full Screen’.
47 Stop tracking
To stop apps from tracking you outside of the app, go to Settings>privacy>tracking and turn off the ‘Allow Apps to Request to Track’ option.