How to lock your iPhone apps. 1. ... it will need your Face ID or passcode to open. You can't lock every app on your iPhone.

Therefore, you’ll also select the Is Open option when choosing the apps. This iPhone automation enables the orientation lock when you close one of your selected apps. Image source: Chris Smith, BGR ...

“Now when you hand someone your phone, just triple tap the lock button and click on Guided Access. “Put your settings to the same as mine so they’ll only be able to see that one photo.” ...