You’ll be asked to supply a four-digit passcode, which will be required to get into the app. Some apps, like WhatsApp, have a screen lock included. Screenshot: WhatsApp As far as Apple’s apps ...

you can use a new Lock Screen action to lock specific apps behind FaceTime or your iPhone's passcode, which is arguably the more secure method. If you want to make sure one of your apps is ...

But that encryption is only as good as the PIN or password that protects your Lock Screen. Not using a password renders all that iPhone security useless. Even if you have a password and combine it ...

You can disable Siri on the Lock Screen, so it might not work on all iPhones you pick up. While many tasks are unavailable without a passcode, Face ID, or Touch ID, there are actions Siri can take ...