Lock Screen

The Lock Screen is the first screen presented to a user before access is granted to an iOS or iPadOS device. If a passcode is set, the data on the device will be encrypted and a 4 or 6-digit numeric will be required. Face ID and Touch ID can be used to unlock devices that support biometric identification.

History
Starting in iOS 10, an Apple device without a passcode will present "Press Home to unlock" instead of "Slide to unlock". iOS 16 added the ability to customize the Lock Screen with TrueDepth images and widgets.

Articles

 * How to customize your Lock screen on iPhone and iPad by Joseph Keller and Rene Ritchie at iMore (2020-02-20)