On iPhone, Apple includes a Rotation Lock feature that when enabled locks the screen orientation so that it doesn't change when you rotate the device. Rotation Lock is usually enabled or disabled ...

Auto-Lock on iPhone automatically turns off your screen after a set period of inactivity — helping to save battery and avoid accidental taps. Turning off auto-lock or extending the time period ...

The ability to set live photo backgrounds, aka live wallpapers, is a customization feature that iPhone users don't have to wait for -- turning the lock screen into a dynamic, personal showcase.