Wake your iPhone, then touch and hold anywhere on the lock screen until you feel a buzz and see the wallpaper editor. You’ll see a carousel of lock screens you’ve created. Tap the “+” (Add ...

There are several ways to customize your iPhone ... iPhone's wallpaper through the settings app. Alternatively, tapping on ...

Use this option sensibly, however, and you will find learning how to extend your screen lockout time on iPhone becomes very ...