The latest update to Apple's device-tracker app features a new, streamlined interface along with a new perk for missing iOS devices: Lost Mode. Enable Lost Mode on your gadget, and it will lock itself and display a phone number and a message on the screen. Your lock screen wallpaper is replaced with Apple's grey linen texture, and the message and number displays on-screen with a big green Call button.

But just in case your device gets, say, thrown in a dump truck and zooms around town, Lost Mode will make a map of its movements that you can view on using grey pins and an orange dotted map. You can see your device's current battery level, too. (If you tell it to, the app will also send you email updates as the device moves.)

Once your phone has been unlocked, or you've disabled Lost Mode from the app or iCloud.com, it returns to its normal state and stops tracking movement.