The Find My iPhone app lets you track your iOS device if missing. You can also use it to lock your device remotely, play a sound, display a message or erase all the data on it. To track your iPhone or iPad with “Find My iPhone” app, you must have enabled it in iCloud settings on your device before it gets missing.
Once enabled, you can use the Find My iPhone app on any iOS device or use it via the Find My iPhone website. Once you sign in to Find My iPhone online or via the app, using your Apple ID, you will see the play sound, lost mode and erase icons. You can also select a device to view its location on a map.
Clicking on “Play Sound” will play a sound for two minutes at full volume (even if your device is set to silent) while clicking on the “erase…” will remotely erase all content and settings on your device. Note that after you erase a device, you can’t track it.
Using Lost Mode, you can remotely lock your device with a four-digit passcode, display a custom message with your phone number on your missing device’s Lock screen, and keep track of your device’s location.
What if your iOS device is off or offline?
If your missing device is off or offline, you can still put it in Lost Mode, lock it, or remotely erase it. The next time your device is online, these actions will take effect.