What for: To find your iPhone if it is lost or stolen.
The Find My iPhone service will help you find your smartphone in case it is lost. You can use it to determine the location of your device and sound its alarm, and remotely lock it or wipe its memory. This will protect your data from prying eyes even if you are unable to find your iPhone.
The device search feature works even without Internet access and if location services are turned off. In this case, your lost phone sends a special signal over Bluetooth that is received by other nearby Apple devices. After receiving the signal, these devices send their location to Apple and the company forwards this data to your account. Using this feature, you will be able to see the approximate location of your iPhone in the Find My app.
To turn on the search service:
- Open Settings.
- Tap your Apple ID.
- Turn on the following features:
- Find My iPhone
- Enable Offline Finding
- Send Last Location
You can find or lock a lost device by using the Find My app on any Apple device or at iCloud.com.
Activation Lock is also enabled when the Find My iPhone service is turned on. This feature prevents someone from signing in to your system with a different Apple ID, turning off the Find My iPhone feature, or wiping the memory without password confirmation. That means if your gadget ends up in someone else's hands, they will not be able to use it or sell it, except maybe for spare parts. They will not be able to disable the capability to search for it or lock it.
Please note: If you wipe the memory of your phone, the Apple ID data is also deleted together with your files. In this case, the location of the iPhone will no longer be visible on the map. Therefore, use the option only in extreme cases.
However, when the lock is enabled, your Apple ID data is saved on Apple servers linked to your device ID. This means that even after wiping all data, you can unlock your phone if you find it and enter the user name and password for your Apple ID.