I’ve lost my iPhone
There are two aspects to consider when you lose your iPhone or if it’s stolen. The first is the recovery of the device; the second, the security of your data. Using the lock screen with a code or password (and Touch ID if you have an iPhone 5s) will make it difficult for a thief to access the important stuff.
Switch ‘Find My iPhone’ on now in Settings if you have an iCloud account. If you don’t, create one and switch Find My iPhone on. If you’re using iOS 7 or later, this also switches on Activation Lock to prevent anyone turning off Find My iPhone or wiping your iPhone without entering your Apple ID and password.
Log into icloud.com on a Mac and select Find My iPhone, or use the Find My iPhone app on another iOS device.
When you launch the app you’ll see your devices listed. Tap the one you want to find. You’ll be shown a map with the device on it (if Find My iPhone can locate it). To see the location in Maps and get directions, tap the car icon at the top-right of the screen. If you suspect it’s been stolen, inform the police and take a screen grab (Home and Sleep/ wake buttons together) of the location.
To lock your device or send a message to it, tap in the middle of the map and tap Lost Mode at the bottom of the screen. From here you can lock the device with a passcode, send an audio tone to it, or send a message to display on the screen. Send a message asking for its return and include a contact number. You’ll get emails from Apple confirming the action you’ve taken.
Find My iPhone is a great feature that can turn up some interesting info about the location of your lost iPhone.