Find My iPhone overview
Locate your device on a map
Play a sound on your device to help you find it
Use Lost Mode to lock and track your device
Remotely erase all of your personal information from the device
With iOS 7 or later, Find My iPhone includes a new feature called Activation Lock, which is turned on automatically when you set up Find My iPhone. Activation Lock makes it harder for anyone to use or sell your iPhone, iPad, or iPod touch if it’s ever lost or stolen.
With Activation Lock, your Apple ID and password are required before anyone can:
Turn off Find My iPhone on your device
Sign out of iCloud on your device
Erase and reactivate your device
For more information, see the Apple Support article Find My iPhone Activation Lock in iOS 7.
Access Find My iPhone from any computer at icloud.com/#find, or download and use the free Find My iPhone iOS app. If you’re having trouble with Find My iPhone, see the Apple Support article Troubleshooting Find My iPhone.