If you misplace your iPhone, Find My iPhone can help you locate it and protect your data. Use the Find My iPhone app on another iPhone, iPad, iPod touch, or Mac or the web app at www.icloud.com/find to locate your iPhone on a map, lock it remotely, play a sound, display a message, or erase all its data.
Note: For more information about Find My iPhone, please refer to the Help in the app.
Turn on Find My iPhone. Go to Settings > iCloud > Find My iPhone.
Important: To use these features, Find My iPhone must be turned on before your iPhone is lost. iPhone must be able to connect to the Internet for you to locate and secure the device. iPhone sends its last location prior to the battery running out when Send Last Location in Settings is turned on.
Use Find My iPhone. Open the Find iPhone app on an iOS device, or go to www.icloud.com/find on your computer. Sign in, then select your device.
Play Sound: Play a sound at full volume for two minutes, even if the ringer is set to silent.
Lost Mode: Immediately lock your missing iPhone with a passcode and display a custom message on the screen with a contact number. Find My iPhone tracks and reports the location of your iPhone, so you can see where it’s been. When your iPhone is in Lost Mode, Find My iPhone attempts to suspend or remove the ability to pay with credit and debit cards used for Apple Pay (iPhone SE, iPhone 6, iPhone 6 Plus, and later).
Erase iPhone: Protect your privacy by erasing all the information and media on your iPhone and restoring it to its original factory settings. Erasing iPhone also removes the ability to make payments using your credit and debit cards used for Apple Pay (iPhone SE, iPhone 6, iPhone 6 Plus, and later).
Note: Before selling or giving away your iPhone, you should erase it completely to remove all your personal data and turn off Find My iPhone, to ensure the next owner can activate and use the device normally. Go to Settings > General > Reset > Erase All Content and Settings.