Don't see your device on or in the? If Find My iPhone is off, turn it on. Maybe you signed in to iCloud. To check, sign in to Find My iPhone or iCloud. For example, to locate your Mac or Apple Watch, it must connect to Internet through a known Wi-Fi network not Ethernet. If you can access your device and see that it has an active Internet connection, turn on and back off. Turn your device off and back on. Check that Set Automatically is on, which. With the same Apple ID, you can register up to 100 devices for Find My iPhone. If you need to add a device after you registered 100 others, remove a device first. When your device is connected to the Internet, you can see the remaining battery in the upper-right corner of the information pane. Wait a few minutes and try again. This feature might not be available in your country or region due to technical limitations or local law. You can still play a sound, send a message, issue a lock request, or start an erase of your iOS device with Find My iPhone. Your device receives the command after you turn on your device and connect to the Internet. If you contact your wireless service provider to report your device lost or stolen, they might deactivate your SIM card or account. This turns off service for your iPhone and you won't be able to find, play a sound, send a message, issue a lock request, or start an erase of your iOS device with Find My iPhone. However, we'll help you. Your device's last known location is available for one day. If your device is offline or can't connect to Find My iPhone for more than 24 hours, you won't be able to see the last known location. Before you sell or give away your , , , or , sign out of iCloud and erase all content and settings. When you sign out of iCloud from your device, iCloud turns off Find My iPhone and removes the device from your list. If your device is currently offline, you can remove it. Go to and click to the right of the device name. Or, from the Find My iPhone app on your iOS device, swipe over the device name and tap Remove. If your device comes back online and Find My iPhone is on, your device automatically reappears in your device list. Log out of your account, log back in with an administrative user account, and then try to turn on Find My Mac. From the Apple menu, choose Software Update, and make sure you install the Recovery HD Update for your version of macOS. Try to with Disk Utility. Information about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement. Apple assumes no responsibility with regard to the selection, performance, or use of third-party websites or products. Apple makes no representations regarding third-party website accuracy or reliability. Risks are inherent in the use of the Internet. Other company and product names may be trademarks of their respective owners.