Use Lost Mode in Find My iPhone on iCloud.com
Lost Mode lets you lock your iPhone, iPad, iPod touch, Mac or Apple Watch so that others cannot access your personal information. You can turn on Lost Mode in Find My iPhone on iCloud.com.
Lost Mode requires a device that meets the minimum system requirements listed in the Apple Support article System requirements for iCloud.
To sign in to Find My iPhone, go to icloud.com/find.
What happens when you use Lost Mode or lock a lost device?
A confirmation email is sent to your Apple ID email address.
You can create a message for the device that says it is lost and how to contact you.
For an iPhone, iPad, iPod touch, Mac and Apple Watch, your device does not display alerts or play a sound when you receive messages or notifications, or if any alarms go off. Your device can still receive phone calls and FaceTime calls.
For an iPhone, iPad, iPod touch and Apple Watch, you see your device’s current location on the map, as well as any changes in its location.
For applicable devices, payment cards and other services are suspended.
Turn on Lost Mode or lock a device
In Find My iPhone on iCloud.com, click All Devices, then select the device you want to put into Lost Mode or lock.
If you do not see All Devices, it is because you have already selected a device. Click the name of the current device in the centre of the toolbar to access the Devices list, then select a new device.
Click Lost Mode or Lock.
Follow the onscreen instructions, keeping the following in mind:
Passcode: if your iPhone, iPad, iPod touch or Apple Watch has a passcode, it is required to unlock the device. Otherwise, you are asked to create a passcode now. If you are locking a Mac, you must create a numerical passcode, even if you already have a password set up on your Mac. This passcode is distinct from your password and is only used when you lock your Mac with Find My iPhone.
Family Sharing: if you are trying to place a family member’s iPhone, iPad or iPod touch in Lost Mode and the device does not have a passcode set, you must enter that person’s Apple ID password on this computer. If you are trying to lock a family member’s Mac, you must enter that person’s Apple ID password on this computer.
Contact information: if you are asked to enter a phone number, enter a number where you can be reached. If you are asked to enter a message, you may want to indicate that the device is lost or how to contact you. The number and message appear on the device’s locked screen.
Note: If you forget the passcode, or if you set an EFI firmware password on your Mac before it was lost, then lock it and later find it, you may need to take it to an authorised repair centre to unlock it.
Change your contact information on a lost device
After you mark your iPhone, iPad, iPod touch or Apple Watch as lost, you can update your contact information.
In Find My iPhone on iCloud.com, click All Devices, then click the iPhone, iPad, iPod touch or Apple Watch that is in Lost Mode in the Devices list.
If you do not see All Devices, it is because you have already selected a device. Click the name of the current device in the centre of the toolbar to access the Devices list, then select a new device.
Click Lost Mode, change the information, then click Done.
Turn off Lost Mode on an iPhone, iPad, iPod touch or Apple Watch
In Find My iPhone on iCloud.com, click All Devices, then select the device that is in Lost Mode.
Click Lost Mode, click Stop Lost Mode, then click Stop Lost Mode again.
You can also turn off Lost Mode by entering your passcode on the device.
Note: If you had any cards suspended when you put your device in Lost Mode (credit or debit cards for Apple Pay, or student ID cards or Express Travel cards), when you turn off Lost Mode and sign back in to iCloud, you can use them again.
Recover the passcode and unlock your Mac
In Find My iPhone on iCloud.com, click All Devices, then select the Mac that is locked.
If you do not see All Devices, it is because you have already selected a device. Click the name of the current device in the centre of the toolbar to access the Devices list, then select a new device.
Click Unlock, then follow the onscreen instructions to verify your identity with your Apple ID password.
Once you have your passcode, enter it on your Mac.
You can also use Find My on any device that is signed in with the same Apple ID. See Use Find My to locate people, devices and items.
If you cannot use Lost Mode because Find My iPhone is not set up on your lost device, see the Apple Support article If your iPhone, iPad or iPod touch is lost or stolen.