Lost Mode, remote wipe, and remote lock
If a supervised iOS or iPadOS device with iOS 9 or later is lost or stolen, an MDM administrator can remotely enable Lost Mode on that device. When Lost Mode is enabled, the current user is logged out and the device can’t be unlocked. The screen displays a message that can be customized by the administrator, such as displaying a phone number to call if the device is found. When the device is put into Lost Mode, the administrator can request the device to send its current location and, optionally, play a sound. When an administrator turns off Lost Mode, which is the only way the mode can be exited, the user is informed of this action through a message on the Lock screen or an alert on the Home screen.
Remote wipe and remote lock
iOS, iPadOS, and macOS devices can be erased remotely by an administrator or user (instant remote wipe is available only if the Mac has FileVault enabled). Instant remote wipe is achieved by securely discarding the block storage encryption key from Effaceable Storage, rendering all data unreadable. A remote wipe command can be initiated by mobile device management (MDM), Microsoft Exchange ActiveSync (for iOS and iPadOS), or iCloud. On a Mac, the computer sends an acknowledgment and performs the wipe. With a remote lock, MDM requires that a six-digit passcode be applied to the Mac, rendering any user locked out until this passcode is typed in.
When a remote wipe command is triggered by MDM or iCloud, the device sends an acknowledgment and performs the wipe. For remote wipe through Microsoft Exchange ActiveSync, the device checks in with the Microsoft Exchange Server before performing the wipe. Remote wipe is not possible in two situations:
With User Enrollment
For iOS and iPadOS, using Microsoft Exchange ActiveSync when the account that was installed with User Enrollment
Users can also wipe iOS and iPadOS devices in their possession using the Settings app. And as mentioned, devices can be set to automatically wipe after a series of failed passcode attempts.