Locking a device forces the user to enter a password to access the device and prevents the user from reversing this restriction. The user is informed of this action via email. If the user has set a password for the device, then that password must be entered.
- Go to Device & Users > Devices.
- Select the check box for the device.
- Select Lock from the Actions menu.
The Lock dialogue for an iOS device displays additional options for you to enter a contact number and a message. The Lock Message field allows you enter up to 500 characters. The contact number and the message appear on the screen for the device you locked. The device user can call the number displayed on the locked device.