1. Tap Devices, then tap the name of the device you want to erase.
2. Tap Erase This Device, then tap Erase This [device].

   If the device is a Mac, enter a passcode to lock it (you need to use the passcode to unlock it).

3. If the device is lost and you’re asked to enter a phone number or 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 Lock Screen.
4. Tap Erase.
5. Enter your Apple ID password, then tap Erase again.

If your device is offline, the remote erase begins the next time it connects to a Wi-Fi or cellular network.