How to block your phone in case of loss or theft?

To block your device in case of loss or theft, it is extremely necessary that the Anti-Theft function is active, the device is turned on and connected to the internet.
(Please keep in mind that his function is exclusive for Premium users)

đź‘€Follow the steps below:

  1. Access the and click on “Sign in with Google account”
  2. Log in with the same Google account registered in Anti-Theft of your dfndr security
  3. Wait for loading
  4. Click the green “Block” button to get your device’s location
  5. Create a personalized message that will be visible on the screen of the locked phone and then click on the “Lock screen” button to send the command.

đź‘ŤAttention: If the lost/stolen device is not communicating with the internet or turned off, you will receive a message indicating that the lock command has been sent to the cell phone, but will only be executed when the device is turned on and connected to the internet again.

If you still have questions that are not addressed here, please contact us at