Use AVG AntiVirus App to Locate, Lock, Unlock, or Wipe ... Go to any computer and visit AVG's Anti-Theft Web page at . Login with your Google account. Select the appropriate option, such as Shout, Locate, Lock, Unlock, Wipe, or Scan. You can use the Shout option to make the device sound an alarm. Essentially, this will play a ringtone on the device.