code: def lost_device(
          self, number,
          text='This iPhone has been lost. Please call me.',
          newpasscode=""
      ):
          
          data = json.dumps({
              'text': text,
              'userText': True,
              'ownerNbr': number,
              'lostModeEnabled': True,
              'trackingEnabled': True,
              'device': self.content['id'],
              'passcode': newpasscode
          })
          self.session.post(
              self.lost_url,
              params=self.params,
              data=data
          )
docs: Send a request to the device to trigger 'lost mode'.
  
          The device will show the message in `text`, and if a number has
          been passed, then the person holding the device can call
          the number without entering the passcode.