What Does the "Signal Loss" Alert Mean?

The Signal Loss alert in the BUZUD CGM system notifies you when your display device (such as a smartphone) is no longer receiving glucose readings from the transmitter.

Possible Causes:

  • The transmitter and display device are more than 20 feet (6 meters) apart
  • Obstacles like walls, water, or the human body are blocking the Bluetooth signal
  • The BUZUD CGM app has been closed or Bluetooth has been turned off

How to Fix Signal Loss:

  1. Keep your transmitter and display device within 20 feet (6 meters) of each other
  2. Wait approximately 30 minutes to allow automatic reconnection
  3. Do not manually close the BUZUD CGM app – it should always run in the background
  4. If the problem persists:
    • Turn your phone's Bluetooth off and then back on, and wait 10 minutes
    • Restart your smartphone and reopen the BUZUD CGM app
    • Close other background apps to free up system resources
    • Make sure your phone is charged and not in Low Power Mode, as this may disable Bluetooth

During Signal Loss:

Use a blood glucose meter (fingerstick) to check your glucose levels and make any necessary treatment decisions.
Do not rely solely on the BUZUD CGM during signal loss.

Additional Notes:

  • Once the transmitter reconnects to the display device, up to 15 days of missed glucose data can automatically be restored and displayed in your app’s graph
  • Apple Users: Unlike other alerts, the Signal Loss alert cannot play a sound or vibrate when your iPhone is in Silent or Do Not Disturb mode

If you frequently experience signal loss, check that your smartphone model is compatible, Bluetooth permissions are granted, and your phone’s battery settings allow background activity.
For further support, contact BUZUD Customer Service.