I see the following message when using the Lingo app: Enable Bluetooth What it may mean: The Bluetooth setting on your phone is turned off. What to do: Go to your phone settings and enable Bluetooth. Need help? Please submit your request here. Related articles I see the following message when using the Lingo app: Signal Loss Why is there a gap in my glucose data? What is the maximum operating range (distance) of the Lingo app and biosensor? What if my biosensor comes off too soon? I see the following message when using the Lingo app: Biosensor incompatible