When you receive a Signal Loss message, this means that the Sensor has not automatically communicated with the FreeStyle Libre 2 app§ in the last 5 minutes.
You should make sure your phone is within 6 meters (20ft) of the Sensor. Try scanning the Sensor to get a glucose reading. Then try turning Bluetooth® OFF then ON again. If that doesn’t work, try turning your phone OFF and ON again. If Signal Loss message shows again, contact customer service.
§The FreeStyle Libre 2 app and the FreeStyle Libre 2 reader have similar but not identical features. Finger pricks are required if glucose readings or alarms do not match symptoms or expectations. The FreeStyle Libre 2 sensor communicates with the FreeStyle Libre 2 reader that started it or the FreeStyle Libre 2 app that started it. The FreeStyle Libre 2 app is only compatible with certain mobile devices and operating systems. Please check the website for more information about device compatibility before using the app. Use of FreeStyle Libre 2 requires registration with LibreView.
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