CGM features and fixes · SIBIONICS GS1

SIBIONICS GS1 signal loss: what the maker says to do

The phone must stay within 6 meters (20 feet) of the sensor with Bluetooth on. When communication comes back, the recorded readings fill in. (SIBIONICS user guide, p. 29; SIBIONICS user guide, p. 28)

What the maker says to do

1. Make sure Bluetooth is on.
2. Make sure the app has the Nearby Devices and Location permissions.
3. Keep the phone within 6 meters (20 feet) of the sensor.
4. Make sure no other phone or watch is connected to the sensor.
5. Restart the phone and connect to the sensor again.
6. If the problem continues, email [email protected].

The GS1 is not FDA-cleared and is not sold in the US; these answers come from SIBIONICS's EU/UK English user guide, its sibionicscgm.com pages and the UK App Store.

More on the SIBIONICS GS1

• Sensor error
• Warm-up
• Sensor failed early
• Alarms not sounding
• Compatible phones

Signal loss on other CGMs

• Dexcom G6
• Dexcom G7
• Dexcom ONE+
• Dexcom Stelo
• FreeStyle Libre 2 and 2 Plus
• FreeStyle Libre 3 and 3 Plus
• Medtrum TouchCare Nano CGM
• Eversense 365
• Medtronic Simplera

Sources, quoted

• SIBIONICS user guide, p. 29: “Check if the Bluetooth is turned on in the display device settings.”
• SIBIONICS user guide, p. 29: “Check if the App has obtained the Nearby Devices permission and the Location permission.”
• SIBIONICS user guide, p. 29: “If yes, keep the display device within 6 meters (20 feet) of the Sensor.”
• SIBIONICS user guide, p. 29: “Check if there is another display device connected to the Sensor (the Sensor cannot be connected to more than one device at the same time).”
• SIBIONICS user guide, p. 29: “Try restarting your display device and connecting to the Sensor again.”
• SIBIONICS user guide, p. 29: “If the problem still persists, contact our Customer Service at [email protected].”
• SIBIONICS user guide, p. 28: “When the Sensor completes the warm-up and restores communication, all the recorded glucose data is communicated to your display device.”

Every quote is checked against its source page before each update of this site; last checked 2026-10-06. Makers change their apps; the source page is the authority when it differs.