What to do if your phone can't communicate with your sensor during activation.
A scan error message means your phone could not communicate with your sensor via NFC. Try scanning again using the following tips:
Hold your phone directly against the sensor. For iPhones, use the top edge of the phone. For Android phones, use the back of the phone.
Remove any thick clothing between your phone and the sensor.
Move away from household appliances that emit electromagnetic waves (microwaves, Wi-Fi routers, baby monitors).
If you're still unable to scan, restart your phone and try again.
Note: The exact location of the NFC antenna varies by phone model. If you're having trouble, try searching for your specific phone's NFC position online.
For a full walkthrough of the sensor activation process, see Getting Started with the Libre 3 Plus Sensors.
Need Help?
Our team is always happy to assist. Reach us at [email protected] or through our in-app messenger.