The G7 is one of several CGMs that are compatible with open-source insulin delivery systems. Since many community members are struggling with G7 connection issues, we’ve put our very best advice in one place.
Troubleshooting Tips (for when Dexcom isn’t staying connected to its own app)
Potential Fix (for when Dexcom is connected to its own app but won’t stay connected to Loop/Trio)
Medwatch (for reporting issues for when G7 won’t stay connected to the G7 app)
G7 Troubleshooting
If your Dexcom G7 readings are not showing up on your Dexcom app, these steps should help resolve this issue.
- Write-down the 4-digit sensor number from the Dexcom app.
- G7 > Connections > Sensor
- You may not need this sensor number, but it’s better to capture it just in case
- Quit both your Loop/Trio app and G7 app
- Forget all Bluetooth connections that start with DXCM
- Open G7 app
- Wait up to 5 minutes – you should get a new pairing request from G7 – accept it
- Open your Loop/Trio app
- Wait to see new value come in
Note that Loop/Trio will not backfill the missing G7 data that came in while Loop/Trio was closed.
Potential Fix
If your Dexcom G7 readings are showing up on your Dexcom app, but not within the Loop app, you can try this customization to improve G7 connectivity. There is an intermittent bug in which the Loop app does not pick up the G7 reading when a new one comes in and is available in the Dexcom G7 app.
- This is a new issue that a lot of people are reporting
- It seems to happen just with some phones and with some sensors
- It will NOT help if the sensor is not reporting values to the Dexcom G7 app
This customization implements a potential improvement for G7 connectivity with any of the Open-Source AID systems.
To view the code change associated with “g7_scan”, click on this URL and open the g7_scan.patch file in that folder.
Magnet Trick
If your G7 fails to pair, here’s a simple trick that might help. The sensor has a magnet-activated switch that flips on during insertion. If it doesn’t activate automatically, you can use the applicator (which contains a magnet) or even a regular magnet you have at home. Just run it around the edge of the sensor to activate it.
Medwatch
Consumers and patients can voluntarily report observed or suspected issues to the US FDA using Medwatch. Voluntary reporting can help the FDA identify unknown risk for approved medical products.
- any health-related test, tool, or piece of equipment
- health-related kits, such as glucose monitoring kits or blood pressure cuffs
- implants, such as breast implants, pacemakers, or catheters
- other consumer health products, such as contact lenses, hearing aids, and breast pumps
- prescription or over-the-counter medicine
- biologics, such as blood transfusions, gene therapies, and human cells and tissues transplant (for example: tendons, bone and corneas)
- nutrition products, such as vitamins and minerals, herbal remedies, infant formulas, and medical foods
- cosmetics or make-up products
- foods (including beverages and ingredients added to foods)