I am not new to pump therapy. I have a new Tandem MOBI and Dexcom G7 Sensor. I constantly get Out Of Range notices. After spending an entire day chasing the problem with both Dexcom and Tandem they replaced the pump.
Dexcom did have me go into my iPhone Bluetooth setting and delete all the DX connections except the top two. They told me to delete the third one down anytime I change a sensor.
I put the new pump in service yesterday, and the same problem exists. We have changed sensors, restarted the pump, unpaired and repaired the pump. The phone, pump, and sensor are all on the same side of my body. The phone is right next to me. The G7 App works fine, or appears to.
If you have insight into this issue; I would love to hear from you.
I can experience the same problem. But, first you have to understand that you iPhone does not need to connect to the G7: the iPhone gets its readings from Mobi that connects to the G7. The issue is the Mobi needs to be close to the G7 as it is not as powerful as the phone. For me it has problems if my body gets in the way, such as I have the G7 on my left arm and the Mobi on my right side somewhere. For me, I wear them a few inches apart on my hip area. Other than that, I love the devices that are so inconspicuous. I hope this helps.
Thank you for the response. As I stated everything was on the same side of my body, and close together. I did finally resolve the problem, at least so far it appears to be working correctly.
My Endo had me move the sensor to my stomach, with Dexcom’s approval, and it fixed it. It has now worked two full days without any signal loss. I love the system, and smaller foot print. It works as well as my T-slim did.
Moving the G7 to my stomach has allowed me to get direct to watch readings consistently. It’s funny that they changed the preferred placement from stomach to arm when they switched from G6 to G7 because G7 connectivity seems to work much better on the stomach. I used the G6 on my arm and it didn’t have connectivity issues (though admittedly there was no direct to watch to have issues with.) I find stomach and arm accuracy the same.
I agree. I started my first G7 sensor today with a brand new Apple Watch on my arm and had this mental picture of the direct signal from abdomen to wrist. It made me feel confident that the watch purchase would turn out to be worthwhile. Then I looked at the instructions and was surprised to see the back of arm as the only approved site. I wonder if they will try to weasel out of replacing abdomen sensors that die prematurely?
I think it’s just that practically they have to select a sight for the clinical trials and arm placement was the more popular choice. When I had a problem with a G6 that I’d placed on my arm they just mentioned that I needed my doctor’s approval for the alternate placement and I said I had it and that was the end of the story. No problem getting a replacement sensor.
I don’t think they’re trying to pull a fast one, but clearly someone didn’t think ahead to direct to watch because in my experience direct to watch pretty much requires stomach placement.
Dexcom did a minor redesign of the G7 to improve the bluetooth. The FDA approved the change 4/23/2023. Figure ~6 months until devices start to appear in the wild.
Tandem told me I needed to get permission from my doctor to use my stomach. He gave permission, and in fact told me I could put it anywhere. Verbal approval is all you need. It totally resolved my problem.
