[hammock]

CGMs use bluetooth

[justinclift]

Bluetooth has a terrible reputation around reliability. :(

[pastage]

In the loop community (CGM+insuling pump) you usually have a list of phones that work well with Bluetooth. Yes that changes when the phones get new powersaving settings and driver updates, usually it works well on good phones.

[justinclift]

Yeah, that sounds like a practical approach for dealing with it. :)