Until today I was using my wife’s smartphone to control my G6, however today I received a new phone which has BLE 4.2 (my old one, a Sony Xperia Z) did not. I copied the settings from my wife’s phone with the QCode, rapidly disabled mine as master (so it was a follower; my wife’s was still set to master obviously) then waited for a connect. This is using xDrip+, not the Dexcom app which never worked for me.
What happened next has been reported elsewhere with no attempt to explain why it happens; no connect. I did however take a careful look at what happens; my new phone temporarily connects to the transmitter, says something like “authenticating” (ha ha, software developers think their users are some kind of all seeing demi-god with instant visual cognition.) Then it stopped.
The error logs show that my new phone is getting authentication failures from the transmitter (it isn’t near enough to my Contour Next BG meter to communicate successfully, but anyway, when it was it was getting packets just fine.)
So at this point I suspect or other of:
- The G6 transmitter only supports one ‘master’ and therefore if you damage the master you have to eject the sensor and start a new one with the new master (an operation which, in the US, is as expensive as buying a new smartphone.)
- Maybe the transmitter only supports two connections per session (per sensor); so if one of the connected devices fails you simply cannot connect a second. I’ve tinfoiled my Dexcom receiver (I also did “shutdown” but quite frankly I don’t trust the people who write this software.) So I can try in a couple of days time to see if the transmitter resets independently of the sensor, but I don’t have much hope for this.
- Major disaster: the transmitter is hardwired to the first two connections it sees, so I have to actually replace the transmitter to replace my cellphone. That would be ridiculous, but then that’s entirely believable.
I’m therefore somewhat interested in whether anyone has managed to connect three devices to a G6 transmitter or whether anyone has managed to replace their cellphone without either junking the sensor or, horrible possibility, junking the massively overpriced transmitter.