xDrip randomly stopped connected to G7 sensor with various errors

[BrianAllred]

xDrip version: aee9315-2024.09.19
Phone: Pixel 9 Pro Fold
Sensor: Dexcom G7
Pump: Tandem t:slim X2

I changed sensors Tuesday (9/24), started the sensor with my pump, and then connected to the sensor with xDrip. Everything was fine and I was getting readings on both my pump and phone.

Starting last night / early this morning, xDrip has stopped connecting to the sensor with various "Scanning Errors" and "Initializing Errors" and sensor status says "Mismatch - wait".

To my knowledge, I didn't change anything in xDrip or my phone to cause this. I didn't install any system updates.

I tried uninstalling and reinstalling xDrip, which did not work. I continue to get accurate sensor readings through my pump, so I don't think it's the sensor.

[Navid200]

This is usually caused by not having disabled battery optimization correctly.
Can you show a screenshot?

[BrianAllred]

That might've might've caused the initial issue, but I made sure when I reinstalled that battery optimization was set to unrestricted.

I think somehow the Bluetooth pairing on the device got messed up. I unpaired all Dexcom devices (which there were only two, since this is a relatively new phone), then uninstalled and reinstalled the app again. After a few connection tries, it finally paired with the sensor and started getting readings again.

Note that I know Bluetooth is buggy sometimes, and my very first troubleshooting steps with sensor reading issues are always to toggle Bluetooth off and on, and then, if that doesn't work, reboot the phone.

So yeah, not entirely sure what fixed it, but it's good now. I guess I'll add "unpair the sensor in Bluetooth settings" to the troubleshooting list, lol.

[Navid200]

No, Bluetooth is not buggy.

You also need to set Legacy Bluetooth to unrestricted.
Have you done that?

[BrianAllred]

I'm not sure, where's that setting?

[Navid200]

Go to Android Settings -> Apps -> See all apps

Now, tap on the ellipsis (3 dot) menu and tap on Show System.
Now, scroll down and you should find Bluetooth Legacy.

[BrianAllred]

Set it to Unrestricted, we'll see if that helps. Thanks!