[Bug]: Bluetooth (re) connectivity problem

[alligitor]

Category

BLE

Hardware

RAK4631

Is this bug report about any UI component firmware like InkHUD or Meshtatic UI (MUI)?

• Meshtastic UI aka MUI colorTFT
• InkHUD ePaper
• OLED slide UI on any display

Firmware Version

2.6.4

Description

I have recently upgraded my RAK4631 to 2.6.4 and my iOS app to 2.6.6 (1457).
I used to run FW 2.5 and what I'm describing is new after the upgrade.

My app will not reconnect to the radio if:

• It's connected

• Phone goes out of range and I don't cleanly do a "disconnect" from the app.
  For example, my phone is connected to the radio.
  I leave the radio behind and go down the street for a few minutes.
  When I come back, the app sees the radio, attempt a reconnect, but reports back a "bluetooth timeout".
  Connection will not be made until I reboot the radio.

• so far it seems like doing a disconnect manually, then going out of range, will not result in this issue.

I have tried a few things on the app side to no avail.

• kill the app and restart
• disable bluetooth on the phone, renable, and attempt to connect again.

Relevant log output

[caveman99]

Do you have another phone paired to the same radio? I have seen phones 'fighting' over the connection. Also please check if this problem still persists with the latest tech preview.

[alligitor]

1- the hardware is a RAK4631, not Heltec V3. got the two confused.
2- As for phones fighting, the chances are minimal. I have other phones that have paired with other radios but not this one. Is there a chance that an app on a phone, not paired with this RAK4631, tries to connect anyways?

Are there logs I can somehow get to help?

It seems like the problem is on radio side because rebooting it solves the issue, but to be sure: Any suggestion as how to isolate the issue between the app and radio?

[alligitor]

@caveman99 what exact version should I try? 2.6, 2.7, ...?