The device name has disappeared from the Android Bluetooth list.

[moon.kim]

Hi.

I had to unpair from the Android Bluetooth list by doing pm_peers_delete () when bonding.
It's ok. I know why it should.
But sometimes I can't find my paired device in the Android Bluetooth list.
I must unpair before I can pair again. But I can't unpair because I don't see the device in the list.

Eventually I have to reset the network settings.

After that I can pair again.
Why do these symptoms occur?

[Simonr]

Are you using an Android app to connect and bond to these devices or just the default phone Bluetooth list? If you're using an app, is it the nRFConnect app or something else?

Best regards,

Simon

[moon.kim]

I use nRF ToolBox app.

and Search and Connect using in App.

What would make the device invisible on the Bluetooth list?

[Simonr]

moon.kim said:

Search and Connect using in App.

 I'm sorry, but what "Search and Connect" are you using in the app? Can you also specify what application you're using and what device on the nRF side? Is this using a DK and one of our examples or what? I'm not aware of anything that should cause a device to go invisible like you're describing.

Best regards,

Simon

[moon.kim]

sorry.
I was a bit clumsy to explain.
I'm developing with a custom board and programmed using nordic's Glucose example.
I used BGM in the Nordic ToolBox App.

However, this symptom occurs even with the Glucose  example source and nRF52 DK board.

This order : 

1. Pair the DK board with the BGM app.

2. Disconnect and unpair 'Nordic_Glucose' from the Bluetooth list in Android settings.

3. press 'connect' again in APP, the message 'Error on connection priority request(19)' is displayed.

4. press 'connect' again in APP, and Pair with app.

5. The connected device name is not displayed in the Bluetooth list of Android settings. But now Bluetooth is connected. Thereafter, this device name will not appear in this list.

thank you