Error trying to reconnect bonded device ncs v1.6.0

[nvelozsavino]

When I try to connect to a previously bonded device, I'm getting 

Disconnected (reason 0x3d)

and  bt_att: Unhandled ATT code 0x1d

and if I delete the bonds again and try to connect without pairing, I'm getting 

 bt_att: Unhandled ATT code 0x1d and the service discovery process is not working

Step to reproduce

1. Open ncs/v1.6.0/zephyr/samples/bluetooth/peripheral 
2. west build -b  nrf5340dk_nrf5340_cpuappns
3. west flash --erase
4. west flash
5. Using nrfConnect for mobile application scan and connect to "Zephyr Peripheral Sample Long Name"
6. Pair and Bond (the pin code will be shown in the console)
7. Disconnect
8. Connect again

It should connect, but instead it disconnect with reason 0x3d and the Unhandled ATT code 0x1d

Using the nRF Connect SDK v1.6.0 which is using Zephyr 2.6.0-rc1

Disconnected (reason 0x3d)

[Amanda Hsieh]

Hi Nicolas,

May I know the HW version on the white sticker of the board?

I cannot reproduce the issue with your instructions.  

Do you get "Disconnected (reason 0x13)" after Step 7. Disconnect? Are you able to provide the sniffer log?

-Amanda H.

[nvelozsavino]

version: 1.0.0

Right now I'm unable to get sniffer logs, however, I've tested with an older phone and it works fine. it seems there's a problem with the android version, nrf connect and/or the phone itself.

The phone that worked is a Galaxy A3 2017 (SM-A320FL) with Android 8.0.0

The phone that didn't work is Galaxy A40 (SM-A405FN/DS) with Android 11

 

[Amanda Hsieh]

Thanks for the info. I use Pixel 3a with Android 11 to test and it can work without issue. Seems the issue might be related to the phone, but need the sniffer log to confirm. 

-Amanda H.