Frequent disconnection - Disconnected, reason 8

[Mathangopal]

Hi. I am currently using a custom nRF52840 board.

I am able to connect and pair with both IOS and android via BLE. However, the IOS have some issues.

After 45 minutes, The device disconnects with IOS with reason 8. The weird thing is that it only happens with IOS.

Then, it auto reconnects then the session key exchange starts and finished with another disconnection reason 8.

I require some support in this. I will appreciate the help given.

Thank you.

[Einar Thorsrud]

Hi,

If iOS disconnected deliberately, you should get disconnect reason 0x13 (BLE_HCI_REMOTE_USER_TERMINATED_CONNECTION) instead of 0x8 (BLE_HCI_CONNECTION_TIMEOUT). So it looks like something unexpected happened. Which connection parameters are used here? Can you make a sniffer trace of the time of disconnect?