Andriod BLE double pairing after first use

[taspon98]

Hi,

I notice that some Andriod devices (Pixel 6A running Andriod 15 Beta and Samsung S22) are initiating paring twice during bonding. However, the issue goes away for the first usage after the device is flashed again. Not entirely sure what is going on.... This is on both SDK 2.5.0 and 2.7.0.

[Simonr]

Hi

Two pairing popup windows is indeed a bug we've seen before, and the reason seems to be because two BLE events are trigging pairing both upon connection and upon errors in the PM handler which triggers on some phones, and not on others. It seems to generally be caused by how the OS handles pairing requests, and we've not found a good way around this yet I'm afraid.

Best regards,

Simon

[taspon98]

Thanks for the response! Out of curiosity, do you happen to know what the two BLE events are? I have also tried disabling MTU exchange and setting CONFIG_BT_GATT_CLIENT=n, which didn't really fix this issue.