Extended advertising (nRF52833 + S140) - Samsung S20+ can't connect, Huawei P30 can

[MatevzB]

So, we have a problem that the new Samsung S20+ phone is not able to connect to the nRF52833 if extended advertising is enabled (using nRF Connect for Mobile app).

The phone can see the device, but fails to establish the connection with the device in either PHY_1M or PHY_CODED modes. There is no event generated in the firmware when connection is being established. The phone shows 'Connecting' and then times out. If extended advertising is disabled, the phone can connect to the device with PHY_1M.

On the other 'hand', we have a Huawei P30, which has no issue connecting to the same device in either mode.

I would contact the Samsung support directly, but I guess Nordic has better 'ties' with appropriate engineers at Samsung...

[Simonr]

Hi

This seems very strange indeed. Do you get any error code in the nRFConnect app? Do you see this error when the PHY_1MBPS is set to both primary and secondary PHY? Does it work if Coded PHY is set as both primary and secondary PHY?

I also think you should contact Samsung support, but we don't have any "ties" with their engineers for additional support, and we suggest using their regular support channels.

Best regards,

Simon

[MatevzB]

Indeed, the Samsung device is unable to connect even if both are set to PHY_1MBPS, while Huawei has no issue.

No, there is no error displayed in the app - it simply times out.