One Plus 5T Cannot connect to BLE

RE: One Plus 5T Cannot connect to BLE

Simonr — Mon, 20 Dec 2021 08:17:19 GMT

I think most Android devices aren't able to connect with connection intervals lower than 15ms, so setting the minimum to 15ms for example, and leave the maximum at 30 or try increasing it to 100ms should give good results. If you're still running into these errors, I think you have to include some retries to the connection process on the nRF side.

Best regards,

Simon

RE: One Plus 5T Cannot connect to BLE

you can123 — Fri, 17 Dec 2021 08:55:34 GMT

OK, let me try it, are there any suggested parameters?

RE: One Plus 5T Cannot connect to BLE

Simonr — Fri, 17 Dec 2021 08:51:26 GMT

Well, you can also try implementing a delay between connection attempts to mitigate these disconnects as well.

Another thing that's not guaranteed to work, is to tweak the connection parameters a bit (mainly increase connection intervals) to see if that makes it occurrences rarer.

Best regards,

Simon

RE: One Plus 5T Cannot connect to BLE

you can123 — Thu, 16 Dec 2021 13:44:45 GMT

Are there other ways to avoid this error?

RE: One Plus 5T Cannot connect to BLE

Simonr — Thu, 16 Dec 2021 13:18:41 GMT

Hi, the 133 GATT error is an infamous one that's unfortunately still present in some Android phones. I would suggest that you either try adding a few retries or a delay when connecting to GATT in your application, to see if that fixes these connection issues.

Best regards,

Simon