Bluetooth pairing problem with iOS

[alireza sadeghpour]

Hi,

I am developing a product, based on nrf52840 soc with SDK v15.3 and softdevice V14. I have a pairing problem with the recently released iOS, version14. while my product works well with older iOS versions and all android devices.

The problem is in this manner that, my device sends a pairing request to the iOS14 but iOS doesn't respond to the request and the request encounter with a timeout. the same problem occurs when I try to pair with iOS14 with the nrfConnect desktop version (which uses PCA10056 as a BLE adaptor).

But I could pair iOS14 with the nrfConnect android version and windows BLE interface.

i have attached the sniffer log for 

1) My product fails to pair with iOS14. ->  3187.ios_pair_failure.pcapng

2) Windows pairs successfully with iOS14. ->8372.ios_pair_success_windows.pcapng

Could anyone help me to solve the problem?

thanks

[Simonr]

Hi

You said in your last reply that you call the pm_conn_secure function as part of the BLE_GAP_EVT_CONNECTED event, can you waiting for the insufficient authentication error message before you send the pairing request from your central device?

I will take a closer look at the two pairing requests and come back to you with any updates, but please update me whether moving the pairing request does anything for you.

Best regards,

Simon

[alireza sadeghpour]

Thanks for your attention,

I've tested that (waiting for BLE_GAP_EVT_CONNECTED to initiate the pairing process), but it didn't change anything and the problem is still remaining.

Bests

[alireza sadeghpour]

I meant "waiting for insufficient authentication error message to initiate the pairing process"