Mobile broadband modem : mbim PIN required

On OpenWRT 19.07.7, I installed "umbim" (command line tool for controlling mobile broadband modems). I have a "sierra em7355" (vid:pid : 413c:81a9 , Gobi5000 / Qualcomm MDM 9615 chipset). Using a "google fi" SIM card.

"umbim -d /dev/cdc-wdm0 caps" looks good ("hardwareinfo: EM7355", etc)

I set the config :


... but when I do "ifup wwan", it says :

daemon.notice netifd: wwan (6652): mbim[6652] Checking pin
daemon.notice netifd: wwan (6652): required pin: 3 - pin2
daemon.notice netifd: wwan (6652): remaining attempts: 10
daemon.notice netifd: wwan (6652): mbim[6652] PIN required

... so I modified /lib/netifd/proto/ and commented out the "return" after "umbim pinstate" and when I did "ifup wwan" it works fine.

So ... is this a bug or should I put something in network.wwan.pincode to fix this ?

FYI, it works fine in Fedora.

umbim and uqmi are very OpenWRT specific and PIN/PUK is very poorly handled.
You should try ModemManager, which is certainly the one used in Fedora.
Now ModemManager can be used on OpenWRT with QMI or MBIM modem.
You should have to add luci-proto-modemmanager as it is not included by default in the release.

Can you put the SIMcard in a normal phone and turn off the PINcode?

See this: