> > Does ModemManager support SIM application tool kit with proactive SIM > > commands? My assumption is most of these SIM application tool kit > > commands should be handled by the modem but I'm unclear what is the > > role of host CPU / ModemManager in these commands? For example, many > > SIMs support multi-IMSI i.e. depending on the location, a particular > > IMSI is used for network connection. When a SIM changes its IMSI, the > > SIM application tool kit applet sends a REFRESH proactive command to > > the host device (or modem). This instructs the device to re-read the > > data on the SIM, including the new IMSI. > > Currently, ModemManager does not support any SIM application tool kit > commands. SIM toolkit apps displaying emergency numbers etc. are > currently not possible with ModemManager. > > > > > So how shall ModemManager know that IMSI has been changed and what it > > is supposed to do? What is the role of ModemManager in handling these > > commands? > > If the modem emits an AT URC / QMI / MBIM Indication, ModemManager > might be able to handle it, but I'm not sure. >
This is right. As we don't support generic SIM STK operations in MM. We currently only support the multi-IMSI scenario on QMI modems when they send an explicit notification about the change (e.g. UIM Refresh indication, see 5c0db3743209b78d8c7b7558e337e6df25951bae). I actually need to investigate the IMSI switch procedure while in MBIM, it's in my TODO list for the next weeks. I assume that maybe using the STK service we could be notified of the same. -- Aleksander
