@pete-woods, you need to wait for org.ofono.SimManager to appear in the list of interfaces of Interfaces property for each modem. You can check at that moment Present property there and if Present=1, check LockedPins.
@pete-woods, you need to wait for org.ofono. SimManager to appear in the list of interfaces of Interfaces property for each modem. You can check at that moment Present property there and if Present=1, check LockedPins.