As I mentioned a while ago, it has always been a hit-or-miss for me Cell Broadcast Alerts in Denmark - #2 by adekker
@abranson I do have two SIMs (both Vodafone NL), SIM1 (ril_0) gives me an empty Topics value, while SIM2 (ril_1) gives me a Topic of 0-999. I now have set the value of 0-999 also for ril_0, so they are both the same. I will keep an eye on this and see if it will get me consistent results. I am a bit sceptical about this, given the fact that Jolla has not been able to give more information about this subject in a those years people ask about it in this forum.
Btw this is the command to set the Topics value:
dbus-send --system --print-reply --dest=org.ofono /ril_0 org.ofono.CellBroadcast.SetProperty string:“Topics” variant:string:0-999
Edit: now have set values to 0-9999 for good measure.