This would be very useful. And also an option to “prefer SIM A” would be helpful. I have a device set up with SIM A with a big data plan and SIM B as backup with a small data plan. At some point SIM A didn’t work so it failed over to SIM B and now is stuck on SIM B and won’t go back to A even though B has dropped a few times. It would be nice to be able to schedule an attempt to go back to A (e.g. at 2:00am if you’re on SIM B then try to fire up SIM A again and see if it is working) since SIM A is the preferred provider and data plan.