I want a SIM to serve two purposes.
- Cheap data/easy to top-up as a backup, should my home internet go down - So hotspot/tether must not be blocked
- Ability to give my kid a phone on occasion, so they can contact me when out. It's not for socials (they're too young)… more for emergencies, pickups etc. Data only should be OK as we'll teach them to use Signal.
I would store it in a spare old phone for both purposes above. It would rarely get used, I'm most interested in some pack that is cheap and stays active for a long time.
Side note - Where I am Spark/Skinny infrastructure has the best signal but it's not essential.
Another note. Do people use family plans (i.e. shared data/calls) for this sort of thing? My personal plan has lots of data and this might work too having just thought of it.