I have been testing some SIM-cards from 1nce.com
they cost 10Euro for 500MB and they last 10 years (no monthly cost) perfect for testing.
Have rooming all over the world.
PT
Do they support LTE-M/NB-IoT and how’s the worldwide coverage?
Looks like Africa have some white spots on the map.
they support 2G,3G,4G,LTE-M,NB-IoT
Found a even better IOT-SIM this time from brother Sweden https://www.netmorem2m.com/
It really start to come down in price now 