You have just described how a lot of MVNO operators work.
In France, you can get an unlimited subscription for 20€ / month.
As far as I remember, no strings attached, no phone either unless you want to, unlimited voice, texts and data. There is some kind of data cap, it is pretty high and if you reach it, you don't have to pay anything, your speed might just be limited for the month (although it has never happened to me afaik).
In France, you can get an unlimited subscription for 20€ / month.
As far as I remember, no strings attached, no phone either unless you want to, unlimited voice, texts and data. There is some kind of data cap, it is pretty high and if you reach it, you don't have to pay anything, your speed might just be limited for the month (although it has never happened to me afaik).
It is also unlimited in many other countries.