100% token not needed.
As nostr:npub18ams6ewn5aj2n3wt2qawzglx9mr4nzksxhvrdc4gzrecw7n5tvjqctp424 said, if you want to offer a hotspot running a Tollgate is better principally.
Discussion
Tollgate is a different product entirely, since it is the user paying the wifi provider directly. There's no reason someone couldn't create something similar to what you described, where the cell phone company pays the wifi provider in Bitcoin whenever their customers use the wifi, though.