[vladvasiliu]

Above what the sibling said regarding branding and pre-installed crap-ware, they still make a distinction between "on device" use and "modem use".

Source: read the fine print on an offer from my provider, Bouygues Telecom.

My regular plan has 40 GB, which I can use on the phone or tethered. This summer I was spending a lot of time at my parent's and their land internet connection was spotty. At the same time, Bouygues ran a campaign where I could get an extra 20 GB for next to nothing, so I was considering that. Read the fine print which basically said "the allowance doesn't apply to tethered use". I didn't care enough to challenge them on this so I passed.

Edit: Just checked the available options, this is still the case. Can't give a direct link for some reason, so here's a screenshot: https://imgur.com/a/rQgoz0m

Basically this is an option for "unlimited internet on the weekends". The originally hidden disclaimer says, among other things, "except for modem mode".