A lot of paid Wi-Fi hotspots allow DNS traffic through unmolested, that's a similar loophole

Maybe one could use something like this https://github.com/yarrick/iodine

I'm pretty sure there was something, within the last year or so, on HN front page which used [exploit/protocol/hack] to browse wikipedia over [SMS/tweet/etc.], or similar

> Guthabenaufladung mind. 5 € alle 6 Monate zur Verlängerung des Aktivitätszeitfensters.

So it costs at least 83 cents per month. Still might be worth it compared to the insane mobile data charges here if you can get a usable bandwidth. I suspect in practice they will just ban you if you abuse it like that.