Both are European companys with a great privacy drive.
You'd say that most people don't know about Linux phones, but for those who know, Volla running Ubuntu is pretty well known, at least in Europe.
Another crucial point is to push for open standards for those apps that only work on Android or iOS.
The only possible button is agree, but to read what you're agreeing to, you need to click agree first because this overlay also spawns on the privacy policy page that's linked from the cookie wall
The privacy information is also only available in German
10/10 privacy drive