Comment by mytailorisrich

But even the full software stack isn't European as it runs on a Mediatek platform (ie. all the cellular stack and platform software is from Mediatek, which is from Taiwan). It's the apps software stack on top of the Linux kernel that is potentially "European".

There are no longer any cellular chipset vendors based in Europe, afaik, so there's really no alternative. It's also hard to see how they will ever again be one.