That still exists? When I first heard of it many many years ago I had hopes for it. Never heard of it again. I see it is still on Qt5.
Qt 5.6 that too. Probably so that they can keep most of their user space closed source.
My understanding is that it met some government requirements that Android did not. Niche for sure but useful in some contexts.
Yes, they've even come out with a phone, but it's only available in Europe[0]
[0] https://commerce.jolla.com/products/jolla-community-phone