Comment by mpol

I use it since 2014, 10 years and counting. I used the first Jolla 1, which was a lovely device, with a very dim screen :) It uses Wayland, Pulseaudio and Qt. I also used it on a Sony Xperia XA2, and since recently am on a Sony Xperia 10 III.

The Android App support is good, I use Whatsapp and Signal with it, also Firefox and DuckDuckGo browser. Just keep in mind that the Android App support is to get a few apps running that are important to you. Choosing Sailfish also means choosing mostly native apps. The system browser is built on the Firefox engine. SSH support is lovely though. It feels just like desktop Linux.

Don't expect a super slick experience. Companies like Apple and Google are pooring billions into their mobile OS. A small comapny like Jolla cannot keep up with that. Also the Android drivers are as is, the Jolla developers cannot improve on them.

Edit: by the way, it uses Firejail to have apps locked into their own jail.