Announced a short time ago, the Callback 8020 is seen as a means of combating the addictive lure of the modern-day smartphone. While it supports Android apps via its SailfishOS, it disables features like web browsing and social media by default.
However, despite the noble quest for a ‘digital detox’, the phone met with a somewhat frosty reception online (no pun intended), with many comparing it to an elderly relative’s flip phone. In our poll, 70 percent of you said you wouldn’t be buying one.
The alternative would be a mid-range phone with SailfishOS on it. I have one, a Sony Xperia III which I chosed for the small size. I like it. BTW I had nearly every Linux phone by Nokia and Jolla since the N900.
But if you still want something that is more like a pocket computer and less like a distracting phone, you could look for handheld PCs / ultraportables, and put Linux on one. These can run Threema Web, and Waydroid if you still want apps. (I have a Gemini PDA, and I like it, but be careful - this is NOT a phone - but fine for answering mail).