The Fairphone (Gen. 6) with postmarketOS — Catcrafts

The Fairphone (Gen. 6), reflashed by Catcrafts to run postmarketOS with the patches and IMS/VoLTE implementation Catcrafts maintains. All of that software is open source. You can download it and flash a Fairphone yourself, and you are welcome to. What you pay for here is the thing open source doesn't come with: real support.