Fairphone 6 is switching to a new design that's even more sustainable

All phones eventually become obsolete, but their guts could be used in so many ways. I'd love for example if someone made an enclosure acting also as multi port docking station so that old phones with unlocked bootloader (Fairphone being one of them) could be reflashed with a different operating system then used as mini PCs, media players, IoT wall terminals with bigger screens or other uses. Seeing all that perfectly good electronics going into landfills because planned obsolescence says so just irritates me. Can we do that at least for unlocked ones? Framework did something similar for their laptop mainboards, minus the docking station.function as they already have more ports than a phone. Any chances that this could be doable with Fairphone hardware?

It's certainly technically possible. Phone motherboards have limited wired IO, but USB host mode is enough for a lot of things.

The problem is how locked-down most phones are, and how hard it is to modify their software. Even for the Fairphone, you have to fill out a form on their site to get a bootloader unlock code, and they could close that form if they wished (see Asus). That all means starting an "ecosystem" of accessories and new non-phone software is costly and has an uncertain future.

Personally I think the biggest issue is the theft-prevention functionality that means a phone picked out of e-waste is basically bricked (without some exploit). There's companies making new motherboards out of salvaged Intel chipsets, I'm sure it would be possible to build a business around the reuse of phones, but right now there are just too many obstacles.

I think this could be solved with new legislation. At least here, doing anything with e-waste is already highly regulated. Giving registered e-waste processors the ability to unlock the bootloader of any device would reduce waste, and make unlocked phones something you could reliably buy in bulk. Then I think we could see the kind of aftermarket support for phones.