If you're interested in a smartphone that goes out of its way to buck planned obsolesence you should peep FairPhone. Their mission statement is maximum repairability as well as ethical and sustainable production.

They're dedicated to total transparency of their production and supply chains, and seem to be meeting their company ethos pretty well between ethically sourcing their minerals and paying their workers fair wages, all good shit.

I don't have one yet but I'm planning on copping one when this android finally craps out.