They should switch to an SOC with mainline Linux support so you don't have to throw it out in three years.
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Many mainline supported SOCs are unavailable to a company like Fairphone, which only produces a tiny amount of phones (less than 50k for the latest and greatest model). CPU manufacturers aren't going to waste time sending their top-end chips to some small company when Samsung can pay more per CPU and can take shipping containers full of them. That's also why F(x)tec phones come out with such outdated processors. Small companies will have to make do with whatever niche products are for sale in low quantities.