Most smartphones have a life of a couple of years before they start to feel long in the tooth. But in these days of environmental awareness, many feel that it's wasteful to junk a handset in favour of a completely new one when we could, in theory, take a more sustainable approach.
That's the ethos behind Fairphone, which has been selling modular, self-repairable phones for years now. You may not get the latest and greatest technology, but you do get a phone that's much more sustainable than anything else on the market. And now, Fairphone 4 supports 5G.
Fairphone 4 5G review at ZDNet