4 years isn't that old for a phone though, not anymore at least. I put one smartphone away after 3 years because a chip on the motherboard broke, but feel like

4 years isn't that old for a phone though, not anymore at least. I put one smartphone away after 3 years because a chip on the motherboard broke, but feel like that's the exception (never heard of this failure mode from anyone else) and most phones should last 4+ years if you don't get unlucky with the battery (I can't identify why some batteries are good as new after 6 years whereas others can barely hold a charge after 2 — but anyway, those are replaceable)