I have an iPhone 5S which I inherited from my mother when she upgraded to a 6, which is...fine. It lets me more easily text my work colleagues, call my grandmother once a week, and browse PC/Discord/play Happy Colour when I'm supposed to be working. But the battery doesn't last very long so I may upgrade it to a slightly newer model - probably an iPhone 6 unless the 7 is cheap enough - in May of next year when my contract runs out.
I remember a few years ago when I inherited my mom's iPhone 6 Plus, and it was much faster than my Moto G3. Despite the fact it only had 2 GB of RAM, it ran things like Pokémon Go very smoothly and was definitely built to last. Only problem was its battery dying, and Apple support breaking other components after I paid for the battery replacement. :<