I’ve never had the hinge to wear out on a flip phone and that is what I have carried since the first one…that big ole Motorola Flip*. I just had to give up the one I have really loved, Samsung Gusto. It was a 3g unit and I had to get a 4g because of the networks shutting down 3g. I did find another flip phone that is 4g and I’m quite happy with.
*https://i.pinimg.com/736x/42/01/90/420190629cbebda7a77071edeafd2b5a—motorola-microtac-flip-phones.jpg?b=t