A few more thoughts from me based on above
I have an old 4 which still works reasonably well, it is the model that had wifi issues (bad chips) and mine is currently not working but my point is that its still going and runs ok iOS software
I have a 6 and big screen with large text size is great for my old eyes so I can use it without my reading glasses. 99% of my use is messaging and web access,mI’d get the plus size next time. Its been robust enough, my prior phones I did not use a case but I do with the 6 as its too thin otherwise
@wk I’d agree the SE is a very nice phone from specs but £160 vs £350 I’d go with the 5S too