I can't speak for all HNers but I recently bought a 128gb iPhone SE from someone on Gumtree after having used Android phones for 5 years (I'm an Android developer). I could not find any modern 4" phones. I really like being able to comfortably read the entire screen with one thumb, and the form of the phone just feels comfortable and functional. It's also one of the last modern iPhones with a headphone jack.
I do still prefer Android as an OS, though I am still getting used to iOS's quirks. I'm very happy with my purchase, though.
I have had one of the above for about a year. Battery life is not too great, but for my needs (occasional phone call, text, google maps) it works fine. Fits in the front coin pocket of my jeans.
I do still prefer Android as an OS, though I am still getting used to iOS's quirks. I'm very happy with my purchase, though.