My wife has an iPhone SE, because she wanted a smaller phone, and these are pretty cheap. I have an iPod touch, and while I got an immense amount of use from it, after winning it in a drawing, I learned quickly to hate the Apple software and app dictatorship. I downloaded a Wi-Fi finder app soon after I got the iPod. It worked great, and I needed it, because as a truck driver, I needed to be able to get online with it. Then, one week, it was suddenly gone. No notice. It just wasn’t on the iPod screen any more. Come to find out the developers had a falling out with Apple, and Apple jerked their app off the store.
Whatever purpose you may use an iPhone for, keep in mind that Apple can force any app or software feature off the device any time they decide they don’t like it, and they owe you no explanation. How would you like waking up one morning and finding out that your hearing aid connectivity no longer worked?