Love my iPhone 5s but it was brutal after IOS 11 upgrade. I couldn’t even swipe to answer the phone. If your a fan-boy you can probably do this yourself, but I took it into the Apple Store and they restored it back to base 11.0.3 using the iTunes app on a Mac wiping everything. And bingo, we’re back in business. Every couple of years going back to metal on my laptop has been a good thing too.