I’ve used a case and screen protector since day one, so zero issues on that front. Cameras look fine, I don’t see any dust. My battery is down to 96% after ~4 months which seems a bit much but then again I also drain and charge almost every day. Worst case I pay $30 or whatever the cost is with AppleCare, but battery life hasn’t changed, it actually got a bit better with 13.2 or 13.3.