Ironically HN is one of the few websites that works well on my phone, because it uses so little of modern web technologies. I use a 7-year old smartphone, it's painful or impossible to read many websites. I have to use old.reddit.com instead of www.reddit.com. Twitter stopped working on my phone a few years ago, good riddance. But my phone is with me everywhere, my laptops are not. So HN is one of the permanent tabs on the phone.