Phone flashlights are optimized for photos. They don't shine very bright for example. You need to see even a good 30€ flashlight. Super bright compared to that. Also if you are in a situation that means you need to have battery on your phone, using the flashlight drains it a lot. Also on some flashlights you can use as a powerbank. For someone living in a city, it's maybe not it but if you are even a bit remote or like to do hiking or something its super useful. Idk I probably have read too much r/flashlights. It's like collecting knives man.