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.

It's pitch black, below 5c, snowy and windy. I'd much rather fondle my testicles when walking the dog, instead of holding my phone out. Head lamp is the way forward.