Bike computers pre-date smart devices, but if I get in a crash I’d rather have my phone in my pocket than attached to my bike and possibly destroyed.
A bike computer is also smaller, lighter, uses way less power, is cheaper, and you don’t really have to manage it like you do a phone (i.e. take your phone out, start up the app, mount it, make sure you don’t run out of battery or you can’t navigate or communicate).
Bike computers pre-date smart devices, but if I get in a crash I’d rather have my phone in my pocket than attached to my bike and possibly destroyed.
A bike computer is also smaller, lighter, uses way less power, is cheaper, and you don’t really have to manage it like you do a phone (i.e. take your phone out, start up the app, mount it, make sure you don’t run out of battery or you can’t navigate or communicate).