Comment by immibis
Legally, using any tool that allows you to view raw cellphone traffic from your own phone is already unauthorized access (probably).
Famously, in Germany, it's illegal to be carrying a laptop on which nmap is installed. Everyone (who has a laptop and knows how to use nmap) still does it. It's one of those crimes which they get you for if they don't like you but you didn't commit any actual crime.