It would give you access to the host file Before anything connects to the internet, it checks the host file to see if the address is already located there. (Why download it again if it’s already stored locally?) So one can use the host file to list all the ad networks you done like and POOF all those ads are gone (unless you’re actually hosting them from your phone, but you’re not so it will return null)

The problem is, the host file is a system file you can’t access without root access. Try it on your home pc 🖥 https://winhelp2002.mvps.org/hosts.htm