Arbitrary changes? But then how can we ensure that you are charged the proper price for tethering bandwidth versus phone bandwidth? How can we ensure you are pa

Arbitrary changes? But then how can we ensure that you are charged the proper price for tethering bandwidth versus phone bandwidth? How can we ensure you are paying the right price to blacklist phone numbers? My goodness what if you remove the default apps from the phone? No, that won't do at all.