I knew Brazil was kinda weird with tech import taxes but I didn't know they banned non-certified phones, jezz. Here in Chile they get disconnected from the cell towers after 30 days, but you just need register it^.

Do you know if the Brazilian gov or regulators asked for this first from Google or something?

^: It's less spooky than it sounds, any phone in Chile needs to be compatible with the natural disaster alert system.

Yes, Brazil doesn't allow the commerce of uncertified radio transmitters. It has been like that for close to a century.

If you are asking why the change is happening in Brazil first, the banks cartel met with google and decided to rely on that, for security.