I've been in Brazil recently and I was positively surprised with the great consumer protection laws.
One law I really liked was the "right to regret", meaning you can cancel a wide array of contracts within 7 days. For example, when booking a hotel online, no matter the hotel's cancellation policies, you can cancel a reservation within 7 days of making it.
TIL but the California laws are very limited to a subset of items which are already cancellable nationwide. For example, you can always cancel your property insurance and get a prorated refund. OP was talking about hotel reservations which are not cancellable in California. I don't know the situation is in Brazil for cell phone plans but according to the link you posted, it's not cancellable.
One law I really liked was the "right to regret", meaning you can cancel a wide array of contracts within 7 days. For example, when booking a hotel online, no matter the hotel's cancellation policies, you can cancel a reservation within 7 days of making it.