If You have not less than some command of Portuguese, it is usually far better (and more cost-effective) to go to an Formal store of among the cell phone operators and take a look at to acquire a SIM there. Havaianas flip-flops are inexpensive and available in Brazil and supermarkets https://top-fully.com/profile.php?op=userinfo&name=Your_Account&do=profile&mod=space&username=ofelia_biermann_451692