Ok guys since i started the question here is what i did. I have unlocked iPhone from at&t i owned it and if u are not fully paid with your phone you wont be able to unlock it. You can request unlock via online. If you are on difff carrier google it how to unlock. I am in Rio right now, i went to Rio Sul Mall R15 by taxi at most. mall have lots of carriers to choose from. I chose Vivo since they have less customers to wait than claro or Oi. I asked for prepago sim card, it costs R10, then asked for plan that includes internet, the lowest is 250MB for R25. Total is R35, not bad am not planning to surf, only to use the google translate so it would be easy to interact with garotos. Turn off your phone before u insert sim card then power back on. When u r in the mall dont connect to their wifi use your vivo to test google translate, this is downloadabel app. When you use it, You dont even have to type if u wish, you can click on microphone and start saying the phrase and it will translate for u, not on a noisy environment. Ok i will get ready to checkout heading to SP Lagoa! TTYL