The general rule is "Don't bring anything to Brazil that you can't afford (financially or emotionally) to lose." That, in my humble lifestyle, includes electronics that cost over 100% more in Brazil. Minimize the things that attract the attention of others. Whatever happened to books on paper? Don't get ruined by sand or salt water either. There are internet cafes and hotel computers for other communication. And you're on vacation after all, no need to be in contact every minute. :-)