FYI, the international SMS commands don't come through as hidden, I've tried that with my wife's phone while being overseas (Canada - Thailand) and the command message showed up in her messaging app. Not sure if it can be fixed and if the same issue exists across all the boarders but be aware, if your phone got stolen while you're on vacation, it's best to use the web commands, which don't have all the options as the SMS commands unfortunately - I tried DATA ON command through SMS.
