and I need a toddler to teach me. I just purchased the Thunderbolt 4G which my son says doesn't make sense because we don't have 4G yet. Whatever kid. Teenagers... I want an app that I can locate another phone. Example - tow boat chief on the Mississippi, and Ohio rivers - can I find where his boat is with a fancy schmancy app? Can one of the apps I have pre-loaded do it? I can't find anything... Thanks for your help.