BLUETOOTH....not working

yes, i did a search and didnt find anything. i bought a i-phone in the states, brought it back here to brazil where i live and work. got it unlocked. have been trying to use bluetooth to transfer from a friends phone several videos. not just from his but from several different ones. regular cell phones not i-phones. but with bluetooth. their phone recognizes "i-phone" but then stops connection cause i guess mine doesnt see theirs. mine just keeps saying "searching". ive got the 3g just before the release of the new one. im new here so go easy.........