Is just an adapter and makes (mostly) what he should. Sunshine Tronic was very meet. After the first adapter was not working was immediately sent a second, without insisting on returning the defective part. Very customer friendly. The second adapter has dropouts, but mostly he works. Is just a little shaky with the smartphone in the car (Galaxy S III connected to Kenwood sound system). So really stupid here is Samsung. Why this special path? Totally incomprehensible.