OK the good stuff first: it works flawlessly with my SGH-T809 phone. When I dial out I always get a short static/crackle noise but it disappears as soon as I hear ringing on the other end. Not sure if that's how it secures a connection or whatever, but it's not a big deal. Sounds great, haven't had one complaint yet and it's been plenty loud enough so far. It's also great looking. It's very small, and very light.