After a small amount of screwing around the H500 connected with myNokia N75 without a hitch. I find that if you firmly place the earloop around the base of the ear and then fold in the receiver in fitsfirmly and doesn't come loose. I agree that the volume could go higher;however, in a quiet room it is adequate. I'm told that I'm clearlyheard on the other end of the connection. This is also in a quiet room.Small and lite. I think this a rather nifty piece of gear.