I purchased these to use with my Blackberry Storm. They pair easily enough, but the music cuts out constantly. Sometimes I'll get through about 3/4 of a song or so uninterrupted, but most of the time, it will cut out after a few seconds, pause for about 10 seconds, give me a few more seconds, etc. This happens regardless of whether the storm is in its holster or sitting in the open a few feet away. I didn't try using it for calls, as the music was hopeless. After a few days of trying various settings, etc., I gave up and returned it.