Originally Posted by tsac
The adapter you show is just that an adapter. The Iphone mic impedance requirement is 800 ohms and the blackberry mic impedance is 2.2k. Both require different mic types. I would suggest the adapter is doing its job but the devices are mismatched.
do you know the impedance of the mic your using?
Good information - no idea on the mic impendance. Its just a regular, cheap mic that I use for skype on the PC.