This has nothing to do with Logitech. I have tried other products in the past year and a half. My iphone has been giving me this error since iOS 5. Something in the software is preventing us to use these aftermarket equipment. My sister in laws iphone 4 has the iOS 6 and she has a JVC stereo in her home and has no problems or errors on her iphone 4.
My terminals are clean. I have given my iphone a factory reset and a restore. My iphone shouldn't be limited to uses of other products. In the near future I am planning on getting a new cellphone. I don't want to switch from apple.
Apple's next update for iPhone should fix this for us. So, we can use our docking stations.