My unit had a whole mess of issues with the pioneer branded cable, my guess is very bad build standards and and poor quality. Build as cheap as possible, to make as much money as possible.
You wont find that with the apple cable, and you even get a wall charger for use in the house, can always use an extra one of those, especially if you have an iphone.
the other issues I had as well was the ipod wouldnt charge as well. Also some issues with control as well, here I thought the unit was buggy when in fact it was the poor quality pioneer cable.
Some work fine im sure, but this is a great example of quality control or lack there of. Worth you can do is try it out, if it works great, if not then just return it, nothing lost, but all to gain.