I don't own an i anything, so I use an 8GB SD card in my F90BT. It works fine, but it seems that the movies need to be converted to the proper resolution or else the pictures get choppy. I would imagine that w/ this stereo being basically a miniature Windows machine that it'd just figure it out, but apparently that's not the case. I've also had an issue where a movie would play fine but wouldn't have the proper coded for sound to play as well. Right now I'm searching around on what is the best way to place movies onto the SD card (folders, leave it on the root, etc) to make things work more efficiently since it doesn't even show names of the movies of anything as I scroll through the list.
I wish there was a single thread to basically give my F90BT all the must current and up-to-date options, but these forums can be a little confusing sometimes. I don't even know the differences of models between an F700BT, F90BT, if the OS' can be upgraded from one stereo and made to work on another, CPU clockers to make it run faster, etc. As cool as this stereo is, it seems very slow to button inputs...my Android phone is faster. So much learning for me to do.