* DBanker - Best to just try adding a small video file on the SD card. Try converting a small video file into different formats (.AVI, .MP4, etc.) and see if it'll work on your GPS device. WinAVI Video Converter is a good software for conversions, and it's free. Just don't forget to make a backup copy of your original SD card. And If the file won't fit on the SD card (because of capacity), try another SD card.

It'll most probably work ... if you use the right video format.

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* jbserbael - You're welcome. But keep your ears open ... Some people may have a different opinion on the iPhone's GPS.