Thanks for this info my iphone is actually jailbroke and using a app called tvout i can specify which apps have access to the tv out functionality so theoretically i should be able to do what i want just wanted to confirm that it is the tv out functionality it uses and not some other output format. Guess the only way to find out for sure is to order my self an imiv and give it a try if all else fails i can just get a iphone holder and use that for the sat nav and still benefit from all the other features of the imiv.
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