I purchased the composite video cables and keynote app for iphone in hopes to mirror my presentation from my Iphone 4 to a projector. I connected everything to a TV and it wouldn't show up on the TV. Are there additional steps I have to take?
The easiest thing is to mirror to AppleTV wirelessly with AirPlay.
To do it wired, you will need the Apple Digital AV Adaptor. You just run an HDMI cable between the iPhone and the tv.
I don't know about using the composite cable.
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