Hello, last week I bought new iPhone 3G device and now something wrong happen in this portable device. When I try to use a third party AV Cable with the iphone 3G devices then not any video will play on this. This AV cable contains headphone jack. Three other parts of the cable will be connect to the TV this three parts are red, yellow, and white. This connection provides audio, but no picture appears on the screen. Any advice to solve this trouble would be thanks.
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