Return to Step 1 - Pick device type

Step 1 - I have an iPhone

Return to Step 2 - Pick TV type

Step 2 - I have a HD TV

Return to Step 3 - Pick video input

Step 3 - I want to use the VGA input. 

Step 4 - Configure this solution.

Connect the Apple VGA Adapter to your iPhone and to your HD TV's VGA input using a VGA cable.

To pass audio to the TV you will also need to connect a 3.5mm audio cable from the iPhone to the TV's audio in.

You will need to start an app that supports video out like YouTube, Photos and iTunes to name a few. When you begin to play a video or start a slideshow in the Photos app you will see the output on the TV.
Many apps like the Netflix app will play through the Apple VGA Adapter and VGA cable out to your HD TV.