Q: Could I download iChat to iTunes then download it to my iPhone?
A: Unfortunately, no. There are presently no native iChat or other IM applications for the iPhone, and despite the iPhone running “OS X” it does not at this time support “Mac OS X” applications, as the user interface design is completely different.
In the interim, there are several good web-based chat applications available for the iPhone that work through the Safari web browser. A couple of recommended possibilities include Meebo (more information can be found in our Backstage Review) or JiveTalk. A number of other possible chat applications and other web-based apps for the iPhone can be found in our iPhone Software catalog.