there is a youtube app that comes on every iphone (along with a maps app, safari, mail, etc.)
You would have to use the YouTube App for iPhones. You will not be able to upload a video from a mobile browser.
Youtube.
You have to have internet connection
iphone
Go to general and then restrictions and switch off YouTube.
Yes, you can put an iPhone camera in an iPhone 3GS provided you have the required skills.
youtube
Youtube!
Both YouTube and Truveo have dedicated iPhone video applications.
It should automatically be on your iPhone when you first turn it on. It's one of the default apps.
You can add a video on YouTube without going through iTunes on your iPhone by uploading it directly via your PC.