The Web browser has been kind of annoying on the iPhone, because it won't remember what you write in forms, like Safari or IE do on computers.
Watch this: Turn on iPhone 3GS autofill
Here's how to turn on autofill in the new iPhone firmware.
Go to Settings, then choose Safari, and then choose AutoFill.
You can choose whether to use info from your contact list or previous names and passwords you've entered. This can really speed up filling out forms in the browser.
