I have owned an iPhone for about a month now and I’m very happy with it. Its mail application is acceptable, but it’s not very Gmail-esque. It does not have the conversation view, archiving e-mail means having to move it to “All mail”, which is a bit annoying. Ergo, it works, but it’s not perfect. The Gmail web application on the iPhone is very good, it works just like the desktop Gmail web client and it’s fairly responsive for a web app, it’s only missing one thing: the ability to check for new mails every x minutes.