* Up to five times faster access and use, thanks to automatic pre-fetching of messages
* Drastically reduced clicks and scrolling to access email
* Fewer keystrokes for reading, composing, or searching mail
* Attachments, including files and photos, viewable and automatically resized to fit the user's phone
You should check the requirements, the most important being J2ME (Java) MIDP2. Gmail Mobile is also available from your browser if you go to gmail.com (or m.gmail.com) on your mobile phone, but you won't get these features.