1. Battery Life

The iPhone 3G offers up to 5 hours of talk time on 3G, 10 hours of talk time on 2G, 5 hours of Internet use on 3G, 6 hours of Internet use on Wi-Fi, 7 hours of video playback or 24 hours of audio playback, and 300 hours of standby time. Enough said.

2. Browser

When we had Internet capability on previous phones, we really didn't use it much. Why? Well, because it was a pain in the butt to use! Apple did an amazing job with Safari for the iPhone which makes surfing the web hassle-free.

Studies have shown that iPhone users are more likely to browse the web on their device, more-so than other phones, simply because it's easy to do. The device is what we like to call "Internet-centric" -- it's centered around the Internet and thus, people actually use it.

3. 3rd Party Applications

If you take the time to go through the applications that are available, you can find some really nice ones that will help increase productivity, and others that will give you a few minutes of fun. Not all are what we'd consider "quality" apps, but there are some great ones out there. For original iPhone owners, these 3rd party applications almost don't make it a necessity to upgrade to the iPhone 3G.

4. Usability

The iPhone has a lot of features that other phones offer, but the ease of use is what stands out with the iPhone. Simple features that most phones have like a clock or calculator, are presented in front of you instead of buried with-in menus. And the clock is more than just a clock, it's a stop-watch and a timer, and has an amazing alarm clock system. This alarm clock system has replaced my stand-alone alarm clock.

The camera is another great example. We've had camera phones in the past but this camera (despite the fact it's 2MP) is easier to use than most cameras on other phones not to mention the fact that sharing those photos with others is great with the nice big touch-screen.

Apple definitely made a phone that their users will want to use, because of the ease-of-use.

5. Overall Experience

The overall experience of the iPhone is amazing. Sure, the new firmware has a few kinks, but the overall experience is what makes the iPhone worth all of the hype and the money. Great battery life, an awesome browser, a selection of quality 3rd party applications, and the ease of use provide the user with an overall experience that is hard to beat.