Apple's next-generation iPhone, version 4, was officially announced last night at WWDC, and the whole world was in awe when taking a look at the... all-too familiar design. I mean, pretty much everyone knew just what the handset looked like thanks to some indiscretions (coming from Gizmodo and a Vietnamese website called Tinhe), so this wasn't exactly much of a surprise.

But leaving this thing aside, we were able to find a whole lot more about the iPhone 4, including a couple of technical details that make it a very compelling device to have and wait for. And for this reason, we've just compiled a list of reasons why you should start saving up in order to get this thing.

Reason 1 – FaceTime video calling feature

This is one of the coolest features to be available in the fresh iPhone. Sure, it only works on a Wi-Fi network, but that's a small price to pay for such a useful thing that will let one enjoy live conversations with their loved ones (as long as they also have an iPhone 4).

Reason 2 – Retina display

The iPhone 4 sports the most advanced display any handheld Apple product has ever come equipped with. So, the 3.5-inch Retina display has 960 x 640 pixel resolutions (namely 326 pixels per inch), which makes it absolutely a beauty to look at. In other words, you won't even be able to distinguish the pixels on the screen, and all you'll be provided with will be a smooth, clear, high-definition image.

Reason 3 – Improved design

Let's face it, the iPhone 4 looks much better than its predecessor. Sure, there are less curvy surfaces and there's plenty of glass, but the look is very modern and cool. Oh, and there's also a white version, for all those Mac users out there who wanted to accessorize their computing system with an Apple handeld of the same color.

Reason 4- Improved camera, LED flash and photo shooting options

This might convince quite a few users to go for the iPhone 4. Practically, the handset now sports a much more serious sensor (5 megapixels), which is also backlit, meaning that the overall quality of the photos taken in low-light conditions will most likely increase. Plus, the presence of an LED flash (which doubles as an LED video light), tap to focus and 5x zoom will also make the iPhone 4 quite popular for taking good-quality photos.

Reason 5 – HD video recording and editing

This is a major update, and one many people have been waiting for. So, with the fresh iPhone, one will be able to easily record videos, edit them (via the iMovie app for iPhone) and then upload them onto the Internet. In other words, they'll have a full-fledged multimedia studio right in their own pocket, without having to cough up extra cash for this.

Reason 6 – Longer battery life

During his keynote speech at WWDC, Steve Jobs promised significantly improved battery life for the iPhone 4, which is certainly a plus. I mean, we're talking about seven hours of talk time on 3G networks, up to 10 hours of web browsing on Wi-Fi, and up to six hours on 3G, up to 10 hours of video playback and up to 40 hours of audio playback. Pretty impressive stats, don't you think?

Reason 7 – Enhanced gaming capabilities

The iPhone 4 sports Apple's own A4 chip that makes it a lot more powerful than the 3GS (let's not forget, the same CPU powers the company's iPad tablet). Moreover, besides the built-in accelerometer, which we'd already grown accustomed to from the previous models, the new handset also packs a gyroscope that will enable 6-axis motion sensing such as up and down, side to side, forward and backward and pitch and roll, making it a lot more suitable for gaming purposes.

Reason 8 – Integrated with the iBooks app   The iPhone 4 will offer access to a feature that's already present in the Kindle, for example. Practically, users will be able to start reading a book on their iPhone 4 and them continue to do so on their iPad or iPod touch, for example.
Reason 9 – It runs the iOS 4

One of the most important advantages brought about by the fresh iPhone is its capability to run the iPhone OS 4 (rebadged as iOS 4), which should bring about a whole new set of cool features, including multi-tasking, folders, etc. The operating system will certainly be a huge step forward for Apple, while the handset will enable users to enjoy this experience at its best (iOS 4 will probably be available on the 3GS as well, but it won't run as fast).

Reason 10 – Fanboyism

The last reason (but for some people, the most important) is sheer fanboyism. I mean, there are some people out there who'd buy anything that Apple comes up with simply because it's an Apple product and they love the company and its philosophy. And these people will certainly go for the iPhone 4 as well, especially taking into consideration the other reasons listed above.

These are just a few reasons why one should buy Apple's new iPhone 4, but if you've gotten more, please don't hesitate to share them with us via this article's comments section.