By Shea Belsky

The newest invention by Apple, the iPhone 4, has taken the world by storm, as the iPhone is the world’s best selling smart phone. Millions of pre-orders have been placed on the phone, and millions have already been sold. There are many Apple stores where lines are out the door and where people have set up camps to wait for the iPhone 4.

But the real question is: what’s so great about the iPhone 4?

It has 2 cameras, one in back and one in the front, for video calling. The iPhone 4 has a crystal clear display, 10 times better than the iPhone 3GS display. It has a redesigned shell and exterior, multitasking, the ability to set a wallpaper for the main screen (called the Springboard) which was originally only available by hacking the phone, the ability to use a password instead of the regular 4-digit passcode, a unified mailbox for all email accounts set into the iPhone, improved Bluetooth and wireless capabilities, redesigned game play experiences, a faster internal hard drive, redesigned internal apps, the ability to make “app folders,” or groups of apps (a folder is already made for you the first time you use the iPhone 4 software), a built-in GPS system, a digital compass, up to 7 hours of talk time on 3G calling, 14 hours with 2G, up to 300 hours of battery, 6 hours of 3G internet, 10 hours of Wi-Fi internet, 10 hours of video playback, 40 hours of audio playback, and over 100 other GUIs, or General User Interfaces.

You may be asking “You can fit that much stuff into an phone?!”

With an iPhone, anything is possible.