All About Iphone

Besides taking you back to the home page, the iPhone's home button (circled with red above) has lots of little features. With the iPhone 3.0 update, it got even more of them.
iPhone Home Button Trick 1:

Press the home button from the first page to go to Spotlight search. Press it again from Spotlight search to go back to the first page.

iPhone Home Button Trick 2:

Press the home button to go back to the first page from any other page on your iPhone. It's much easier than swiping back 8 times.
iPhone Home Button Trick 3:

Use the home button to wake your iPhone. If the iPhone is locked and the screen is black, you don't have to exclusively press the Sleep/Wake button on the top right of the phone. The home button does the same exact thing.

iPhone Home Button Trick 4:

Double click the home button to access:

* Home
* Search
* Phone Favorites
* Camera
* iPod

How to change settings for the double click home button feature:

1. Go to Settings
2. Go to General
3. Go to Home
4. Select what you want

iPhone Home Button Trick 5:

If you already have music/video playing on the iPod, double clicking the home button will take you to the iPod controls no matter what you have selected in Settings.
iPhone Home Button Trick 6:

If the phone is locked, and you have music/video playing on the iPod, double clicking the home button will allow you to control your iPod without unlocking your iPhone.
As you can tell, there's hidden functionality in every little aspect of your iPhone. Go here to learn how to use 40 awesome iPhone 3.0 features you probably weren't even aware of. As an iPhone user, it's almost your responsibility to learn and master every aspect of the iPhone (considering how much you pay for the damn thing.) So check back often, because we are all about giving iPhone tips, tricks, and hacks to optimize your mobile experience.