Quixey - Search for an app by what you want to do
Time Magazine - 50 Best iPhone Apps of 2011
iPhone Home screens of Top Techies
First, head to your iPhone's settings app. Scroll down to "General," then click on "usage." You'll see your minute breakdown, but at the very bottom you'll see your data usage (sending and receiving) over AT&T's cellular network. If you've never reset your stats, you'll find that this number will be fairly high. (source: geeksugar)
You can also call *DATA# and AT&T will send you a text message with your data usage this billing cycle.
Steve Jobs presented the new folder feature as easy as dropping one app on top of another to create a new folder. Yes, that’s easy to do, but if you have several hundred apps on your iPhone, that process is a lot more tedious than most will like. Read more here
To restart iPhone, first turn iPhone off by pressing and holding the Sleep/Wake button until a red slider appears. Slide your finger across the slider and iPhone will turn off after a few moments. Next, turn iPhone on by pressing and holding the Sleep/Wake button until the Apple logo appears.