iPhone 3G S
The little battery icon in the taskbar at the upper right of the iPhone screen is okay at giving a rough indication of battery life remaining. Unfortunately when it comes to details the icon is not so useful.
Luckily there are ways to display the exact percentage of power remaining on your iPhone battery. There are two different methods you can use to achieve this goal depending on your iPhone hardware.
No more calling or driving around to the Apple stores in your area to hunt down an iPhone 3GS. After over a million units of Apple's latest model have already sold, the company has released an online tool so interested buyers can check current inventory themselves.
The latest version of Apple's online inventory tool should be updated hourly, which is an improvement over tools released for earlier iPhone models. The company previously updated in-store inventories of iPhone and iPhone 3G units only once daily.