The iPhone is an Internet-enabled multimedia mobile phone designed and marketed by Apple. It has a multi-touch screen with virtual keyboard and buttons. The iPhone's functions include those of a camera phone, portable media player (iPod), in addition to text messaging and visual voicemail. It also offers Internet services including e-mail, web browsing, and local Wi-Fi connectivity. It is a quad-band mobile phone that uses the GSM standard, and hence has international capability. It supports the EDGE data technology.
In July 2008 Apple released the iPhone 3G. Being similar to the original iPhone in size and features, the iPhone 3G also includes fast 3G wireless technology, Maps with GPS, support for enterprise features like Microsoft Exchange and the new App Store.
The reset technique is the same for both the iPhone and iPhone 3G and is relatively simple to perform.
Now that you have this information, just select your unit from the Apple iPhone list, and follow the reset instructions exactly.