Like many complex devices, there needs to be easy ways to diagnose issues and get info about the device itself, sometimes used for engineer testing purposes, if nothing else. These codes can assist with various testing and troubleshooting needs.
There are a lot of codes available: *3001#123456#* and pressing “Call” starts a field test on your [...]


Details of the new iPhone 4.
First iPad jailbreak has officially been released.
Could we see a Verizon iPhone 4G this summer?
The latest iPhone 4.0 beta 2 firmware is available for developers to download.
iPhone 4.0 release date is in June 2010.
The iPhone 4.0 beta 1 firmware can be "jailbroken".
Could this be the Verizon iPhone 4G?