iPhone: Enable or disable call forwarding
Contributed by qmchenry 
June 30, 2007 
Tagged: Apple iPhone
The call forwarding feature on the iPhone is hands down the coolest one I’ve seen on a mobile. With other phones, I’ve setup fake contacts with the dialing code so that I could quickly dial the number to forward or unforward my phone. Forwarding your iPhone is different and definitely cool.
The forwarding setting is in the phone settings screen. To get there, tap the Settings icon from the Home screen, the tap the Phone button. On the Phone settings screen, you’ll see Call Forwarding near the bottom in the Calls section. Tap this button and you’ll see something like this:
The forwarding slider will be in the off position and there will not be a phone number displayed under it in the Forwarding To button.
To engage call forwarding tap or slide the switch to the right of Call Forwarding and the Forwarding To editor screen will slide in, something like this:
Type in the number you want to forward your iPhone to and tap the Call Forwarding button near the upper left corner of the screen. You’ll see something like this:
The slider now shows On and is bright blue. The phone number forwarded to is displayed on the Forwarding To button.
To turn off call forwarding, just tap or slide the Call Forwarding switch into the Off position on this same screen in the future.