Call forwarding lets you redirect incoming calls to your phone to another number. Most cell phones offer a service or setting to enable call forwarding. Setting up call forwarding may have charges involved, so be sure to check your cell phone provider before entering any changes.

Go to "Settings" on your iPhone.

Select "Phone," then choose "Call Forwarding."

Turn on "Call Forwarding" by tapping "On."

Enter the number you want to forward calls to.

Push the "Home" button to exit from the menu and finish this process.

Turn on your phone and dial "*72."

Enter the number you want to forward calls to.

Push "Send" and wait for text message confirmation.

Push "End" once the message is received.