How to Change How Long The iPhone 3G Rings
- 1). Dial "*#61#" and tap the "Call" button.
- 2). Watch the screen. The iPhone will display a message with the voice mail forwarding number. Write down the number.
- 3). Dial "*61*" followed by the voicemail forwarding number, then "*11*" and the length of time you want the phone to ring in seconds, followed by "#". For example, if your voicemail forwarding number is +12345678901 and you want the iPhone to ring for 15 seconds, you would type "*61*+12345678901*11*15#"
- 4). Press the "Call" button.
