On 'Disabling Voicemail' on the iPhone

[techpr]

If Steve Jobs says the iPhone comes with Visual Voicemail, the iPhone really comes with Visual Voicemail. However, if I had investigated a bit more, I would have known that even though the iPhone GUI doesn't let you disable voicemail, you can do this using industry standard GSM codes.

More... (http://digg.com/apple/On_Disabling_Voicemail_on_the_iPhone)