Custom Voicemail No on Official Carrier
Right not really a major hack as such, but i cannot seem to set my voicemail no from the button from my carrier's one to a 3rd party provider.
I have tried *5005*86*customno# which i know did work a time ago on my hackitaved and software unlocked phone.
However i have now officially unlocked said device and have carrier ipcc settings loaded automatically via itunes.
My phone is 3.1.2 and FWIW it is jailbroken but just to be clear it is unlocked via Apple not the Devteam's great stuff.
Is there any easyish way to do this, it can't be that frowned upon by Apple can it??