Voicemail Button

[Futhark]

Is there any way of setting your own voicemail number on the iPhone? I have changed provider and every time I try and dial voicemail via the voicemail button it's trying to dial a different number to the one used by my new network?

 

[vitzr]

Calling your carrier might be a good way to find out.

 

[Futhark]

I know my new carriers number to get voicemail I just can't get a way of changing it on my phone so that it's dialled when the voicemail button is pressed.