Change the voice mail number
Hello
When ever I tap the voice mail icon, it shows the calling then it just ends the call, but if I dial the number it works,
So here is the thing, I'm with giffgaff who use O2 as their carrier, so it looks it looks like it's dialing 901 but I want it to dial 443, how do I change the number behind the icon?
I thing this should be a user configurable option, as more and more virtual phone providers appear, is it possible ?
iPhone 4S, iOS 7.0.4