Well basically whats happening is that with the iphone 4S you cant access your voice mail with the voice mail 1touch button mabe minor to some but not others, The same problem was reported with the iphone 4 hence a short code was release to fix that issue *5005*86*+447836121121. But note this code wont work for the 4s, So getting the 4s this Christmas this is one of the problem to expect.
well still nothing out for this?