on 17-07-2008 13:13
on 17-07-2008 13:21
They should show on-screen as "Blocked" rather than withheld... if it's not ringing at all though then I'd check with Customer Services and ensure that there's no form of Anonymous Call Rejection on your account.
on 17-07-2008 13:33
on 17-07-2008 14:04
on 17-07-2008 14:17
Try again and ask O2 to own their own problem. How could it be an Apple problem !
This is not a network problem, there is no phsical way that O2 are able to put a block on your number for anonymous calls. It is simply not possible.
I suspect a faulty sim or device.