I've just received a sim for my sim-only pay monthly contract, I purchased it so that I can divert business calls from an iPhone5 to an iphone6 on vodafone.
The sim appears to be working properly but when I try to key in the vodafone phone number in "call forwarding" it just rejects it. I've already tried to do this with a vodafone payg sim but they don't support call forwarding, I searched the virgin website but couldn't find anything saying that you don't do call forwarding. I know it's definitely the sim not the phone as my giffgaff sim works fine. Just wondering if anyone can help, just want to get this working!