Mobile uk had a good deal on a iPhone 6 but gave me bad advise about how to port my number they advised to buy a 02 pay as you go sim then register it costing me £10.00 then wait 24 hours to get a pak code I did this got a pack from my old provider orange only to be told that we and orange could of done this free of charge .cost me over £11.00 talking to 02 customer services in phone bills to get a pak code not very happy with the advise but got a good deal in the end better than what really or orange could offer ,not easy to get through on phone as have to wait to long room for improvement