So I would also agree with Cooper1979 to also contact Apple direct if you have issues with your phone. It will need to be assessed by a authorised service provider here in NZ but it is Apple who will authorise work in some cases like my own situation and also help to speed up the process. Also if you have a case number with Apple it will help to record some of the things also tried in diagnosing the phone, helping to speed up resolution time - helpful when you want to get your $1000+ device back ASAP! ;) :)