Trying to set up my phone after updating it. Got as far as update Apple ID. When I put in my email it says that the ID is already being used? Have tried changing the password online and it all works fine there, but I can't input the details in my phone. Someone please tell me I'm just being really dumb and I'm missing something out really simple?? eta: It goes through on the first part. I put in my DOB and it's the page after that.