So my wife does not know it yet but she recently upgraded her Blackberry Curve to a 4s (Even Android fanboys have to admit that is a good move! ). She has a nice Macbook 13" laptop that she uses, but we only use one Apple Account with the App Store on both my iMac and her Macbook. Does that impact her activating an iPhone at all? We she need her own Apple Account for it? Does this impact how iMessages works? Thanks!