ios 通过设备号获取IPhone的机型
case "iPhone3,1", "iPhone3,2", "iPhone3,3": return "iPhone 4"
case "iPhone4,1": return "iPhone 4s"
case "iPhone5,1": return "iPhone 5"
case "iPhone5,2": return "iPhone 5"
case "iPhone5,3": return "iPhone 5c"
case "iPhone5,4": return "iPhone 5c"
case "iPhone6,1": return "iPhone 5s"
case "iPhone6,2": return "iPhone 5s"
case "iPhone7,2": return "iPhone 6"
case "iPhone7,1": return "iPhone 6 Plus"
case "iPhone8,1": return "iPhone 6s"
case "iPhone8,2": return "iPhone 6s Plus"
case "iPhone8,4": return "iPhone SE"
case "iPhone9,1": return "iPhone 7"
case "iPhone9,2": return "iPhone 7 Plus"
case "iPhone9,3": return "iPhone 7"
case "iPhone9,4": return "iPhone 7 Plus"
case "iPhone10,1","iPhone10,4": return "iPhone 8"
case "iPhone10,2","iPhone10,5": return "iPhone 8 Plus"
case "iPhone10,3","iPhone10,6": return "iPhone X"
case "iPhone11,8": return "iPhone XR"
case "iPhone11,2": return "iPhone XS"
case "iPhone11,4","iPhone11,6": return "iPhone XS Max"
case "iPhone12,1": return "iPhone 11"
case "iPhone12,3": return "iPhone 11 Pro"
case "iPhone12,5": return "iPhone iPhone 11 Pro Max"