All devices in one big enum

UIDeviceHelpers.swift

import Foundation

public extension UIDevice {
    
    public enum Model {
        case iPodTouch5, iPodTouch6, iPhone4, iPhone4s, iPhone5, iPhone5c, iPhone5s, iPhone6, iPhone6Plus, iPhone6s, iPhone6sPlus, iPhoneSE, iPad2, iPad3, iPad4, iPadAir, iPadAir2, iPadMini, iPadMini2, iPadMini3, iPadMini4, iPadPro, AppleTV, Simulator, None
    }
    
    static var model: Model {
        var systemInfo = utsname()
        uname(&systemInfo)
        let machineMirror = Mirror(reflecting: systemInfo.machine)
        let identifier = machineMirror.children.reduce("") { identifier, element in
            guard let value = element.value as? Int8 where value != 0 else { return identifier }
            return identifier + String(UnicodeScalar(UInt8(value)))
        }
        
        switch identifier {
        case "iPod5,1":                                 return .iPodTouch5
        case "iPod7,1":                                 return .iPodTouch6
        case "iPhone3,1", "iPhone3,2", "iPhone3,3":     return .iPhone4
        case "iPhone4,1":                               return .iPhone4s
        case "iPhone5,1", "iPhone5,2":                  return .iPhone5
        case "iPhone5,3", "iPhone5,4":                  return .iPhone5c
        case "iPhone6,1", "iPhone6,2":                  return .iPhone5s
        case "iPhone7,2":                               return .iPhone6
        case "iPhone7,1":                               return .iPhone6Plus
        case "iPhone8,1":                               return .iPhone6s
        case "iPhone8,2":                               return .iPhone6sPlus
        case "iPhone8,4":                               return .iPhoneSE
        case "iPad2,1", "iPad2,2", "iPad2,3", "iPad2,4":return .iPad2
        case "iPad3,1", "iPad3,2", "iPad3,3":           return .iPad3
        case "iPad3,4", "iPad3,5", "iPad3,6":           return .iPad4
        case "iPad4,1", "iPad4,2", "iPad4,3":           return .iPadAir
        case "iPad5,3", "iPad5,4":                      return .iPadAir2
        case "iPad2,5", "iPad2,6", "iPad2,7":           return .iPadMini
        case "iPad4,4", "iPad4,5", "iPad4,6":           return .iPadMini2
        case "iPad4,7", "iPad4,8", "iPad4,9":           return .iPadMini3
        case "iPad5,1", "iPad5,2":                      return .iPadMini4
        case "iPad6,3", "iPad6,4", "iPad6,7", "iPad6,8":return .iPadPro
        case "AppleTV5,3":                              return .AppleTV
        case "i386", "x86_64":                          return .Simulator
        default:                                        return .None
        }
    }
    
}