UIDevice-Hardware

UIDevicePlatform

typedef enum {
    UIDeviceIFPGA,
    
    // iPhone

    UIDeviceIPhone1G,
    UIDeviceIPhone3G,
    UIDeviceIPhone3GS,
    UIDeviceIPhone4,
    UIDeviceIPhone4S,
    UIDeviceIPhone5,
    UIDeviceIPhone5C,
    UIDeviceIPhone5S,

    // iPod

    UIDeviceIPod1G,
    UIDeviceIPod2G,
    UIDeviceIPod3G,
    UIDeviceIPod4G,
    UIDeviceIPod5G,

    // iPad

    UIDeviceIPad1G,
    UIDeviceIPad2G,
    UIDeviceIPad3G,
    UIDeviceIPad4G,

    // iPad Air

    UIDeviceIPadAir1G,

    // iPad Mini

    UIDeviceIPadMini1G,
    UIDeviceIPadMini2G,

    // Apple TV

    UIDeviceAppleTV2,
    UIDeviceAppleTV3,        

    // Simulator

    UIDeviceSimulator,
    UIDeviceSimulatoriPhone,
    UIDeviceSimulatoriPad,

    // Unknown

    UIDeviceUnknowniPhone,
    UIDeviceUnknowniPod,
    UIDeviceUnknowniPad,
    UIDeviceUnknownAppleTV,
    UIDeviceUnknown,    
} UIDevicePlatform;

License

Erica Sadun, http://ericasadun.com
iPhone Developer's Cookbook, 6.x Edition
BSD License, Use at your own risk