我已经创建了一个扩展，让你有3个级别的识别:

设备类型 按英寸划分iPhone/iPad的类型 设备型号

它会随着最新的iOS设备进行更新

UIDeviceDetector

你可以像这样使用UIDevice类:

NSString *deviceType = [UIDevice currentDevice].model;

if([deviceType isEqualToString:@"iPhone"])
    // it's an iPhone

你可以在GitHub上查看GBDeviceInfo，也可以通过CocoaPods获得。它提供了简单的API来检测各种属性，支持所有最新的设备:

设备的家庭

[GBDeviceInfo deviceDetails]。family == GBDeviceFamilyiPhone;

设备模型

[GBDeviceInfo deviceDetails]。model == GBDeviceModeliPhone6。

欲了解更多，请参阅Readme。

为了简单的比较，我总是喜欢宏观:

#define IS_IPOD [[UIDevice currentDevice].model containsString:@"iPod"]
#define IS_IPAD (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
#define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)

它简单易用。

请随意使用这个类(gist @ github)

代码已删除并重新定位到 https://gist.github.com/1323251

更新(01/14/11)

显然，这段代码现在有点过时了，但它肯定可以使用Brian Robbins提供的这个线程上的代码进行更新，其中包括更新模型的类似代码。谢谢你在这个帖子上的支持。

更新平台字符串。

// Created from this thread: https://gist.github.com/Jaybles/1323251

// Apple TV
if ([platform isEqualToString:@"AppleTV2,1"])   return @"Apple TV 2G";
if ([platform isEqualToString:@"AppleTV3,1"])   return @"Apple TV 3G";
if ([platform isEqualToString:@"AppleTV3,2"])   return @"Apple TV 3G";
if ([platform isEqualToString:@"AppleTV5,3"])   return @"Apple TV 4G";

// Apple Watch
if ([platform isEqualToString:@"Watch1,1"])     return @"Apple Watch";
if ([platform isEqualToString:@"Watch1,2"])     return @"Apple Watch";

// iPhone
if ([platform isEqualToString:@"iPhone1,1"])    return @"iPhone 2G";
if ([platform isEqualToString:@"iPhone1,2"])    return @"iPhone 3G";
if ([platform isEqualToString:@"iPhone2,1"])    return @"iPhone 3GS";
if ([platform isEqualToString:@"iPhone3,1"])    return @"iPhone 4 (GSM)";
if ([platform isEqualToString:@"iPhone3,2"])    return @"iPhone 4 (GSM/2012)";
if ([platform isEqualToString:@"iPhone3,3"])    return @"iPhone 4 (CDMA)";
if ([platform isEqualToString:@"iPhone4,1"])    return @"iPhone 4S";
if ([platform isEqualToString:@"iPhone5,1"])    return @"iPhone 5 (GSM)";
if ([platform isEqualToString:@"iPhone5,2"])    return @"iPhone 5 (Global)";
if ([platform isEqualToString:@"iPhone5,3"])    return @"iPhone 5c (GSM)";
if ([platform isEqualToString:@"iPhone5,4"])    return @"iPhone 5c (Global)";
if ([platform isEqualToString:@"iPhone6,1"])    return @"iPhone 5s (GSM)";
if ([platform isEqualToString:@"iPhone6,2"])    return @"iPhone 5s (Global)";
if ([platform isEqualToString:@"iPhone7,2"])    return @"iPhone 6";
if ([platform isEqualToString:@"iPhone7,1"])    return @"iPhone 6 Plus";
if ([platform isEqualToString:@"iPhone8,1"])    return @"iPhone 6s";
if ([platform isEqualToString:@"iPhone8,2"])    return @"iPhone 6s Plus";
if ([platform isEqualToString:@"iPhone8,4"])    return @"iPhone SE";
if ([platform isEqualToString:@"iPhone9,1"])    return @"iPhone 7 (Global)";
if ([platform isEqualToString:@"iPhone9,3"])    return @"iPhone 7 (GSM)";
if ([platform isEqualToString:@"iPhone9,2"])    return @"iPhone 7 Plus (Global)";
if ([platform isEqualToString:@"iPhone9,4"])    return @"iPhone 7 Plus (GSM)";

// iPad
if ([platform isEqualToString:@"iPad1,1"])      return @"iPad 1";
if ([platform isEqualToString:@"iPad2,1"])      return @"iPad 2 (WiFi)";
if ([platform isEqualToString:@"iPad2,2"])      return @"iPad 2 (GSM)";
if ([platform isEqualToString:@"iPad2,3"])      return @"iPad 2 (CDMA)";
if ([platform isEqualToString:@"iPad2,4"])      return @"iPad 2 (Mid 2012)";
if ([platform isEqualToString:@"iPad3,1"])      return @"iPad 3 (WiFi)";
if ([platform isEqualToString:@"iPad3,2"])      return @"iPad 3 (CDMA)";
if ([platform isEqualToString:@"iPad3,3"])      return @"iPad 3 (GSM)";
if ([platform isEqualToString:@"iPad3,4"])      return @"iPad 4 (WiFi)";
if ([platform isEqualToString:@"iPad3,5"])      return @"iPad 4 (GSM)";
if ([platform isEqualToString:@"iPad3,6"])      return @"iPad 4 (Global)";

// iPad Air
if ([platform isEqualToString:@"iPad4,1"])      return @"iPad Air (WiFi)";
if ([platform isEqualToString:@"iPad4,2"])      return @"iPad Air (Cellular)";
if ([platform isEqualToString:@"iPad4,3"])      return @"iPad Air (China)";
if ([platform isEqualToString:@"iPad5,3"])      return @"iPad Air 2 (WiFi)";
if ([platform isEqualToString:@"iPad5,4"])      return @"iPad Air 2 (Cellular)";

// iPad Mini
if ([platform isEqualToString:@"iPad2,5"])      return @"iPad Mini (WiFi)";
if ([platform isEqualToString:@"iPad2,6"])      return @"iPad Mini (GSM)";
if ([platform isEqualToString:@"iPad2,7"])      return @"iPad Mini (Global)";
if ([platform isEqualToString:@"iPad4,4"])      return @"iPad Mini 2 (WiFi)";
if ([platform isEqualToString:@"iPad4,5"])      return @"iPad Mini 2 (Cellular)";
if ([platform isEqualToString:@"iPad4,6"])      return @"iPad Mini 2 (China)";
if ([platform isEqualToString:@"iPad4,7"])      return @"iPad Mini 3 (WiFi)";
if ([platform isEqualToString:@"iPad4,8"])      return @"iPad Mini 3 (Cellular)";
if ([platform isEqualToString:@"iPad4,9"])      return @"iPad Mini 3 (China)";
if ([platform isEqualToString:@"iPad5,1"])      return @"iPad Mini 4 (WiFi)";
if ([platform isEqualToString:@"iPad5,2"])      return @"iPad Mini 4 (Cellular)";

// iPad Pro
if ([platform isEqualToString:@"iPad6,3"])      return @"iPad Pro (9.7 inch/WiFi)";
if ([platform isEqualToString:@"iPad6,4"])      return @"iPad Pro (9.7 inch/Cellular)";
if ([platform isEqualToString:@"iPad6,7"])      return @"iPad Pro (12.9 inch/WiFi)";
if ([platform isEqualToString:@"iPad6,8"])      return @"iPad Pro (12.9 inch/Cellular)";

// iPod
if ([platform isEqualToString:@"iPod1,1"])      return @"iPod Touch 1G";
if ([platform isEqualToString:@"iPod2,1"])      return @"iPod Touch 2G";
if ([platform isEqualToString:@"iPod3,1"])      return @"iPod Touch 3G";
if ([platform isEqualToString:@"iPod4,1"])      return @"iPod Touch 4G";
if ([platform isEqualToString:@"iPod5,1"])      return @"iPod Touch 5G";
if ([platform isEqualToString:@"iPod7,1"])      return @"iPod Touch 6G";

// Simulator
if ([platform isEqualToString:@"i386"])         return @"Simulator";
if ([platform isEqualToString:@"x86_64"])       return @"Simulator";