用以下代码添加一个新文件，并简单地调用UIDevice。modelName包含迄今为止发布的所有型号，包括iPhone 13系列和Swift 5.0

import UIKit
import SystemConfiguration

public extension UIDevice {
    static let modelName: String = {
        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, value != 0 else { return identifier }
            return identifier + String(UnicodeScalar(UInt8(value)))
        }
        
        let deviceMapping = ["i386": "iPhone Simulator",
         "x86_64": "iPhone Simulator",
         "arm64": "iPhone Simulator",
         "iPhone1,1": "iPhone",
         "iPhone1,2": "iPhone 3G",
         "iPhone2,1": "iPhone 3GS",
         "iPhone3,1": "iPhone 4",
         "iPhone3,2": "iPhone 4 GSM Rev A",
         "iPhone3,3": "iPhone 4 CDMA",
         "iPhone4,1": "iPhone 4S",
         "iPhone5,1": "iPhone 5 (GSM)",
         "iPhone5,2": "iPhone 5 (GSM+CDMA)",
         "iPhone5,3": "iPhone 5C (GSM)",
         "iPhone5,4": "iPhone 5C (Global)",
         "iPhone6,1": "iPhone 5S (GSM)",
         "iPhone6,2": "iPhone 5S (Global)",
         "iPhone7,1": "iPhone 6 Plus",
         "iPhone7,2": "iPhone 6",
         "iPhone8,1": "iPhone 6s",
         "iPhone8,2": "iPhone 6s Plus",
         "iPhone8,4": "iPhone SE (GSM)",
         "iPhone9,1": "iPhone 7",
         "iPhone9,2": "iPhone 7 Plus",
         "iPhone9,3": "iPhone 7",
         "iPhone9,4": "iPhone 7 Plus",
         "iPhone10,1": "iPhone 8",
         "iPhone10,2": "iPhone 8 Plus",
         "iPhone10,3": "iPhone X Global",
         "iPhone10,4": "iPhone 8",
         "iPhone10,5": "iPhone 8 Plus",
         "iPhone10,6": "iPhone X GSM",
         "iPhone11,2": "iPhone XS",
         "iPhone11,4": "iPhone XS Max",
         "iPhone11,6": "iPhone XS Max Global",
         "iPhone11,8": "iPhone XR",
         "iPhone12,1": "iPhone 11",
         "iPhone12,3": "iPhone 11 Pro",
         "iPhone12,5": "iPhone 11 Pro Max",
         "iPhone12,8": "iPhone SE 2nd Gen",
         "iPhone13,1": "iPhone 12 Mini",
         "iPhone13,2": "iPhone 12",
         "iPhone13,3": "iPhone 12 Pro",
         "iPhone13,4": "iPhone 12 Pro Max",
         "iPhone14,2": "iPhone 13 Pro",
         "iPhone14,3": "iPhone 13 Pro Max",
         "iPhone14,4": "iPhone 13 Mini",
         "iPhone14,5": "iPhone 13",
         "iPod1,1": "1st Gen iPod",
         "iPod2,1": "2nd Gen iPod",
         "iPod3,1": "3rd Gen iPod",
         "iPod4,1": "4th Gen iPod",
         "iPod5,1": "5th Gen iPod",
         "iPod7,1": "6th Gen iPod",
         "iPod9,1": "7th Gen iPod",
         "iPad1,1": "iPad",
         "iPad1,2": "iPad 3G",
         "iPad2,1": "2nd Gen iPad",
         "iPad2,2": "2nd Gen iPad GSM",
         "iPad2,3": "2nd Gen iPad CDMA",
         "iPad2,4": "2nd Gen iPad New Revision",
         "iPad3,1": "3rd Gen iPad",
         "iPad3,2": "3rd Gen iPad CDMA",
         "iPad3,3": "3rd Gen iPad GSM",
         "iPad2,5": "iPad mini",
         "iPad2,6": "iPad mini GSM+LTE",
         "iPad2,7": "iPad mini CDMA+LTE",
         "iPad3,4": "4th Gen iPad",
         "iPad3,5": "4th Gen iPad GSM+LTE",
         "iPad3,6": "4th Gen iPad CDMA+LTE",
         "iPad4,1": "iPad Air (WiFi)",
         "iPad4,2": "iPad Air (GSM+CDMA)",
         "iPad4,3": "1st Gen iPad Air (China)",
         "iPad4,4": "iPad mini Retina (WiFi)",
         "iPad4,5": "iPad mini Retina (GSM+CDMA)",
         "iPad4,6": "iPad mini Retina (China)",
         "iPad4,7": "iPad mini 3 (WiFi)",
         "iPad4,8": "iPad mini 3 (GSM+CDMA)",
         "iPad4,9": "iPad Mini 3 (China)",
         "iPad5,1": "iPad mini 4 (WiFi)",
         "iPad5,2": "4th Gen iPad mini (WiFi+Cellular)",
         "iPad5,3": "iPad Air 2 (WiFi)",
         "iPad5,4": "iPad Air 2 (Cellular)",
         "iPad6,3": "iPad Pro (9.7 inch, WiFi)",
         "iPad6,4": "iPad Pro (9.7 inch, WiFi+LTE)",
         "iPad6,7": "iPad Pro (12.9 inch, WiFi)",
         "iPad6,8": "iPad Pro (12.9 inch, WiFi+LTE)",
         "iPad6,11": "iPad (2017)",
         "iPad6,12": "iPad (2017)",
         "iPad7,1": "iPad Pro 2nd Gen (WiFi)",
         "iPad7,2": "iPad Pro 2nd Gen (WiFi+Cellular)",
         "iPad7,3": "iPad Pro 10.5-inch",
         "iPad7,4": "iPad Pro 10.5-inch",
         "iPad7,5": "iPad 6th Gen (WiFi)",
         "iPad7,6": "iPad 6th Gen (WiFi+Cellular)",
         "iPad7,11": "iPad 7th Gen 10.2-inch (WiFi)",
         "iPad7,12": "iPad 7th Gen 10.2-inch (WiFi+Cellular)",
         "iPad8,1": "iPad Pro 11 inch 3rd Gen (WiFi)",
         "iPad8,2": "iPad Pro 11 inch 3rd Gen (1TB, WiFi)",
         "iPad8,3": "iPad Pro 11 inch 3rd Gen (WiFi+Cellular)",
         "iPad8,4": "iPad Pro 11 inch 3rd Gen (1TB, WiFi+Cellular)",
         "iPad8,5": "iPad Pro 12.9 inch 3rd Gen (WiFi)",
         "iPad8,6": "iPad Pro 12.9 inch 3rd Gen (1TB, WiFi)",
         "iPad8,7": "iPad Pro 12.9 inch 3rd Gen (WiFi+Cellular)",
         "iPad8,8": "iPad Pro 12.9 inch 3rd Gen (1TB, WiFi+Cellular)",
         "iPad8,9": "iPad Pro 11 inch 4th Gen (WiFi)",
         "iPad8,10": "iPad Pro 11 inch 4th Gen (WiFi+Cellular)",
         "iPad8,11": "iPad Pro 12.9 inch 4th Gen (WiFi)",
         "iPad8,12": "iPad Pro 12.9 inch 4th Gen (WiFi+Cellular)",
         "iPad11,1": "iPad mini 5th Gen (WiFi)",
         "iPad11,2": "iPad mini 5th Gen",
         "iPad11,3": "iPad Air 3rd Gen (WiFi)",
         "iPad11,4": "iPad Air 3rd Gen",
         "iPad11,6": "iPad 8th Gen (WiFi)",
         "iPad11,7": "iPad 8th Gen (WiFi+Cellular)",
         "iPad13,1": "iPad air 4th Gen (WiFi)",
         "iPad13,2": "iPad air 4th Gen (WiFi+Cellular)",
         "iPad13,4": "iPad Pro 11 inch 3rd Gen",
         "iPad13,5": "iPad Pro 11 inch 3rd Gen",
         "iPad13,6": "iPad Pro 11 inch 3rd Gen",
         "iPad13,7": "iPad Pro 11 inch 3rd Gen",
         "iPad13,8": "iPad Pro 12.9 inch 5th Gen",
         "iPad13,9": "iPad Pro 12.9 inch 5th Gen",
         "iPad13,10": "iPad Pro 12.9 inch 5th Gen",
         "iPad13,11": "iPad Pro 12.9 inch 5th Gen"]
        return deviceMapping[identifier] ?? identifier
    }()
}

以下是Aniruddh基于uname的方法的现代版本，它不依赖于Mirror，应该适用于Swift 4.2及更高版本:

import UIKit

extension UIDevice {
  var machineName: String {
    var info = utsname()
    return withUnsafeMutablePointer(to: &info) { info in
      // We could alternatively return nil here, or handle
      // errors some other way.
      guard uname(info) == 0 else { return model }
      let offset = MemoryLayout.offset(of: \utsname.machine)!
      let machine = UnsafeRawPointer(info).advanced(by: offset).assumingMemoryBound(to: CChar.self)
      return String(cString: machine)
    }
  }
}

扩展OhhMee上面的回答，我添加了一些故障保险，以支持未来未列入列表的设备:

#import <sys/utsname.h>
#import "MyClass.h"

@implementation MyClass
{
    //(your private ivars)
}

- (NSString*) deviceName
{
    struct utsname systemInfo;

    uname(&systemInfo);

    NSString* code = [NSString stringWithCString:systemInfo.machine
                                        encoding:NSUTF8StringEncoding];

    static NSDictionary* deviceNamesByCode = nil;

    if (!deviceNamesByCode) {

        deviceNamesByCode = @{@"i386"      : @"Simulator",
                              @"x86_64"    : @"Simulator",
                              @"iPod1,1"   : @"iPod Touch",        // (Original)
                              @"iPod2,1"   : @"iPod Touch",        // (Second Generation)
                              @"iPod3,1"   : @"iPod Touch",        // (Third Generation)
                              @"iPod4,1"   : @"iPod Touch",        // (Fourth Generation)
                              @"iPod7,1"   : @"iPod Touch",        // (6th Generation)       
                              @"iPhone1,1" : @"iPhone",            // (Original)
                              @"iPhone1,2" : @"iPhone",            // (3G)
                              @"iPhone2,1" : @"iPhone",            // (3GS)
                              @"iPad1,1"   : @"iPad",              // (Original)
                              @"iPad2,1"   : @"iPad 2",            //
                              @"iPad3,1"   : @"iPad",              // (3rd Generation)
                              @"iPhone3,1" : @"iPhone 4",          // (GSM)
                              @"iPhone3,3" : @"iPhone 4",          // (CDMA/Verizon/Sprint)
                              @"iPhone4,1" : @"iPhone 4S",         //
                              @"iPhone5,1" : @"iPhone 5",          // (model A1428, AT&T/Canada)
                              @"iPhone5,2" : @"iPhone 5",          // (model A1429, everything else)
                              @"iPad3,4"   : @"iPad",              // (4th Generation)
                              @"iPad2,5"   : @"iPad Mini",         // (Original)
                              @"iPhone5,3" : @"iPhone 5c",         // (model A1456, A1532 | GSM)
                              @"iPhone5,4" : @"iPhone 5c",         // (model A1507, A1516, A1526 (China), A1529 | Global)
                              @"iPhone6,1" : @"iPhone 5s",         // (model A1433, A1533 | GSM)
                              @"iPhone6,2" : @"iPhone 5s",         // (model A1457, A1518, A1528 (China), A1530 | Global)
                              @"iPhone7,1" : @"iPhone 6 Plus",     //
                              @"iPhone7,2" : @"iPhone 6",          //
                              @"iPhone8,1" : @"iPhone 6S",         //
                              @"iPhone8,2" : @"iPhone 6S Plus",    //
                              @"iPhone8,4" : @"iPhone SE",         //
                              @"iPhone9,1" : @"iPhone 7",          //
                              @"iPhone9,3" : @"iPhone 7",          //
                              @"iPhone9,2" : @"iPhone 7 Plus",     //
                              @"iPhone9,4" : @"iPhone 7 Plus",     //
                              @"iPhone10,1": @"iPhone 8",          // CDMA
                              @"iPhone10,4": @"iPhone 8",          // GSM
                              @"iPhone10,2": @"iPhone 8 Plus",     // CDMA
                              @"iPhone10,5": @"iPhone 8 Plus",     // GSM
                              @"iPhone10,3": @"iPhone X",          // CDMA
                              @"iPhone10,6": @"iPhone X",          // GSM
                              @"iPhone11,2": @"iPhone XS",         //
                              @"iPhone11,4": @"iPhone XS Max",     //
                              @"iPhone11,6": @"iPhone XS Max",     // China
                              @"iPhone11,8": @"iPhone XR",         //
                              @"iPhone12,1": @"iPhone 11",         //
                              @"iPhone12,3": @"iPhone 11 Pro",     //
                              @"iPhone12,5": @"iPhone 11 Pro Max", //

                              @"iPad4,1"   : @"iPad Air",          // 5th Generation iPad (iPad Air) - Wifi
                              @"iPad4,2"   : @"iPad Air",          // 5th Generation iPad (iPad Air) - Cellular
                              @"iPad4,4"   : @"iPad Mini",         // (2nd Generation iPad Mini - Wifi)
                              @"iPad4,5"   : @"iPad Mini",         // (2nd Generation iPad Mini - Cellular)
                              @"iPad4,7"   : @"iPad Mini",         // (3rd Generation iPad Mini - Wifi (model A1599))
                              @"iPad6,7"   : @"iPad Pro (12.9\")", // iPad Pro 12.9 inches - (model A1584) 
                              @"iPad6,8"   : @"iPad Pro (12.9\")", // iPad Pro 12.9 inches - (model A1652) 
                              @"iPad6,3"   : @"iPad Pro (9.7\")",  // iPad Pro 9.7 inches - (model A1673)
                              @"iPad6,4"   : @"iPad Pro (9.7\")"   // iPad Pro 9.7 inches - (models A1674 and A1675)
                              };
    }

    NSString* deviceName = [deviceNamesByCode objectForKey:code];

    if (!deviceName) {
        // Not found on database. At least guess main device type from string contents:

        if ([code rangeOfString:@"iPod"].location != NSNotFound) {
            deviceName = @"iPod Touch";
        }
        else if([code rangeOfString:@"iPad"].location != NSNotFound) {
            deviceName = @"iPad";
        }
        else if([code rangeOfString:@"iPhone"].location != NSNotFound){
            deviceName = @"iPhone";
        }
        else {
            deviceName = @"Unknown";
        }
    }

    return deviceName;
}

// (rest of class implementation omitted)

@end

我也省略了详细的信息(例如:“型号A1507, A1516, A1526(中国)，A1529 |全球”)，并将其放在评论中，以防你想将其用作面向用户的字符串，而不是吓坏他们。

编辑:这个答案使用Swift 2提供了类似的实现。

编辑2:我刚刚添加了iPad Pro型号(两种尺寸)。型号等供日后参考。可以在iPhone Wiki中找到。

编辑3:增加对iPhone XS、iPhone XS Max和iPhone XR的支持。

编辑4:增加对iPhone 11、iPhone 11 Pro和iPhone 11 Pro Max的支持。

不使用镜像也可以在Swift中获取设备名称。Swift可以在需要的地方自动将内容转换为指针。其实很简单:

/// Returns "iPhone1,1", etc.
var deviceName: String {
    var sysinfo = utsname()
    uname(&sysinfo)
    return String(cString: &sysinfo.machine.0)
}

(向这个被低估的答案致敬https://stackoverflow.com/a/43599474/843454)

[[UIDevice currentDevice] model]只返回iPhone或iPod，你不会得到能让你区分不同代设备的型号的数字。

编写这个方法:

#include <sys/sysctl.h>
...

+ (NSString *)getModel {
    size_t size;
    sysctlbyname("hw.machine", NULL, &size, NULL, 0);
    char *model = malloc(size);
    sysctlbyname("hw.machine", model, &size, NULL, 0);
    NSString *deviceModel = [NSString stringWithCString:model encoding:NSUTF8StringEncoding];
    free(model);
    return deviceModel;
}

当你需要模型的时候调用方法[self getModel]，你会得到例如:"iPhone5,1"对于超薄而快速的iPhone5。

一个好的做法是创建一个名为Utils.h/Utils的类。m并在那里放置像getModel这样的方法，这样你就可以从应用程序的任何地方获得这些信息，只需导入类并调用[Utils getModel];

Swift 4或更高版本

extension UIDevice {
    var modelName: String {
        if let modelName = ProcessInfo.processInfo.environment["SIMULATOR_MODEL_IDENTIFIER"] { return modelName }
        var info = utsname()
        uname(&info)
        return String(String.UnicodeScalarView(
                   Mirror(reflecting: info.machine)
                    .children
                    .compactMap {
                        guard let value = $0.value as? Int8 else { return nil }
                        let unicode = UnicodeScalar(UInt8(value))
                        return unicode.isASCII ? unicode : nil
                    }))
    }
}

UIDevice.current.modelName   // "iPad6,4"