关于iPhone机型，通过代码只能获取到iPhone产品的内部编号，在此将网上资料整理得到iPhone 4 - iPhone XS Max机型（日期2018.10.31止）iPhone内部编号对应的机型以及部分iPad机型，提供给有需要者。

首先导入头文件 #import "sys/utsname.h"，系统方法获取iPhone产品内部编号

struct utsname systemInfo;
uname(&systemInfo);
NSString *platform = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];

获取到内部编号，通过判断返回机型

    if ([platform isEqualToString:@"iPhone3,1"]) return @"iPhone 4 (A1332)";
    if ([platform isEqualToString:@"iPhone3,2"]) return @"iPhone 4 (A1332)";
    if ([platform isEqualToString:@"iPhone3,3"]) return @"iPhone 4 (A1349)";
    if ([platform isEqualToString:@"iPhone4,1"]) return @"iPhone 4s (A1387/A1431)";
    if ([platform isEqualToString:@"iPhone5,1"]) return @"iPhone 5 (A1428)";
    if ([platform isEqualToString:@"iPhone5,2"]) return @"iPhone 5 (A1429/A1442)";
    if ([platform isEqualToString:@"iPhone5,3"]) return @"iPhone 5c (A1456/A1532)";
    if ([platform isEqualToString:@"iPhone5,4"]) return @"iPhone 5c (A1507/A1516/A1526/A1529)";
    if ([platform isEqualToString:@"iPhone6,1"]) return @"iPhone 5s (A1453/A1533)";
    if ([platform isEqualToString:@"iPhone6,2"]) return @"iPhone 5s (A1457/A1518/A1528/A1530)";
    if ([platform isEqualToString:@"iPhone7,1"]) return @"iPhone 6 Plus (A1522/A1524)";
    if ([platform isEqualToString:@"iPhone7,2"]) return @"iPhone 6 (A1549/A1586)";
    if ([platform isEqualToString:@"iPhone8,1"]) return @"iPhone 6s";
    if ([platform isEqualToString:@"iPhone8,2"]) return @"iPhone 6s Plus";
    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)";
    if ([platform isEqualToString:@"iPhone10,1"]) return @"iPhone 8 (Global)";
    if ([platform isEqualToString:@"iPhone10,4"]) return @"iPhone 8 (GSM)";
    if ([platform isEqualToString:@"iPhone10,2"]) return @"iPhone 8 Plus (Global)";
    if ([platform isEqualToString:@"iPhone10,5"]) return @"iPhone 8 Plus (GSM)";
    if ([platform isEqualToString:@"iPhone10,3"]) return @"iPhone X (Global)";
    if ([platform isEqualToString:@"iPhone10,6"]) return @"iPhone X (GSM)";
    if ([platform isEqualToString:@"iPhone11,2"]) return @"iPhone XS";
    if ([platform isEqualToString:@"iPhone11,4"]) return @"iPhone XS Max";
    if ([platform isEqualToString:@"iPhone11,6"]) return @"iPhone XS Max";
    if ([platform isEqualToString:@"iPhone11,8"]) return @"iPhone XR";

    if ([platform isEqualToString:@"iPod1,1"])   return @"iPod Touch 1G (A1213)";
    if ([platform isEqualToString:@"iPod2,1"])   return @"iPod Touch 2G (A1288)";
    if ([platform isEqualToString:@"iPod3,1"])   return @"iPod Touch 3G (A1318)";
    if ([platform isEqualToString:@"iPod4,1"])   return @"iPod Touch 4G (A1367)";
    if ([platform isEqualToString:@"iPod5,1"])   return @"iPod Touch 5G (A1421/A1509)";
    
    if ([platform isEqualToString:@"iPad1,1"])   return @"iPad 1G (A1219/A1337)";
    
    if ([platform isEqualToString:@"iPad2,1"])   return @"iPad 2 (A1395)";
    if ([platform isEqualToString:@"iPad2,2"])   return @"iPad 2 (A1396)";
    if ([platform isEqualToString:@"iPad2,3"])   return @"iPad 2 (A1397)";
    if ([platform isEqualToString:@"iPad2,4"])   return @"iPad 2 (A1395+New Chip)";
    if ([platform isEqualToString:@"iPad2,5"])   return @"iPad Mini 1G (A1432)";
    if ([platform isEqualToString:@"iPad2,6"])   return @"iPad Mini 1G (A1454)";
    if ([platform isEqualToString:@"iPad2,7"])   return @"iPad Mini 1G (A1455)";
    
    if ([platform isEqualToString:@"iPad3,1"])   return @"iPad 3 (A1416)";
    if ([platform isEqualToString:@"iPad3,2"])   return @"iPad 3 (A1403)";
    if ([platform isEqualToString:@"iPad3,3"])   return @"iPad 3 (A1430)";
    if ([platform isEqualToString:@"iPad3,4"])   return @"iPad 4 (A1458)";
    if ([platform isEqualToString:@"iPad3,5"])   return @"iPad 4 (A1459)";
    if ([platform isEqualToString:@"iPad3,6"])   return @"iPad 4 (A1460)";
    
    if ([platform isEqualToString:@"iPad4,1"])   return @"iPad Air (A1474)";
    if ([platform isEqualToString:@"iPad4,2"])   return @"iPad Air (A1475)";
    if ([platform isEqualToString:@"iPad4,3"])   return @"iPad Air (A1476)";
    if ([platform isEqualToString:@"iPad4,4"])   return @"iPad Mini 2G (A1489)";
    if ([platform isEqualToString:@"iPad4,5"])   return @"iPad Mini 2G (A1490)";
    if ([platform isEqualToString:@"iPad4,6"])   return @"iPad Mini 2G (A1491)";
    
    if ([platform isEqualToString:@"i386"])      return @"iPhone Simulator";
    if ([platform isEqualToString:@"x86_64"])    return @"iPhone Simulator";
    return platform;  // 所有机型配不上，返回系统版本号