iPhone各机型对应的内部编号网站：https://www.theiphonewiki.com/wiki/Models

获取设备型号

https://theapplewiki.com/wiki/Models

详细链接

iPhone https://theapplewiki.com/wiki/Models#iPhone
iPod_touch https://theapplewiki.com/wiki/Models#iPod_touch
iPad_mini https://theapplewiki.com/wiki/Models#iPad_mini
iPad_Pro https://theapplewiki.com/wiki/Models#iPad_Pro
iPad_Air https://theapplewiki.com/wiki/Models#iPad_Air
iPad https://theapplewiki.com/wiki/Models#iPad

具体代码如下，直到iPhone XS Max，只提供OC版本，swift版本请自行仿写：

+ (NSString *)currentModel{
     struct utsname systemInfo;
     uname(&systemInfo);
     NSString *phoneModel = [NSString stringWithCString:systemInfo.machine encoding:NSASCIIStringEncoding];
     if ([phoneModel isEqualToString:@"iPhone3,1"]||
         [phoneModel isEqualToString:@"iPhone3,2"]||
         [phoneModel isEqualToString:@"iPhone3,3"]) return @"iPhone 4";
     if ([phoneModel isEqualToString:@"iPhone4,1"]) return @"iPhone 4S";
     if ([phoneModel isEqualToString:@"iPhone5,1"]||
         [phoneModel isEqualToString:@"iPhone5,2"]) return @"iPhone 5";
     if ([phoneModel isEqualToString:@"iPhone5,3"]||
         [phoneModel isEqualToString:@"iPhone5,4"]) return @"iPhone 5C";
     if ([phoneModel isEqualToString:@"iPhone6,1"]||
         [phoneModel isEqualToString:@"iPhone6,2"]) return @"iPhone 5S";
     if ([phoneModel isEqualToString:@"iPhone7,1"]) return @"iPhone 6 Plus";
     if ([phoneModel isEqualToString:@"iPhone7,2"]) return @"iPhone 6";
     if ([phoneModel isEqualToString:@"iPhone8,1"]) return @"iPhone 6s";
     if ([phoneModel isEqualToString:@"iPhone8,2"]) return @"iPhone 6s Plus";
     if ([phoneModel isEqualToString:@"iPhone8,4"]) return @"iPhone SE";
     if ([phoneModel isEqualToString:@"iPhone9,1"]||
         [phoneModel isEqualToString:@"iPhone9,3"]) return @"iPhone 7";
     if ([phoneModel isEqualToString:@"iPhone9,2"]||
         [phoneModel isEqualToString:@"iPhone9,4"]) return @"iPhone 7 Plus";
     if ([phoneModel isEqualToString:@"iPhone10,1"]||
         [phoneModel isEqualToString:@"iPhone10,4"]) return @"iPhone 8";
     if ([phoneModel isEqualToString:@"iPhone10,2"]||
         [phoneModel isEqualToString:@"iPhone10,5"]) return @"iPhone 8 Plus";
     if ([phoneModel isEqualToString:@"iPhone10,3"]||
         [phoneModel isEqualToString:@"iPhone10,6"]) return @"iPhone X";
     if ([phoneModel isEqualToString:@"iPhone11,2"]) return @"iPhone XS";
     if ([phoneModel isEqualToString:@"iPhone11,4"]||
         [phoneModel isEqualToString:@"iPhone11,6"]) return @"iPhone XS Max";
     if ([phoneModel isEqualToString:@"iPhone11,8"]) return @"iPhone XR";
     
     if ([phoneModel isEqualToString:@"iPad1,1"]) return @"iPad";
     if ([phoneModel isEqualToString:@"iPad2,1"] ||
         [phoneModel isEqualToString:@"iPad2,2"] ||
         [phoneModel isEqualToString:@"iPad2,3"] ||
         [phoneModel isEqualToString:@"iPad2,4"]) return @"iPad 2";
     if ([phoneModel isEqualToString:@"iPad3,1"] ||
         [phoneModel isEqualToString:@"iPad3,2"] ||
         [phoneModel isEqualToString:@"iPad3,3"]) return @"iPad 3";
     if ([phoneModel isEqualToString:@"iPad3,4"] ||
         [phoneModel isEqualToString:@"iPad3,5"] ||
         [phoneModel isEqualToString:@"iPad3,6"]) return @"iPad 4";
     if ([phoneModel isEqualToString:@"iPad4,1"] ||
         [phoneModel isEqualToString:@"iPad4,2"] ||
         [phoneModel isEqualToString:@"iPad4,3"]) return @"iPad Air";
     if ([phoneModel isEqualToString:@"iPad5,3"] ||
         [phoneModel isEqualToString:@"iPad5,4"]) return @"iPad Air 2";
     if ([phoneModel isEqualToString:@"iPad6,3"] ||
         [phoneModel isEqualToString:@"iPad6,4"]) return @"iPad Pro 9.7-inch";
     if ([phoneModel isEqualToString:@"iPad6,7"] ||
         [phoneModel isEqualToString:@"iPad6,8"]) return @"iPad Pro 12.9-inch";
     if ([phoneModel isEqualToString:@"iPad6,11"] ||
         [phoneModel isEqualToString:@"iPad6,12"]) return @"iPad 5";
     if ([phoneModel isEqualToString:@"iPad7,1"] ||
         [phoneModel isEqualToString:@"iPad7,2"]) return @"iPad Pro 12.9-inch 2";
     if ([phoneModel isEqualToString:@"iPad7,3"] ||
         [phoneModel isEqualToString:@"iPad7,4"]) return @"iPad Pro 10.5-inch";
     
     if ([phoneModel isEqualToString:@"iPad2,5"] ||
         [phoneModel isEqualToString:@"iPad2,6"] ||
         [phoneModel isEqualToString:@"iPad2,7"]) return @"iPad mini";
     if ([phoneModel isEqualToString:@"iPad4,4"] ||
         [phoneModel isEqualToString:@"iPad4,5"] ||
         [phoneModel isEqualToString:@"iPad4,6"]) return @"iPad mini 2";
     if ([phoneModel isEqualToString:@"iPad4,7"] ||
         [phoneModel isEqualToString:@"iPad4,8"] ||
         [phoneModel isEqualToString:@"iPad4,9"]) return @"iPad mini 3";
     if ([phoneModel isEqualToString:@"iPad5,1"] ||
         [phoneModel isEqualToString:@"iPad5,2"]) return @"iPad mini 4";
     
     if ([phoneModel isEqualToString:@"iPod1,1"]) return @"iTouch";
     if ([phoneModel isEqualToString:@"iPod2,1"]) return @"iTouch2";
     if ([phoneModel isEqualToString:@"iPod3,1"]) return @"iTouch3";
     if ([phoneModel isEqualToString:@"iPod4,1"]) return @"iTouch4";
     if ([phoneModel isEqualToString:@"iPod5,1"]) return @"iTouch5";
     if ([phoneModel isEqualToString:@"iPod7,1"]) return @"iTouch6";
     
     if ([phoneModel isEqualToString:@"i386"] || [phoneModel isEqualToString:@"x86_64"]) return @"iPhone Simulator";
     
     return @"Unknown";
}