How to tell the difference between iPhone 5s/5 and 6 in the Xcode simulator

Question

I've been trying to figure this out for the past few days but keep on getting the same screen size for iPhone 5,5s and 6.--> Height -1136 Width 640. How do I tell the difference between these two devices? Is it the simulator? Do I have to be running on a real device to get the current dimensions? What am I doing wrong? I'm running Xcode 6 on Yosemite and testing with the simulator.

    float heightOfScreen = [[UIScreen mainScreen ] nativeBounds].size.height;
    float widthOfScreen = [[UIScreen mainScreen ] nativeBounds].size.width;
    CGSize size = CGSizeMake(widthOfScreen , heightOfScreen);
    NSLog(@"Size: %@", NSStringFromCGSize(size));


    // Iphone 6 plus H-1704 W-960
    // Iphone 6      H-1136 W-640  <--- (why are they the same)
    // Iphone 5s     H-1136 W-640  <---
    // Iphone 4s     H-960  W-640

Answer 1

Every iPhone has its different internal name:

- (void)viewDidLoad {
    [super viewDidLoad];  

    size_t size;
    sysctlbyname("hw.machine", NULL, &size, NULL, 0);
    char *machine = malloc(size);
    sysctlbyname("hw.machine", machine, &size, NULL, 0);
    NSString *platform = [NSString stringWithCString:machine encoding:NSUTF8StringEncoding];
    NSLog(@"iPhone Device%@",[self platformType:platform]);

    free(machine);
}


- (NSString *) platformType:(NSString *)platform
{
    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 (GSM+CDMA)";
    if ([platform isEqualToString:@"iPhone5,3"])    return @"iPhone 5c (GSM)";
    if ([platform isEqualToString:@"iPhone5,4"])    return @"iPhone 5c (GSM+CDMA)";
    if ([platform isEqualToString:@"iPhone6,1"])    return @"iPhone 5s (GSM)";
    if ([platform isEqualToString:@"iPhone6,2"])    return @"iPhone 5s (GSM+CDMA)";
    if ([platform isEqualToString:@"iPhone7,2"])    return @"iPhone 6";
    if ([platform isEqualToString:@"iPhone7,1"])    return @"iPhone 6 Plus";
    if ([platform isEqualToString:@"i386"])         return @"Simulator";
    if ([platform isEqualToString:@"x86_64"])       return @"Simulator";

    return platform;
}

And by the way iPhone 4, 5 and 6 all have different screen sizes:

iPhone 4, 4S:        (640, 960)
iPhone 5, 5C, 5S:    (640, 1136)
iPhone 6:            (750, 1334)
iPhone 6 Plus:       (1080, 1920)

You can refer to this question: Identify new iPhone model on xcode (5, 5c, 5s)