Determine exact version of device software is running on.

Step 1 : -first create a NSObject class.

//

//     NameofClass.h

//

#import <Foundation/Foundation.h>

@interface NameOfClass : NSObject 

+ (NSString *) Platform;
+ (NSString *) PlatformString;

@end

//

//     NameofClass.m

//









#import "NameOfClass.m"

#include <sys/types.h>

#include <sys/sysctl.h>








@implementation NameOfClass

 

+ (NSString *) Platform{

    size_t size;

    sysctlbyname("hw.machine", NULL, &size, NULL, 0);

    char *machine = malloc(size);

    sysctlbyname("hw.machine", machine, &size, NULL, 0);

    NSString *platform = [NSString stringWithUTF8String:machine];

    free(machine);

    return platform;

}

 

+ (NSString *) PlatformString{

    NSString *platform = [self platform];

    if ([platform isEqualToString:@"iPhone1,1"])    return @"iPhone 1G";

    if ([platform isEqualToString:@"iPhone1,2"])    return @"iPhone 3G";

    if ([platform isEqualToString:@"iPhone2,1"])    return @"iPhone 3GS";

    if ([platform isEqualToString:@"iPhone3,1"])    return @"iPhone 4";

    if ([platform isEqualToString:@"iPhone3,3"])    return @"Verizon iPhone 4";

    if ([platform isEqualToString:@"iPhone4,1"])    return @"iPhone 4S";

    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:@"iPad1,1"])      return @"iPad";

    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:@"i386"])         return @"Simulator";

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

    return platform;

}

 

@end