Get serial number of device on iOS 8

Question

For an in-house application, we were using the following code UIDevice+serialNumber to get the device serial number. However, it seems that with iOS 8, the registry key \"IOPlat

Answer 1

As Helger stated above, UDID is no longer available in iOS 6+ due to security / privacy reasons. Instead, use identifierForVendor or advertisingIdentifier Please check UDID Replacement APIs

For iOS 8+

+ (NSString *)deviceUUID
{
if([[NSUserDefaults standardUserDefaults] objectForKey:[[NSBundle mainBundle] bundleIdentifier]])
    return [[NSUserDefaults standardUserDefaults] objectForKey:[[NSBundle mainBundle] bundleIdentifier]];

@autoreleasepool {

    CFUUIDRef uuidReference = CFUUIDCreate(nil);
    CFStringRef stringReference = CFUUIDCreateString(nil, uuidReference);
    NSString *uuidString = (__bridge NSString *)(stringReference);
    [[NSUserDefaults standardUserDefaults] setObject:uuidString forKey:[[NSBundle mainBundle] bundleIdentifier]];
    [[NSUserDefaults standardUserDefaults] synchronize];
    CFRelease(uuidReference);
    CFRelease(stringReference);
    return uuidString;
 }
}

You can use identifierForVendor after that store them to keychain and use later. Because value of keychain will not changed when re-install app.

I used to use Open UDID for this purpose. Don't know if it still works.