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What are the Alternatives of device UDID in iOS? - iOS7 / iOS 6 / iOS 5 – Get Device Unique Identifier UDID

Get Device Unique Identifier UDID

Following code will help you to get the unique-device-identifier known as UDID.
No matter what iOS user is using, you can get the UDID of the current iOS device by following code.
- (NSString*)UDID {
NSString *uuidString = nil;
// get os version
NSUInteger currentOSVersion = [[[[[UIDevice currentDevice] systemVersion] componentsSeparatedByString:@"."] objectAtIndex:0] integerValue];
if(currentOSVersion <= 5) {
if([[NSUserDefaults standardUserDefaults] valueForKey:@"udid"]) {
uuidString = [[NSUserDefaults standardDefaults] valueForKey:@"udid"];
} else {
CFUUIDRef uuidRef = CFUUIDCreate(kCFAllocatorDefault);
uuidString = (NSString *)CFBridgingRelease(CFUUIDCreateString(NULL,uuidRef));
CFRelease(uuidRef);
[[NSUserDefaults standardUserDefaults] setObject:uuidString ForKey:@"udid"];
[[NSUserDefaults standardUserDefaults] synchronize];
}
return uuidString;
} else {
return [UIDevice identifierForVendor];
}
}
So I hope you can now use the alternatives of device UDID easily and quickly. If you have any queries then feel free to reach me with your queries in comment box, and I will try my best to resolve those. Also, if anyone has alternatives other than above 3, then pl. share those in comment box, so for our readers and iOS developers, it is helpful to use it in their projects.

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