How can I retrieve the UDID on iOS?

Question

I was wondering if it was possible to find out the UDID of the user\'s iPhone. Can someone shed some light?

Answer 1

I cannot comment, but I would like to warn others. In answer of DZenBot, all methods aren't giving the same results :

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Alternative 1 (NSUUID class):

NSString *udid = [[NSUUID UUID] UUIDString];

Alternative 2 (UIDevice class) (Available in iOS 6.0 and later):

NSString *udid = [[[UIDevice currentDevice] identifierForVendor] UUIDString];

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Alternative 1 generate a random UUID while Alternative 2 give a fixed UID which won't change.