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Whats the difference between UDID and UDID?

What is the difference between UDID and UUID? I know that UDID stands for Unique Device IDentifier and UUID is Universally Unique IDentifier but I want to know what role or functionality each one plays.

Solution

  • This explains it well: Differences between UDID and UUID

    UUID (Universally Unique IDentifier), what you call UI - An id that's per app. It's also per install so if a user reinstalls the app it will be different.

    UDID (Unique Device Identifier) - Is unique to your phone, it's used by apple mainly and is universal between apps.