How do I find the UDID of my iPhone/iPod Touch?

If you are beta testing Stanza, or working with a Stanza developer to track down an issue, we will almost certainly have to ask you to provide your UDID. This page describes details of what a UDID actually is, and how to find it.

When manufactured every iPhone is assigned an identifier that is unique to that physical device. This is known as the UDID ("Unique Device Identifier "), but is also commonly referred to as the "UUID", an acronym for Universally Unique Identifier. It's worth noting that the UDID is anonymous, e.g. if you have a UDID there is no way to tie that to a person.

iTunes will only install applications that have been digitally "signed" by a developer using an Apple-provided certificate. Applications can either be signed for the AppStore where they can be used by anyone who purchases a copy, or for AdHoc distribution where users install the application by adding it to iTunes. With Adhoc distribution the developer must include the UDID of all devices in the certificate for the application. This is intended to prevent people freely distributing their applications.

Below are instructions for retrieving your UDID. Alternatively you can download Erica Sudan’s most helpful and free AdHoc Helper Application from the AppStore.

1) Start iTunes and connect your iPhone/iPod Touch.

2) On the Summary page for your iPhone/iPod, click on the word "Serial Number:" text. Note that the serial number is not the same as the UDID


3) After you click on the words "Serial Number:", it should change to the word "Identifier", followed by a long string of numbers and digits. This long string is your UDID.


4) Press CTRL+C (Windows) or Command/AppleKey + C (Mac) and the UDID will be copied to the clipboard, which can then be pasted into an e-mail or otherwise conveyed to Lexcycle.

(these instructions are inspired by the very helpful page at Photo Speed Dial)