NB: Download the best free game that has just hit the AppStore: GuessMate
Each iPhone, iPad or iPod Touch has a Unique Device Identifier (UDID), which is a sequence of 40 letters and numbers which is specific to your device. It’s similar to a serial number but much harder to guess.It will look something like this: 4c5g0bb289w456eb4t2456788h4557897g442252.
Why do we need UDID Number? Your iPhone can only install programs that are approved by Apple. Apps in the iTunes App Store have been approved by Apple for general distribution, but beta customers can try the app before it’s publicly available. Developers will register your UDID with Apple, so that you can start using your application without releasing it first.
How do I find my UDID number? There are two different ways:
1) You can copy/paste your UDID from iTunes or email it directly from your device by using a free app from the App Store. In order to do that:
a) Start iTunes and connect your iPhone/iPod Touch.
b) On your device's Summary page, click on the word "Serial Number:". Please note the serial number is not the same as the UDID.
c) After you click on the words "Serial Number:", it should change to the word "Identifier (UDID):" and the numbers and letters to the right will change from something like that: 83649KAD3NP to something like that: 4c5g0bb289w456eb4t2456788h4557897g442252. This long string of letters and numbers is your UDID number.
d) Press CTRL+C (Windows) or Command/AppleKey + C (Mac) and your UDID number will be copied to the clipboard, which can then be pasted into an e-mail
2) Alternatively, install and run our free app Easy.Share. It will create an email with your UDID number. Just put your intended recipient's email address in the "TO" field and "Hey, Presto".