Wanna find your iPhone’s UDID. But many of us must be curious to know what is UDID. Your iPhone has a Unique Device Identifier (UDID), which is a sequence of 40 letters and numbers that is specific to your device. It’s like a serial number but much harder to guess. It will look something like this:2b6f0cc904d137be2e1730235f5664094b831186.
Curious why you need to know UDID? Your iPhone can only install programs that are approved by Apple. Applications in the App Store have been approved by Apple for general distribution, but beta customers get to try the app before it’s in the store. Thus you to have to register your UDID with Apple so they can approve your application especially for your iPhone.
How will you find then your UDID
1. Connect your iPhone to a computer via USB and launch iTunes.
2. Choose your iPhone from the navigation menu at the top left and make sure the Summary section is selected.
3. Click the serial number of your device to display your UDID. Even though you can’t highlight the UDID, you can press Command+C or Control+C to copy the UDID to your clipboard.
If you want to have UDID without launching iTunes watch this video