ZenBrains

In order to find your device id you have to:

1. Connect the device to your computer (Mac or Windows).
2. Open the iTunes.
3. Select your device.
   
   .
4. Go to summary tab and click on “Serial Number”. You’ll notice that the “Serial Number” changes to “Identifier”.
   
   

   After clicking on the “Serial Number” we must see something like this:
   
   

Finally if you want to copy the id: click on Edit > Copy (while the Identifier is visible).

If you haven’t access to your computer but you have Internet connection you can download some free specialized apps (Info – UDID or Info – UDID Sender) from AppStore which can provide you with your device id information.