Send it from your device

Visit this page in Safari on your iOS device to install a profile that sends us your UDID automatically. This is the easiest and most reliable way.

Copy it from Xcode

Note: This is currently the only way to find an Apple Watch's UDID.

  1. Connect your device to your Mac and launch Xcode.
  2. Open Window > Devices and select your device.
  3. Highlight the 25 or 40 character UDID string in the Identifier field and copy it.

Copy it from iTunes

Connect your iOS device to your computer and open iTunes.

Select your iPhone, iPad, or iPod touch when it appears in iTunes.

Click on the serial number to switch to your device's UDID.

Copy the UDID using ⌘C, right-click, or the Edit menu.

Return to the registration page and paste your UDID.