Finding your iDevice's Unique Identifier (UDID)

What is the UDID?

Every iPhone, iPad, and iPod (and now Apple Watch) has a Unique Device Identifier, or UDID for short. A UDID 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.

Why do we need your UDID?

Your iPhone can only install betas if it is approved by Apple. By regiersting your UDID with Apple, your device is able to receive these betas and install them without any errors.

How do I get my UDID?

To get your UDID, follow one of the methods below. Option one requires a computer. Option two requires you to visit this site on your iDevice.

Option 1 - Copy/Paste from iTunes

1. Launch iTunes
2. Connect your iDevice
3. Select your iDevice from the top left menu
4. Click Serial Number under the Summary Tab
5. UDID will now be displayed. ⌘+C (CTRL+C on Windows) to copy to your clip board.
6. Paste your UDID into the UDID field during checkout using ⌘+V (CTRL+V on Windows)

Option 2 - Automatically retrieve UDID from iDevice

1. Visit this site on the iDevice you would like to retrieve the UDID from
2. Click here to install a temporary config file
3. Once complete, click the "Email Me My UDID" button
4. Enter your email address in the To: field and click send
5. Copy and paste your UDID from your email during checkout