The Unique Device Identifier (UDID) is a 40-character alphanumeric code that works as a device identification mechanism. If you’re an app developer and wish to test your latest project, you’ll likely be asked for the UDID. In this article, we’ll explain how to find the UDID of an iPhone or iPad. Let’s check it out!
- How to find UDID on iPhone or iPad
- How to find your iPhone’s UDID without iTunes
- Find UDID (Unique Device Identifier) on iPhone or iPad using Xcode
- What’s the difference between UDID and UUID?
This method works on iPhone 12 Series, iPhone SE 2020, iPhone 11, iPhone X series, iPhone 8, and earlier devices.
- Open Safari on your iOS device and head over to
- Next, a popup will appear, saying “The website is trying to download a configuration profile. Do you want to allow this?” Tap Allow.
- Next up, another popup will appear to confirm that the profile has downloaded and suggest installing it from Settings. Tap Close.
- Up next, open Settings on your device and then tap on the Profile Downloaded option.
- Now, tap Install at the top right. You’ll need to authenticate using your passcode. Then, tap Install again.
- You will be directed to the site where you’ll see the UDID of your iOS device. (It’ll also show other information like IMEI, serial number, etc.) Now you can copy UDID and save it at the desired location or send it via email.
Finally, now that you’ve found the UDID of your iOS device, delete the profile. Just go back to Settings → Tap Profile Downloaded → Tap Remove Downloaded Profile.
How to find your iPhone’s UDID without iTunes
- First, connect your iPhone to your Mac.
- Now, click on the Apple logo at the top right and select About This Mac.
- Next, click System Report.
- From the Hardware section, click USB.
- Next up, click on the connected iPhone.
- Check out the Serial Number label. Copy the number next to it and paste it in a note. Now, add a – (hyphen) after the 8th digit.
Let’s say, the serial number looks like: 000011114567899. When you include the hyphen, it will be: 00001111-4567899. It’s your iPhone’s UDID.
Find UDID (Unique Device Identifier) on iPhone or iPad using Xcode
Here’s how to get the UDID of any iPhone or iPad using Xcode. Xcode is a tool made by Apple for developing apps for iOS, watchOS, macOS, and tvOS.
- First off, download Xcode if you haven’t already. It’s free.
Note: Installing Xcode takes considerable time. At least you’ll have time to work on something else!
- Now, connect your iPhone to the Mac using a USB cable.
- Next, open Xcode → Click Window and select Devices and Simulators. Alternatively, you can just use this shortcut: Command + Shift + 2
- Next up, ensure that the Devices tab is selected. Then, check out your iPhone’s UDID.
Now that you’ve got the ID, copy it and use it wherever you want.
What’s the difference between UDID and UUID?
As stated earlier, UDID is the unique 40 hexadecimal identifier code of your Apple device. On the other hand, UUID stands for “Universally Unique Identifier”, which is on a per-app basis. It recognizes an app installed on your device, and it’ll stay on your iPhone until you delete the app. If any user deletes the app from their iOS device and downloads the app again, the ID will be different.
So, in short, UDID is the unique identity of your device, and UUID is the unique identity of an app for as long as it’s installed.
This is how you can find the UDID of your iPhone and iPad. In 2013, UDID captured a lot of media attention as third-party app developers were sharing this ID with advertising agencies and marketing companies. Apple showed its displeasure and sent an ultimatum to all third-party app developers that if they share UDID of iPhones, Mac, or Apple Watch, their apps won’t find a place in the App Store.
Have any questions? Leave them in the comments, and we’ll do our best to help you out!
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