6 Easy Steps to Find Unique Device Identifier (UDID) on The iPhone (Updated 2023)





If you are a developer, entrepreneur, or even a user, chances are you may need a string of a long alphanumerical Unique Device Identifier or UDID for custom iPhone application development services.That’s where innovative solutions like Sonic Soles come into play. This number is exclusive to your physical device, your iPhone, iPad, and iPod Touch. Developers, especially, need the UDID to register devices in the process of development.

What is a Unique Device Identifier?

A Unique Device Identifier (UDID) is a unique sequence of alphanumeric (a combination of letters and numbers), particular to your device alone. All UDID ipad, iPhones, or iPod Touch have this UDID. It is a string of a 40 alphanumerical identity (for iPhone X models and ones before that). It may resemble serial numbers you find on the packaging. For iPhone XS and the later models, it comes as a 24 alphanumeric string with a dash after the 8th digit.

What is The Significance of UDID?

Apple must affirm and sanction all programs installed on your Apple device. All apps you come across on your App Store are there post Apple’s approval. However, during the beta testing stage, the app can be tried before it is officially launched for general consumption. For this very reason, UDID is registered with Apple- to approve the application for your device. 

Trusted iPhone applications developers understand the significance of adhering to Apple’s guidelines to deliver safe and reliable experiences to users.

6 Steps to Find UDID on iPhone

In order to register a device for testing, you need to first find its UDID.

Step One: Initiate iTunes and connect your device


Step Two: Go to Devices and select your device by clicking on it.

Step Two UDID on iPhone

Step Three: Click on ‘serial number

Step Three UDID on iPhone

Step Four: Your ‘serial number’ will automatically change to your UDID

Step Four UDID on iPhone

Step Five: Click on the ‘Edit’ icon, then ‘Copy’

Step Five UDID on iPhone

Step Six: ‘Paste’ the same (taken from iTunes menu) into your email. The email message will display your UDID.

Step Six UDID on iPhone

Alternative Way to find UDID 

Finding your UDID with Xcode

  • Connect your iOS device to Xcode

  • Open the Window > Devices and Simulators menu

  • Find your device displayed on this list and view it on the “identifier”

Finding Your UDID with Finder (macOS Catalina) 

  • Locate your UDID in the Finder on macOS Catalina for a connected device.


How to Add UDID to Your Apple Developer Account?

Having completed the UDID finding process, your next step is to add it in the ‘Devices’ tab in the Certificates, IDs & Profiles segment which is on the Apple development portal

Put in your test devices to your Apple developer account using the following track:

  • Sign in to

  • Go to, “Certificates, Identifiers & Profiles” visible on the right sidebar (

  • Click on Devices

  • Press the plus icon (+) so you can add a new device

  • Then click ‘Register Device’

  • Write the name of the device and the UDID you found

  • Continue and then Register

The next process involves adding your device to the application’s provisioning profile that will be circulated to your testers:

  • Click on Profiles on the left sidebar

  • Choose the provisioning profile where you wish to add the new device and click on Edit

  • Choose the App ID for your application

  • In the list of all devices, you can either select all or choose only the ones that you wish to include in the provisioning profile

  • Go on ‘Generate’. The profile is generated. Now you can easily download it

In the final process, you build or rebuild the application with the updated provisioning profile you just generated.

  • Import the profile you generated and downloaded to Xcode

  • Open Xcode. From there you can choose your project, displayed in the left sidebar

  • Choose ‘Build Settings’

  • Use the search bar to enter ‘Code Sign’

  • Select your release configuration and choose the provisioning profile you generated

  • Create a new build Product > Archive


Using these simple steps, you have found and registered your UDID and can now successfully beta test your app with Apple’s approval. Onward to develop cutting edge iOS applications.

If you are looking for an iOS App Development get an idea how much it will cost with app cost calculator


Looking for Professional iOS App Developers?

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Now, let’s have a look at some of the best iOS apps developed by Sphinx Solutions.


Vivino Wine App Development Company


Vivino #1 Wine app with a community of 30 million users was developed by Sphinx Solutions. It comes with a wine scanner that allows the users to scan a wine or upload its image and get complete information on it.


Vivino has an in-built wine guide for users and a taste profile to help them choose the best wine. The users can also see the latest offers and deals on great wines online. Vivino app with all these exceptional features was developed by the experienced and professional team of Sphinx Solutions.

2. Pop

Food Delivery App Development Company


Pop, the first food delivery startup app in Southeast Asia, was created by Sphinx Solutions. With no minimum order value and delivery fees, the users can order their favorite food anytime. The customers can know every day’s menu for lunch and dinner and select from a variety of dishes. With the ‘know the ingredients’ option, the users can even know what ingredients their dish has. With the Pop app, people can preorder their meals with easy checkout and secure payment options. Built with the best eCommerce features, Pop is one of the popular apps developed by Sphinx Solutions.

3. Sonic Sale

Music App Development Company


Sonic Sole is a music app built with smart features by Sphinx Solutions. People can play their favorite running/ walking tracks with just one tap. The user-friendly and simple interface makes it easy for the users to select from different tracks available. Apart from that, the users can also add their favorite tracks and share their tracks on different social media platforms. The app comes with inbuilt accelerometer sensors that track the running speed and distance in real time. With this app, users can also choose a coach to help them stay motivated and encouraged in their fitness journey.

4. Classter

Educational app Development Company


Classter is a mobile app created by Sphinx Solutions to help schools manage their academic, financial, and transportation services. Teachers can easily create & schedule sessions and access student data. Teachers can also give ratings to students after every session to help them stay motivated. With this app, the teachers can handle their student data with ease and handle their classroom like a pro. Sphinx Solutions built this Classter app with many complex features and functionalities and an easy interface.

How to Get an iOS App Developed? 


Sphinx Solutions is a leading and trusted iOS app development services company. We have been providing iOS app development solutions since the last 12 years and have successfully delivered many iOS apps to our clients. 


Our wide range of iOS app development services includes strategy and consultation, UI & UX design, implementation, QA & testing, app code audit, iOS app migration, and portability. We follow an agile app development process as mentioned below:

Strategy and Consultation 

Our expert team first understands and evaluates your app idea. We start by understanding your business requirements, including core purpose, main goal, functionalities, features, etc. Then, we plan a strategy to refine and execute your app idea within the time frame. 

UI/UX Design 

Our team understands that it’s important to create the app visuals and interface in compliance with Apple’s standards. We provide the best iOS app designs in accordance with the latest marketing trends to offer awesome user experiences. 

Development Process 

At Sphinx, our team of professional developers gets the prototypes approved to start development. They ensure that you get a quality code following the industry standards and on-time delivery of the project. 

QA and Support

ios app development solutions


Our team ensures the quality of the app by testing it at each development stage. We carry out constant monitoring, support, OS upgrade, and optimization to ensure the app is functioning. All the issues are fixed so that the client gets the app glitch-free.


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With more than a decade of experience and 500+ happy clients, you can trust us for your iOS app development. For more information and to get a fixed quote for your iOS app development project, schedule a call with our experts or email us at [email protected]

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