Apple Will No Longer Approve Apps Using Unique Device Identifier (UDID) Beginning May 1, Must Also Support iPhone 5 and Retina Display

NewImageApple has informed app developers that it will no longer allow apps to use the unique device identifier or UDID after May 1, according to a post on Apple's developer website.

Instead, Apple requests developers use the new 'Vendor or Advertising identifiers' that were introduced in iOS 6. Developers will also be required to support both the Retina display and the iPhone 5's 4-inch display, beginning on May 1.

Using Identifiers in Your Apps
March 21, 2013

Starting May 1, the App Store will no longer accept new apps or app updates that access UDIDs. Please update your apps and servers to associate users with the Vendor or Advertising identifiers introduced in iOS 6. You can find more details in the UIDevice Class Reference.

Make Your Apps Look Great on the Retina Display and iPhone 5
March 21, 2013

Starting May 1, new apps and app updates submitted to the App Store must be built for iOS devices with Retina display and iPhone apps must also support the 4-inch display on iPhone 5. Learn about preparing your apps by reviewing the iOS Human Interface Guidelines.

Apple announced in 2011 that it would be phasing out developer access to UDID's, and instead create a non-identifying marker for advertisers to use. A year ago, it was reported that Apple began quietly rejecting apps for the use of the UDID, but this public announcement suggests Apple has gotten more serious about shutting down use of the identifier.

Apple had been under increased pressure to change how the UDID works due to the privacy implications of a developer knowing which particular iOS device is being used to access their app. Apple and several app developers were sued over the use of the UDID to track users across different apps. While the UDID doesn't specifically identify a user, the sharing of UDIDs across ad networks and apps can help piece together a valuable picture of activity and interests of the user of a specific device. Apple seems to be requiring apps to generate their own unique identifiers for each installation to avoid this ability to share such information across apps.

Popular Stories

ios 18 button bulge

iOS 18 Adds Pop-Out Bezel Animation When Pressing iPhone Buttons

Tuesday June 11, 2024 10:40 am PDT by
iOS 18 includes a small but interesting change for the buttons on the iPhone, adding more of a visual element when changing volume, activating the Action button, or locking the screen. When you press an iPhone button in iOS 18, the display bezel bulges outward slightly. This feature is available for the volume buttons, Action button and the power button, and it will also likely be used for...
iOS 18 Mock iPhone 16 Feature Gray

Revealed: iOS 18 Works With These iPhone Models

Monday June 10, 2024 3:57 am PDT by
iOS 18 will be compatible with the same iPhone models as iOS 17, according to a post on X today from a private account with a proven track record of sharing build numbers for upcoming iOS updates. iOS 18 will be compatible with the iPhone XR, and hence also the iPhone XS and iPhone XS Max models with the same A12 Bionic chip, but older iPhone models will miss out. Here is the full...
Next Gen CarPlay WWDC24 1

Apple Provides Updated Look at Next-Generation CarPlay at WWDC 2024

Monday June 10, 2024 7:11 pm PDT by
Apple today shared a few WWDC 2024 coding sessions related to its upcoming next-generation CarPlay system ahead of its launch later this year. The sessions include lots of updated next-generation CarPlay images, with one revealing new Vehicle, Media, and Climate apps in action for the first time. MacRumors previously discovered evidence of these apps in the iOS 17.4 beta. Next-generation...
ios 18 tile summary

Apple Announces iOS 18 With New Customization Features, Redesigned Photos App, and More

Monday June 10, 2024 10:17 am PDT by
Apple today previewed iOS 18, the next major update to the operating system for the iPhone, with new customization features, a redesigned Photos app, and more. iOS 18 features new customization tools for the Home Screen. App icons now feature Dark Mode and users can tint them with a color to create a unique look. Apps can also now be placed anywhere on the Home Screen freely. The Control...
sequoia

macOS Sequoia and iPadOS 18 Drop Support for These Macs and iPads

Monday June 10, 2024 4:13 pm PDT by
macOS Sequoia is still compatible with several Intel-based Macs, but it does drop support for 2018 and 2019 models of the MacBook Air. macOS Sequoia is compatible with the following Macs, according to Apple: MacBook Pro: 2018 and later MacBook Air: 2020 and later Mac mini: 2018 and later iMac: 2019 and later iMac Pro: 2017 Mac Studio: 2022 and later Mac Pro: 2019 and later The...
maxresdefault

Everything Apple Announced at WWDC 2024 in Nine Minutes

Monday June 10, 2024 7:59 pm PDT by
Apple crammed an overwhelming number of new features into its WWDC 2024 keynote event, introducing Apple Intelligence, iOS 18, iPadOS 18, macOS Sequoia, visionOS 2, watchOS 11, and tvOS 18. It was hard to keep up with everything that Apple highlighted, so we did a video of all of the new additions you won't want to miss. Subscribe to the MacRumors YouTube channel for more videos. We've also...
iOS 18 Siri Integrated Feature

Massive iPhone Upgrade Coming This Week But These Devices Will Miss Out

Sunday June 9, 2024 1:25 pm PDT by
Apple is planning a major AI overhaul in iOS 18, with a feature set it is referring to as "Apple Intelligence." However, these new features will not work on older iPhones, even if they do appear on the new operating system's device compatibility list. Apple's initial AI roadmap for iOS 18 is said to come in two parts: Basic AI features that will be processed on-device, and more advanced...

Top Rated Comments

Moonjumper Avatar
147 months ago
Why make it retina required when they still sell products without retina like ohhhhh lets say the iPad mini.......

Because they do sell retina devices. It is not excluding non-retina devices, it is just making sure that all the retina devices are supported in all new apps or updates.
Score: 17 Votes (Like | Disagree)
boshii Avatar
147 months ago
Why make it retina required when they still sell products without retina like ohhhhh lets say the iPad mini.......

Not sure if serious.
Score: 16 Votes (Like | Disagree)
japanime Avatar
147 months ago
Privacy trumps convenience, which is a good thing. Glad to see Apple implement this policy, even if it means a change in how developers approach their apps.
Score: 9 Votes (Like | Disagree)
ccmovies Avatar
147 months ago
Why make it retina required when they still sell products without retina like ohhhhh lets say the iPad mini.......

Or even iPad 2.
Score: 6 Votes (Like | Disagree)
SoGood Avatar
147 months ago
Good move Apple!
Score: 6 Votes (Like | Disagree)
bbeagle Avatar
147 months ago
Oh wow. That's REALLY going to piss off some developers - having to update their app for iPhone 5 even if they're just making a tiny update to the app.

You have this all backwards.

Apple wants to improve the quality of the apps in the app store. Developers should want their apps to be the best they can possibly be as well. As an app purchaser, you should be Happy with better quality.

Lazy developers should go code for Android.
Score: 5 Votes (Like | Disagree)