Apps That Have Access to UDIDs, and don’t support 4-inch screens will be rejected starting May 1st.

Jassim ahmedMarch 21, 20137

Today, Apple stated officially that they will start rejecting App Store apps that have access to device UDIDs. This new policy will be implemented starting May 1st. The UDID system will be replaced with the iOS Advertising Identifier, a non-personal identifier that developers can use.

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.

In addition, Apple will not be accepting apps that do not support the iPhone 5 or iPod Touch 5g’s 4-inch Retina Display. This is also an official statement from Apple.

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.