These devices support 4K HDR playback with supported content with the RetailBox app

Find out which formats are supported in RetailBox app


4K and HDR support for compatible content requires RetailBox 5.0 and later. You will also need iOS 13 and later or iPadOS to play compatible content.



4K plays at a higher resolution. HD videos support a resolution of 1920 x 1080, but the resolution of 4K videos is 3840 x 2160, which offers sharper and more detailed imagery.

These devices support 4K playback with the RetailBox app:

  • iPhone X, iPhone Xs, iPhone 11 Pro, and iPhone 12 Pro

  • iPhone 12 mini and iPhone 12

  • iPad Pro (11-inch) (all models)

  • iPad Pro (12.9-inch) (3rd generation) and later

  • iPad Air (4th generation)

  • iPad Pro (10.5-inch) 


High Dynamic Range (HDR) delivers brighter, more realistic colours and luminance with greater detail. Most videos which support HDR also support 4K and is best enjoyed on iPhone X and later with the Super Retina display.

These devices support HDR playback with the RetailBox app:

  • iPhone X, iPhone Xs, and iPhone 11 Pro

  • iPad Pro (11-inch) (all models)

  • iPad Pro (12.9-inch) (3rd generation) and later


iPhone 8, iPhone 8 Plus, iPhone SE (2nd generation), iPhone Xʀ and iPhone 11 will support HDR playback in a future software release.

Getting the best playback

The RetailBox app will intelligently download the best available resolution as soon as you download new screen savers. You can check which screen savers support 4K HDR with format icons, which display in the upper right corner of screen saver tiles in the Featured tab.

Playing audio from other apps whilst playing screen savers

With RetailBox 5.4 and later, you can play audio from supported apps like Apple Music and Spotify while playing screen savers. 

Last Updated: October 24, 2020

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