Play content in 4K HDR
Formats supported in RetailBox
Requirements
4K and HDR playback for supported content requires:
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RetailBox 5 and later.
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You will also need iOS 13 and later or iPadOS to play compatible content.
Format labels display in Featured for screen savers which support 4K HDR. You can also enable Download Indicators in Settings > Data Usage to quickly determine if screen savers have been downloaded, indicated by a tick in the bottom right corner of screen saver tiles.
Overview
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. 4K is available on many popular screen savers.
Devices that support 4K playback:
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iPhone X, iPhone Xs, iPhone 11 Pro, and iPhone 12 Pro
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iPhone 12 mini and iPhone 12
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iPad Pro (11-inch) (all models)
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iPad Pro (12.9-inch) (3rd generation) and later
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iPad Air (4th generation)
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iPad Pro (10.5-inch)
4K
HDR
Overview
High Dynamic Range (HDR) delivers brighter, more realistic colours and luminance with greater detail. Most videos which support HDR also support 4K and are best enjoyed on iPhone X and later with the Super Retina display.
Devices that support HDR playback:
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iPhone X, iPhone Xs, and iPhone 11 Pro
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iPad Pro (11-inch) (all models)
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iPad Pro (12.9-inch) (3rd generation) and later