Formats supported in RetailBox

Requirements

4K and HDR playback for supported content requires:

• RetailBox 5 and later.

• You will also need iOS 13 and later or iPadOS to play compatible content.

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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.

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Devices that support 4K playback:

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• 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) 

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.

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Devices that support HDR playback:

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• iPhone X, iPhone Xs, and iPhone 11 Pro

• iPad Pro (11-inch) (all models)

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