[7][8] The Z Fold 4's outer display and back panel use Gorilla Glass Victus+, whilst the foldable inner display is made of Samsung's proprietary "Ultra-Thin Glass" with two protective PET plastic layers covering it, the top of which is a replaceable screen protector.

The Samsung Galaxy Z Fold 4 is available in four colors: Phantom Black, Beige, Graygreen and Burgundy.

[9] The Galaxy Z Fold 4 has two screens: its 6.2-inch external cover display and its foldable 7.6-inch inner display featuring support for the S Pen Pro and the S Pen Fold Edition, with both running at 120 Hz and including support for variable refresh rate to help maximize power efficiency.

Compared to the prior generation Z Fold 3, the inner display now has a slightly more square aspect ratio (~6:5 vs ~5:4) due to the external cover display being made moderately wider by about +3 mm; along with both it and the actual phone itself being made ever so slightly shorter.

Both of these changes end up combining for a notably wider and thus closer to "traditional phone shaped" ~23.1:9 aspect ratio on the external cover display when it's folded as compared to the Fold 3's notably narrower ~24.5:9.