Huawei's Mate Xs will be a foldable smartphone that will be an upgrade to the Mate X. It will likely sport the exact same form factor and display (8" 2200x2480 foldable AMOLED display that folds outwards, produced by BOE) but with a stronger chipset (Kiri 990 SoC) and maybe other improved features.

Huawei Mate Xs launch photo

Huawei announced that the Mate Xs will ship in China in Q1 2020.

OLED type: 

8" 2200x2480 foldable AMOLED

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Cambridge Isotope Laboratories - Deutreated Reagents and High-Purity Gases for OLEDsCambridge Isotope Laboratories - Deutreated Reagents and High-Purity Gases for OLEDs