The Huawei Mate X is an Android-based high end foldable smartphone produced by Huawei. It was unveiled at MWC 2019 on 25 February 2019 and was originally scheduled to launch in June 2019, but the launch was pushed back to allow for extensive testing in light of the failures reported by users of a similar product, the Galaxy Fold from Samsung. The Mate X launched in China only in November 2019. Huawei announced the Mate Xs on 24 February 2020 as a hardware revision of the original Mate X; it was released in "global markets" outside China in March 2020. The device features a more durable display, improved hinge function and a redesigned cooling system, as well as the newer Kirin 990 5G SoC and Android 10 with EMUI 10.

A foldable smartphone is a smartphone with a folding form factor. It is reminiscent of the clamshell design of many earlier feature phones. Some variants of the concept use multiple touchscreen panels on a hinge, while other designs utilise a flexible display. Concepts of such devices date back as early as Nokia's "Morph" concept in 2008, and a concept presented by Samsung Electronics in 2013, while the first commercially available folding smartphones with OLED displays began to emerge in November 2018.