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Definition: Huawei Mate XT
A tri-fold smartphone from Huawei. The Mate XT weighs 11 ounces and unfolds to a 10-inch screen. Running Huawei's HarmonyOS, up to 1TB of storage is available. Released in September 2025, the Mate XT supports the BeiDou Navigation satellite system (BDS), which allows texting without cellular or Wi-Fi access. Stereo speakers are built in. See BeiDou and foldable phone
The Mate XT TriFold
While dual-panel foldable phones from Samsung have been around since 2019, the Mate XT is the first trifold smartphone on the market. (Image courtesy of Huawei Corporation.)