The Huawei Mate X3 is a truly impressive piece if engineering. Huawei managed to craft an amazing device on a number of levels. First and foremost, the X3 is thin and light. It weights just 239g (the Feathered Sand model is 241g), which is 24g less than the Galaxy Z Fold4. When unfolded, the Mate X3 also measures just 5.3mm in thickness. All the while, the Mate X3 still packs a large 4,800 mAh battery.