In the unfolded state, the Huawei Mate X body is only 5.4mm thick on one side. In the folded state, the body thickness is only 11mm, which still maintains a good grip. The key is that a 4500mAh battery is inserted into such a body. Royole released a folding screen mobile phone last year, with an unfolded thickness of 7.6mm. There is no folding parameter on the official website. Judging from the folded appearance, it should be at least 15.2mm. By the way, the battery of Royole’s foldable phone is 3970mAh. For Samsung’s folding screen phone, there are no parameters related to thickness.