With foldable phones attracting all the attention recently, ZTE is keen to be a part of what is possibly the next big thing. The company filed in a patent for a phone that folds vertically similarly to Motorolla's alleged 2019 RAZR. More interestingly, the patent shows that the device will fold inwards, but not in the middle as the upper half of the flexible screen appears shorter. There is no physical cutout for a selfie camera so it remains to be seen how the company plans to implement that feature. There are two buttons on the right side, presumably for volume and power controls as...