Huawei has launched a new flip phone that upends the form factor, opening sideways rather than vertically to create a wider device with a tablet-esque aspect ratio. It’s the first Huawei phone to ship without Android app compatibility, and debuts the company’s in-house AI assistant, Harmony Intelligence — something the industry shouldn’t ignore, Nvidia’s CEO admits. The Pura X looks similar to a Samsung Galaxy Flip or Motorola Razr when it’s closed, with a palm-sized design and a square cover screen below its triple camera. The giveaway that something’s up is that the hinge is on the phone’s side, not...