The vivo X100 Ultra will be announced on May 13, the company revealed on Weibo. The event will also see the introduction of two new flagships, X100s and X100s Pro, the first of which will have flat sides and a front panel. The company already listed the phones on its online store in China, revealing the full memory combos and color options. The X100 Ultra has a camera setup that is different from that of any other X100 smartphone. According to a senior executive, the phone, with its flagship-tier camera technologies, will excel in five key scenes: The micro-gimbal anti-shake...