The vivo X300 Ultra is shaping up to be a camera powerhouse, if recent leaks are accurate. Ahead of its expected launch next month, a new rumor has surfaced revealing details about the phone’s external teleconverter kit.Well-known tipster Digital Chat Station has shared new details once again. In a post on Weibo, the leakster claims the upcoming X300 Ultra will feature an industry-first external teleconverter kit with a dual lens setup.vivo X300 Pro teleconverter kitThe teleconverter kit is said to include a 400mm fixed-focus prime lens while also supporting a 200mm focal...