Lenovo teases its upcoming smartphone series, challenges the Redmi Note 9

Lenovo posted a few images on Weibo to tease its upcoming smartphone series that will compete with Redmi's freshly announced Note 9 trio. The pictures shared by Lenovo also reveal a few details about the company's upcoming smartphone lineup. For starters, at least one of the smartphones will have a squircle-shaped camera island on the back housing what appears to be three cameras and an LED flash. It will pack a punch-hole display and have the power key placed on the right-side frame. There's another button on the left, which might be a dedicated button to summon the digital...