After seven years, the Vivo S1 is getting a successor. With an unusual design, a 7,050 mAh battery, and a 3,000-nit AMOLED display, the Vivo S2 aims to set itself apart from the competition’s mid-range smartphones. 4 Reviews ← exclude selected types ← exclude selected tagsThe Vivo S2 defies the current trend toward flat displays, bezels, and backs, as Vivo rounds both the display and the back toward the left and right sides, resulting in an exceptionally thin bezel. The pill-shaped camera module is somewhat reminiscent of the Apple iPhone Air ($769 on Amazon) and houses a 50-megapixel main camera and a useless 2-megapixel sensor. The fingerprint sensor is invisibly integrated into the display.