World’s Best Smartphone Camera Sensor in Leica-Branded Xiaomi 12S Ultra Xiaomi has announced its 12S Series, including the Ultra co-engineered with Leica. That flagship features the world’s largest smartphone sensor: a 50-megapixel 1-inch sensor behind a 23mm f/1.9 Leica lens. The Xiaomi 12S Ultra features a 6.73-inch AMOLED display that promises 1,500 nits of peak …