MediaTek has unveiled the Dimensity 8400, the first upper-midrange Android chipset with an all big core CPU.Redmi Turbo 4 will be the first phone to be powered by the new SoC, with a launch expected in early January 2025.The device will use the Dimensity 8400-Ultra platform and may be rebranded internationally as Poco F7 or Poco X7 Pro.The Dimensity 8400 is expected to challenge the Snapdragon 7+ Gen 3 as the king of the upper-midrange segment.