Xiaomi's sub-brand Redmi has already teased several features of its upcoming K20 smartphone, and today, it adds two more to that list - DC Dimming and Game Turbo 2.0. The Redmi K20 will come with an AMOLED display, and these panels are known to flicker at low brightness settings. This happens due to the use of Pulse Width Modulation (PWM) to control the screen brightness. So, to deal with this issue, Redmi will use the DC Dimming method on the K20. Another feature is Game Turbo 2.0. We don't know how much of a performance boost it will offer while gaming on the Redmi K20, but the...