DC dimming is gradually gaining popularity in the smartphone industry especially as there is a shift to AMOLED displays. Always striving to be at the forefront of emerging trends, Xiaomi earlier disclosed that it would implement DC dimming on the Mi 9 before May 1. The company has kept to its promise as the Mi 9 has gotten an update that ushers DC dimming on the device. 
Zhang Guoquan, director of Xiaomi’s mobile phone system software department announced the new DC dimming on the Mi 9 Development version only. He hinted that the stable version will become available on other MIUI versions after May 1, all things being equal. The DC dimming mode will be turned on under low brightness. He also disclosed that the new DC dimming feature would be included on all its OLED display-packing phones. Xiaomi’s hasn’t got a whole lot of them, just the Mi 9, Mi Mix 3, Redmi Pro, Mi 8 Pro and a few more. So the rollout may not get delayed for too long. 
Related: What is DC Dimming & Why it’s Important for AMOLED Smartphones?
With the rise of LED technology, DC dimming control has been gaining a lot of attention as a more effective way of controlling the light output of an LED fixture. The technology uses a DC voltage between 0 and 10 to control the light output of the LED fixture. As the voltage goes up or down, the corresponding 0-10V dimmable driver matches the light output of the fixture to increase or decrease up to a certain percentage. DC dimming is one of the simplest and most popular dynamic lighting controls used in offices, retail spaces, and homes but the feature is just gaining traction in smartphones. Apart from the Mi 9, OPPO’s latest Reno also comes with DC dimming. However, we must point out that those of the Mi 9 and Reno are not hardware DC dimming but a software pattern to reduce the low-brightness strobe. Xiaomi is reportedly still developing a new pure hardware DC dimming. In the future, Xiaomi Mi 9 will also switch to this new solution, which will bring users no visual fatigue at low brightness.
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