The Samsung Galaxy S27 Pro and S27 Ultra are expected to be the first Samsung phones to offer DC dimming, according to a leak reported by Victor on 10 October 2026. The claim arrives alongside reports that Samsung Display is gearing up to start Galaxy S27 display manufacturing soon.
The leak frames the DC dimming addition as conditional: the implementation may be hybrid, with DC dimming applied at medium and high brightness and traditional pulse width modulation used at very low brightness levels. That latter point matters because the Galaxy S26 Ultra continues to rely on PWM for brightness control.
Pulse width modulation works by rapidly toggling the light source on and off to produce different perceived brightness levels. DC dimming instead adjusts the voltage supplied to the light source to avoid perceptible flicker. The technology is harder to integrate on panels that also support features such as variable refresh rates and low-temperature polycrystalline oxide backplanes, so many makers combine both approaches.
Display materials, Privacy Display and color depth
According to the same sources, Samsung will split display hardware across the S27 line: the S27 Pro and S27 Ultra will use Samsung's latest M16 OLED material formula, while the regular S27 and S27 Plus will ship with M14+. The Privacy Display feature introduced on the Galaxy S26 Ultra is reported to remain available on the S27 Pro and S27 Ultra.
The report also notes Samsung has not announced proper hardware 10-bit color support for the S27 family, while some competitors have already moved to 12-bit pipelines. The leak points out that Apple iPhones do not use DC dimming either and instead offer a "smooth PWM" mode in settings.
These details come from early leaks and the company’s reported manufacturing preparations; they are not official confirmations from Samsung.
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