Brief
Samsung Galaxy S27 Pro and Ultra may debut DC dimming
A rumor claims the Galaxy S27 Pro and Ultra will be the first Samsung phones with DC dimming, alongside other display upgrades.
By Felo News Desk · Published
According to a report on GSM Arena, a new leak indicates that Samsung's upcoming Galaxy S27 Pro and Galaxy S27 Ultra may be the first devices in the company's lineup to offer DC dimming technology.
What happened
The rumor, which surfaced on 10 October 2026, claims that the S27 Pro and Ultra will incorporate DC dimming, possibly in a hybrid mode that still uses PWM at lower brightness levels. The same source notes that the regular S27 and S27 Plus are expected to use Samsung's M14+ OLED material, while the Pro and Ultra will receive the newer M16 formula.
What the reports add
The article explains that DC dimming adjusts the voltage supplied to the display backlight, eliminating the flicker associated with traditional pulse‑width modulation (PWM). It contrasts this with the Galaxy S26 Ultra, which still relies on PWM. The piece also mentions that a hybrid approach—DC at medium to high brightness and PWM at low brightness—has been used by other manufacturers, such as Xiaomi.
What was said
The GSM Arena piece does not quote any Samsung officials; it merely presents the leak and provides technical context about PWM and DC dimming.
How it came about
Earlier this month, Felo News reported on the S27 Pro's design and features, including its smaller size and privacy display technology. The current rumor builds on that coverage by suggesting a new display dimming method could accompany those features.
Key facts
- A leak suggests the Galaxy S27 Pro and Ultra will feature DC dimming. (gsmarena.com)
- The Pro and Ultra models are expected to use Samsung's M16 OLED material. (gsmarena.com)
- The regular S27 and S27 Plus are slated to use M14+ OLED material. (gsmarena.com)
- DC dimming adjusts voltage to the backlight, avoiding PWM flicker. (gsmarena.com)
- The Galaxy S26 Ultra still relies on traditional PWM for brightness control. (gsmarena.com)
Sources
- [1] gsmarena.com — originally reported as “Samsung Galaxy S27 might finally introduce DC dimming”
