OnePlus 12’s brightness: PWM and DC dimming!


Have you ever been outside on a sunny day, trying to check your phone, but you can’t see anything because the screen is too dim? OnePlus 12 tackles these kind of problems head-on.

Key Takeaways

  1. Unprecedented Brightness: OnePlus 12 boasts a peak brightness of 4,500 nits, outshining competitors and ensuring clear visibility even in sunlight.
  2. PWM and DC Dimming: The device combines Pulse Width Modulation (PWM) for high refresh rates and DC dimming for smoother brightness adjustments, catering to user comfort and eye health.
  3. Problems: Although, OnePlus 12 has pretty good brightness management systems, It becomes wonky sometimes and dims the brightness when not needed to or vice versa.

Unprecedented Brightness Levels

So, picture this: you’re out in the sun, and you whip out your phone. But wait, you can actually see the screen! That’s because the OnePlus 12 boasts a whopping peak brightness of 4,500 nits.

Now, what’s a nit? It’s just a fancy way of measuring brightness. And trust me, 4,500 nits is like having a mini-sun in your hand. It’s a big jump from other fancy phones like the Google Pixel 8 Pro, which clocks in at 2,400 nits, or even Apple’s claim of up to 2,000 nits.

In fact, the OnePlus 12’s display is so bright, it’s like breaking records in the world of smartphones.

What is peak brightness? Is it different than HBM?

Pulse Width Modulation (PWM)

Now, what’s PWM? Pulse Width Modulation (PWM) is a method used to control the power delivered to electronic devices, like LEDs or motors.

Imagine you’re turning a light on and off really quickly. By changing how long the light stays on compared to how long it’s off, you can adjust its brightness. That’s PWM!

For example, if the light is on for a longer time than it’s off, it will appear brighter. If it’s off for longer, it will seem dimmer. This rapid switching happens so fast that to our eyes, it looks like the light is continuously on, but it’s actually flickering on and off. This method is calld “Ultra Anti-Flicker” in OnePlus 12.

Pulse width modulation graph

But, some people have sensitive eyes and can catch this flickering. This can cause uncomfortable eyes or headache. To compensate with this, OnePlus 12 uses a very high refresh rate of 720Hz which is less noticable.

So, why does this matter? Well, it’s all about keeping your eyes happy.

DC dimming

Now, Regardless of the frequency, PWM method is still not the best for sensitive eyes. That’s why OnePlus has got another trick up their sleeve called DC-like dimming.

DC dimming is actually a tried-and-true method that’s been around the block in the smartphone world. This method was used mostly in LCD screens. It’s like the old faithful of brightness control.

Instead of flickering like crazy, it smoothly adjusts the brightness controlling the amount of current supplied to the display. The more the current, the brighter the display.

And here’s why it matters: DC dimming is super easy on the eyes. It helps you avoid side effects like headaches, eye strain, and even feeling queasy or dizzy from all that flickering.

More about DC dimming and PWM at GizmoChina

How to enable DC dimming in OnePlus 12?

This method does not come automatically applied in the OnePlus 12. The default method it uses is PWM method. However, you can enable it by following these intructions.

  1. Open System Settings by tapping the Settings icon.
  2. Select Display & Brightness from the list of settings.
  3. Select Eye comfort & Sleep from the list.
  4. Disable “Ultra Anti-Flicker”.

But here’s the catch: if you decide to dial down the brightness below 25%, the OnePlus 12 switches back to its speedy 2,160Hz PWM dimming, no questions asked. It’s like flipping a switch from smooth sailing to turbo mode.

So, while OnePlus has made it super easy to enjoy the benefits of DC dimming, just keep in mind that it’s all about finding the right balance between eye comfort and screen brightness.

Problem with Auto-Brightness

Uh-oh, looks like we’ve stumbled upon a potential hiccup in the brightness game: the ambient light sensor.

So, here’s the deal: sometimes, this little sensor can go haywire or get blocked, causing your phone to make wonky brightness adjustments.

What does that mean for you? Well, it could mean that your screen ends up being way too bright when it should be dim, or vice versa.

Imagine stepping outside into the bright sunlight, only to squint at your phone because the screen is as dim as a candle in a cave. Yeah, not ideal either.

The OnePlus 12 can do these wonky adjustments due to others reasons too. This can even cause fast drain of battery if it is going crazy.

How long does OnePlus 12’s battery last? Beats S24 Ultra!


It’s rare that OnePlus 12 will do this, but when it does, we’ve got a solution at hand.

Regardless of what is causing this problem, there is one simple solution. Turn your brightness to manual mode. This is a very simple yet very effective solution.

Now, it might be a bit of a hassle trying to change phone’s brightness whenever you change environment. But it is still a lot better than what we had before.


The OnePlus 12 isn’t just another smartphone—it’s a trailblazer in display technology, setting a new standard for brightness at 4500 nits peak.

By combining both PWM and DC dimming, OnePlus isn’t just showing off its tech prowess—it’s putting user comfort front and center.

Note: Any verdict given by us on any of the companies, or specs of a device is subjective. Our preferences can be different from yours, so be sure to conduct your own research to make a decision that is good for you.

Check out information about OnePlus 12’s display type.

OnePlus 12 has curved display, But, Is it practical?

Frequently Asked Questions (FAQs)

What is HBM (High Brightness Mode) of OnePlus 12?
OnePlus 12 has a peak brightness of 4500 nits. Whereas it has 1600 nits of brightness in High Brightness Mode.
Is OnePlus 12 display color accurate?
OnePlus 12’s display color is pretty accurate. In fact, the color errors of OnePlus 12 are so small that it can even be called true color.
Why is my OnePlus brightness low?
This can be caused by Auto brightness mode which can sometime malfunction. To fix this, you can turn on manual brightness mode and adjust brightness according to your liking.

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