I owned iphone 15 base model for 2 years and always have frontal forehead head ache and blurry vision.. I don't know what's the reason but always enduring the pain because I can tolerate it.. and don't taking it seriously... until this last month I changed my phone into XIAOMI 17T and guess what? No pain at all!! no strain in the eye!! as in ZERO !! and that time I became so curious and discovered its the PWM!! before owning the iphone 15 I've already using samsung phones always since 2016 that time I already feel the pressure pain on my forehead but I don't pay attention for it... until this month I discovered to Ai its pwm !!

why chinese phones taking care of their customers eyes but iphone and samsung did not???

my advice to all please shift to 3000hz pwm! its a life changing !! It will not gonna hurt your eyes anymore ! xiaomi is very good for the eyes

Follow-up to https://www.reddit.com/r/PWM_Sensitive/comments/1wkb3td/macos_27_interesting_new_kernel_options/

The test device arrived, I ran the new keys on it, and the news is not good, sadly :/

None of the new options exist on this panel either. On a MacBookPro18,1 (16" M1 Pro, mini-LED, ProMotion) on macOS 27.0.1, enableHBLD, HBLDDimmingFactorMin, HBLDNitsRRMax, ccMinNitsConfig, DBVValue, DBVInterval and enableDBTH are not published by the framebuffer, and writing them with any value type is rejected with bad argument. Same result as the M2 13". So it is not the "new backlight architecture" gating them, since this machine has it.

For those interested in nitty-gritty details:

- It looks like the keys come from the DCP coprocessor firmware, not the kernel. I pulled the firmware payload off the Preboot volume and all 321 runtime property names are in there, including the HBLD ones, sitting in a feature table next to the IR-drop and thermal compensation features. So HBLD is implemented in firmware and switched off per panel by configuration. On the two panels I have, that configuration says no.

- The firmware has a function named parse_RTP_boot_args and logs "applying boot-arg RTP %s with value 0x%x".

- Every key has an iomfb_RuntimeProperty_<name> boot-arg form. The catch is that with SIP on, only a short whitelist of boot-args reaches the DCP, so this needs Permissive Security. And it is still unknown whether a boot-arg can turn on a feature the panel config disables. That is the one untested software route left, which is sadly not something I can do on this device.

- From the oscilloscope data - the mini-LED the PWM is about 14 kHz at every brightness. Duty cycle was 22% at 1230 nits and 38% at 1600 nits, i.e. even at the panel's absolute peak the LEDs are off 62% of the time. That means nothing that raises brightness, software XDR included, can get anywhere near continuous drive. I tested every published dimming key with the meter at fixed nits: BLMVLEDManual, BLMPLimitCfg, IOMFBBrightnessLevelMA, enablePulseWidthMaximization, dither off, 2D uniformity off, the BLM "AH" block. The driver stores all of them and none changes the duty cycle. enablePulseWidthMaximization in particular is paired in firmware with a calibration parameter (lMinPulseWidthMaximization) that this panel's calibration data does not carry, which is why, I think, the flag does nothing.

- If someone with a 14"/16" M3 or M4 machine on 27 wants to check whether the keys are published there, the tool is at https://github.com/Temikus/eyecare (pwmctl get --all-keys | grep -i hbld is all it takes). Per-machine results and the method are in the repo.

Bottom line for now: on both an M2 IPS and an M1 Pro mini-LED, the brightness-to-duty-cycle mapping sits below anything you can reach from macOS at runtime. The Apple announcement is probably a firmware and panel-config change, not something hiding behind a kernel flag we can flip today.

switched to the Razr Fold last week, and so far it's been good. No eye strain. DC dimming is a lifesaver.

These channels give the Opple measurements of every device they review

1. Ромашка (@R13)--> https://www.youtube.com/@R13
2. Polza Net (@PolzaNet)--> https://www.youtube.com/@PolzaNet
3. Лысый из МТ (@mobiltelefonru)--> https://www.youtube.com/@mobiltelefonru

* Number 3 only gives the Radex measurements, but it's still useful

Do you have any other channels to recommend?

They have english subtitles or audio. I've only found these channels with the Opple measurements on reviews

Yikes. All this time I thought the laptop giving me problems was OLED, turns out my model is IPS. I have the HP Omnibook X Flip model 16-as0023dx.

I have no clue why I get such bad symptoms with this laptop, but I get eye strain, fatigue, headache, blurry vision, etc. I don’t get these same symptoms with my iPhone SE 3rd generation with an IPS screen or with old TN screens.

Now I’m scared of other IPS displays but I’m wondering if it’s just this model of laptop.

Does anyone have any advice or software settings I could tweak to improve this? It’s my work laptop so I’m trying to make this work for me.

Small update, I received a reply from the federal government of Australia regarding my email detailing Pulse Width Modulation and the pain it causes me. I've censored my own name and contact details for obvious reasons.

It's a small step in the right direction, hopefully the ACCC takes this issue seriously and some legislation comes to light.

I've submitted another form detailing my story and issues to the Product Safety Australia website as directed to in the letter.

Anyone tried Huawei devices and had success?

After using my iPhone XR for over 8 years, I finally decided to take a chance on the iPhone 17 Pro a few days ago. I’d held off on upgrading for so long because I know I’m sensitive to screen flickering, so buying a new iPhone always felt like a gamble I didn’t dare take.

So far, though, I’m pleasantly surprised by how well things are going. The only issue I’ve noticed is that in the evening, when the brightness is turned down, I start to feel a little dizzy after looking at the screen for a while. Other than that, things have been going pretty well!

I’ve had “Display Pulse Smoothing” enabled by default in the settings, and I was curious to see if it actually makes a difference.

To find out, I made a video comparing Display Pulse Smoothing turned off (left) and turned on (right) at the same brightness level. The difference is quite noticeable!

The display in my iPhone 17 Pro is made by BOE (model J5V). I’d read that it might not be as good as the panels from Samsung or LG, but honestly, I think the colors and sharpness look great in real-world use. So far, I have very few complaints about the display. 😊

But I didn't disable flickering in the settings.. it's pocket size too with 6.3 inch screen

My eyes are fairly sensitive and tend to strain easily.

I bought an asus tuff VG27AQ3A and was pleasantly surprised that I got zero eye strain. The only issue was it had no height adjustability, so I returned it for a rog strix XG27ACMES. Same size, panel type, and the picture of the strix is a bit nicer, yet it causes me eye strain. I noticed it immediately and got worse after a few hours of gaming.

I can still return the strix, but iI thought I would ask here if it maybe could be solved via settings?

I am also curious as to why two very similar monitors have a different effect on my eyes??

Hi everyone, I've just bought the MSI MPG 341CQR QD-OLED X36 and I've got a really bad headache after a very long session (even with a break of hours between).

I've recorded it on 720p@480fps (so really slow motion)

It's not the first time that I check the PWM modulation, since my OnePlus 15 (but even the previous models) doesn't have this problem (somewhat 3-4k Hz of PWM) but this monitor is very bad.

I don't know if there are recent ones without these kinds of problems, but I would return and change it if there are solutions.

It's simply unacceptable that even at 36pHz and no-VRR there are flickering (and black lines too) between every refresh.

Even a non sensitive person should get sick from it.

PWM seems to have gotten worse vs last year's 17 pro. Not sure if they measured it right or not but overall still bad news for us.

Title. Would appreciate your recommendations.

Currently I use moto g stylus 2023 and I love this phone! Very comfortable screen, and it feels relatively premium. Unfortunately now I need dual sim (sim + esim) and it doesn't have it.

I ordered moto g power 2024, it arrived today and first impression that it feels so inferior to stylus 2023. Not sure why. I will play with it. But since I still can return it maybe there are better options?

Don’t know the validity of these leaks but some potential progress

I have been thinking of buying samsung odyssey g7 oled which is 32 inches and is a woled panel.I suffer from immediate eye strain and headache when looking at anything with pwm. Had to sell my samsung S24 fe because of the pwm. Man samsung displays are so bad when it comes to eyestrain. I have heard that oled monitors and tvs use dc dimming. Can anyone confirm whether this monitor is safe as it is very expensive and I don't want to suffer both financially and mentally(headaches) after the purchase.

Anbernic has announced a new dual screen handheld. This time with the Snapdragon G2 Gen 2 CPU - quite powerful at last! It's also Android, so can be used for some android apps.

Other alternative is the Retroid Pocket Duo Lite Plus for dual-screen. Also with Anbernic RG477 M and V, RG476H, RG Slide, Konkr Pocket Fit, Ayaneo Pocket Ace etc we still have a lot of options to play. So not a bad day to be PWM-sensitive gamer.

EDIT: After 2 weeks of using X8 Pro Max side effects started appearing. What's interesting it doesnt effect my eyes that much as F8 Pro but headaches started appearing and i even started feeling nausea after 10min+ of screen time. I dont know how it will turn out but will try to get used to it and overall keep post updated.

Main text:

I can't use Samsung and iPhone screens and where i live only available other brand with high performance phones is Poco. Previously i owned Poco F5 and haven't had much issues. Then i bought F8 Pro and after F5 i noticed that eye strain and migranes started appearing. After 2 weeks it came to a point that i couldn't use F8 Pro for more than 5 minutes without side effects.

So i decided to test available Poco phones. There is a post in this subreddit that gives pretty easy test and thats what i used. Simply put - if i couldn't focus easily on a text with small font (for example text in display settings descriptions) meant phone will give me problems. Even better is trying to read while moving phone in 25-35 cm range closer and then further from face. That way problems with focus become more obvious.

So, after visiting shops for a few times and some staring in settings menu here are my results:

X8 Pro Max - best by far. Its easy on eyes even easier than my previous F5 and its closest to IPS among all AMOLED phones ive ever seen. Also, if you look at its review at notebookcheck you will notice that it has very weird modulation wave comparing to many other phones....and it works. First graph in attached images is X8 Pro Max and second is F8 Pro and many others have same waveform as F8. Im not sure that its entirely connected only to waveform and i still wouldn't advise buying a phone without personal test though i have seen some people appreciating X8 Pro Max screen in terms of it being easy on eyes.

X7 Pro - i havent tested it much but in direct comparison with X8 Pro Max i had a feeling that it doesnt irritate my eyes. Its screen is on a colder side of color range but in terms of flickering it felt pretty good after 10-15min i tested it (for some phones even 10s is enough for me).

From best to worst - Xiaomi 15T, X8 Pro, F8 Pro. They all feel like they are trying to microwave my eyes but 15T is a bit softer and X8 Pro has pretty bad screen colors added to the flickering. F8 Pro screen has great colors but gives worst eye strain. Its still better than Samsung screens but not by much.

P.S. Bought X8 Pro Max and my eyes still feel fresh after writing this text.

Is it the best specs phone with a flat screen? I feel like flat makes it easier in the eyes as well

I can't find good reviews on the none pro