What has anyone heard and seen regarding the early hands on videos with the iPhone 14? Have yet to see a reviewer mention it, was hoping MQB would. Saw a bit about how Huawei boasting that they have upped the PWM frequency to 2000+hrz with a BOE screen. Any potential for this to make it to iPhone, given they (still I believe, after the cheating) are supplying Apple with displays for iPhone 14? Huawei article: https://www.huaweicentral.com/huawei-mate-50-devices-to-equip-ltpo-1-120hz-refres-rate/amp/

MTNEYE Saw a bit about how Huawei boasting that they have upped the PWM frequency to 2000+hrz with a BOE screen I wrote about that here and it seems things may be different than as advertised.

The Mate 50 Series uses a OLED display with 1440 Hz PWM Frequency. Sadly there is currently not one clue of a better PWM implemention on the new 14 Pro and Max. BOE should only supplie a small part of the displays for iPhone 14. So i don`t think that the iPhone 14 could have a PWM Frequency above 1000 Hz.

I've preorder the iPhone 14 pro, so il will give you a feedback in 10 days! Now i am using the iPhone X with iOS 14 with zero issue.

I should be receiving the 14 Pro this Friday (16th) and have the Opple lightmaster so I should be able to a) tell you if it works for me and b) get some readings.

RulerofNothing The Mate 50 Series uses a OLED display with 1440 Hz PWM Frequency The Poco F4 GT was also claiming to use a "1920Hz PWM frequency" but as I wrote here , the situation seems to be different, and its unclear what they're even referring to.

JTL are you talking about the F4? ThePoco X4 GT is supposed to be an IPS LCD display

francerex Yes, pardon me for listing the wrong model by mistake.

JTL I just ordered the X4 GT, should get it wednesday, and you got me scared for a moment 😃

Lauda89 awesome! looking forward to it! I was thinking of getting 14 pro (not max)

markdotpeters5 YES that would be great, some actual readings! I have trouble with the 12mini/XS max at everything but 100% brightness, had a 13 mini that had trouble even at 100% brightness (still PWM dims at the level)

iPhone 14 & 14 Pro PWM Megathread

markdotpeters5

Lauda89 Same 🙁 Sticking with the Mi11 for now.

drima55

markdotpeters5 Do you have no eye strain with Mi 11 Ultra?

Lauda89

drima55

They are two totally different panels though! The iphone X has a fixed PWM at 240hz and a less bright screen with a fixed frequency at 60 hz. This one has 2000nits of maximum brightness, a refresh rate ranging from 1 to 120 hz, and a PWM that looks dynamic.

Then consider that there is also different software, ios 14 vs. 16!

markdotpeters5 I will return with the iPhone X for another year, then I will try again with the iPhone 15 next year 🙂

markdotpeters5

drima55 None at all. it has DC dimming.

markdotpeters5

drima55 ooh, sorry realised I mis-read your question. I've never tried the Mi11 ultra, I have the Mi 11.

lukegilmour

Lauda89

Had an iphone 12, had to return it because it was impossible to use. big headaches and eye strain no matter how much i tweaked the settings.

heard the 13pro improved this a bit and maybe the 14 could work?

im using an 11 now with no issues.

qb74

blokes444 Great to see that Apple is somewhat moving the PWM frequency up compared to other manifacturers which are stuck at 480-240 (still way too low, easily spottable)

With how it's progressing, maybe the iPhone 17 might have an OLED that has decent PWM handling 😃

(hopefully other manifacturers won't follow this trend… lol)

MTNEYE

markdotpeters5 Thank you so much for this, saved me a whole order return hassle!

Keye21

Lauda89 Im So glad you have mentioned the brain fog! This is one of the main symptoms for me. I have not heard anyone else speak about it. But If I try and keep the phone it gets worse over time.

Keye21

drima55 Well I assumed the same. But all the phones since the X have given me migraines, vertigo, brain fog etc.. ive tried X, Xs, 11, 12 pro, 12 pro max.. and returned them all (several times, from several attempts) but the 13 pro max was fine, it didnt give me a headache once in a space of a month using it every day as main device. (I did return due to brain fog) and that has a low refresh similar to the XS max which was awful for me.

So last week I tried the 13 pro and within a few minutes, I felt a dizzy, went home and had a headache. so frustrating. Ive felt rubbish since. The pro max's effect me less but the small ones with a higher refresh give me the worst headaches. So I think it just varies for everyone. Currently using an iPhone 8 plus lol.. I was hoping the 14 pro max with the LTPO screen would be better but n thinking other wise. 🙁

tsb

Have you people tried the "Reduce white point" option? (Simply search in settings for white point)

I got a 13 pro max instead of the 14, so maybe this option is working differently, but for me it helped greatly.

By default it sets to 80%, I was raising it to 90% and cranked brightness itself simply higher and now I'm all good.

This is maybe not related to PWM, but who knows, maybe it helps for that as well. I just hope this can help someone out there too!

Deepdeep

tsb This is imo quite likely related to PWM coz when the brightness is set very high or at max on a phone with PWM the "OFF" part of the PWM cycle is much shorter than the "ON" part and this reduces the effect the PWM flicker has on us (even if the flicker isn't completely eliminated). So keeping the brightness slider very high or on max and then using the "reduce white point" accessibility setting to reduce the brightness to a comfortable level as you have done can help if we are sensitive to PWM flicker.

Some phones (like the 13 Pro Max according to notebookcheck I think) use PWM all the way up to 100% brightness but others have it only up to a lower value eg 62% or 99%. In phones that have it upto 100% it's most effective if you keep the brightness at 100% but on phones that have it only up to a lower point then it's ok to keep it just above that percentage, and then in both cases reduce the brightness using "reduce white point" on iPhones or iPads, or using overlay software like Twilight, for example, on Android.

blokes444

tsb reducing white point made it worse for me, left it as is and at about 85% brightness

drima55

blokes444 is that true about 1040 PWM on IPhone 14? I cant understand how these values were obtained

drima55

blokes444 if that`s really true my next phone is iphone 14

Sam9999

Got my 14 Pro Max device delivered today. Unfortunately for me, the 14 Pro Max didn’t work out as the case was with 12 & 13 Pro max. After around 30-45 mins of usage, terrible eye strain, nausea & blurred vision. PWM all the way up to 100% brightness level it seems… So Regardless of PWM frequency bump for the 14 Pro’s , the issue still persists imo. Maybe different for others.

Right now SE3 and 8 plus are holding the fort for me. Great LCD displays, of course without PWM, resulting in no issues for the eyes whatsoever. Doesn’t matter how many hours you clock daily on these LCD display devices.

Tomorrow I will do another test with 14 PRo Max so as to be really sure and if it turns out to be same experience as of today, then I will return the device on Monday with a heavy heart (again like last 2 years in a row). Will update here the findings. I would suggest that please test yourself if you get a good return policy in place.

KM

It's always worth a try, but the assumption that if one suffers from 240 Hz PWM, 1040 Hz PWM might somehow mitigate the problem may be wrong. The whole idea that there is a nearby threshold at which flicker would suddenly have no effects at all anymore may be wrong. I myself notice symptoms at 20,000 Hz, too. Don't let this discourage you from testing, but keep it in mind if you still have symptoms with 1040 Hz or higher.

blokes444

iPhone 14 worked for me, no eye strain or headache. The hz is higher than the 13 is my assumption. Won’t know until notebookcheck releases the data, was told 1080hz is wrong on the 14, my eyes says different lol

francerex

blokes444 I might try it I think, another guy on macrumors was also able to use it

it seems that it has a constant refresh rate at 60hz and that makes it much better than the 14 pro

Apple iPhone 14 smartphone review - Small upgrades for the Apple phone - NotebookCheck.net Reviews

Vaggbaba

markdotpeters5 mi 11 and mi 11 ultra have same display E4 Samsumg

Lauda89

Ok, I give up! I tried the 14P for 2 days and today I feel really really bad!
It doesn't cause me any eye strain but i am totally disoriented as if I had a fever!

NewDwarf

Lauda89 Hmm… interesting feeling. Maybe iPhone 14/Pro devices began using temporal dithering?

From my experience, PWM and temporal dithering give different feelings.

Keye21

Lauda89 can I ask was it worse than your experience with the 13 pro max?? I’m trying to work out if it’s even worth me trying.

Did the 13 leave you as disoriented as the 14?

Lauda89

Keye21 I never tried the iPhone 13.. Because the iPhone X was an amazing phone, I can use it for 4+ hours per day with zero issues! So I've never tried to change the phone during the last 4/5 years!

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