Usable Smartphones?
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qb74 Only usable phones are most LCD phones, end of story.
Unfortunately I still can't find a usable LCD phone lol, I tried:
- Oppo A98 (2023, Android 13, 120hz VRR LCD, I attempted a 120hz FPS-locking workaround as well)
- OnePlus Nord N30 (2023, Android 13, 120hz VRR LCD)
- Xiaomi Mi Mix 2s (2018, Android 10/9/8 tried downgrading to all 3 versions, 60hz LCD)
- iPhone SE (2020, iOS 17.2.1, 60hz LCD)
They all gave me terrible eyestrain, SE was the absolute worst but the Androids were not usable for me either.
I am pretty sensitive to PWM and dithering. I can use the Fairphone 4 pretty comfortably. Perhaps you could try it.
ps: I also finally found a MacBook (the MacBook Pro with TB you recommended) that works for me. Thank you very much for the suggestion!
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You will see a slight dip/wiggle for the refresh rate at the sine wave peak. Your eyes don't care about that. Square and sawtooth, they will.
nice, so you dodge my question where I ask you of concrete proof for your previous claims and try to diagnose my eyestrain concerns instead, good job.
no, what you're saying is complete non-sense and doesn't apply to everyone.
send a screenshot of a oscilloscope wave instead of talking shapes 
i can pull out studies which have shown the ability the human nervous system has in detecting flicker and rf emission.
DisplaysShouldNotBeTVs
Have you tried a older smartphone such as the A23 5G, Nokia 8, Xiaomi MI 10T Pro? Have you played around with color temperature and setting a fixed refresh rate?
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SebbesApa It's a shame that this device isn't available in Brazil the Poco X4 GT, it's too expensive to import. I wanna try this one
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SebbesApa
I'm afraid that this is just the result of incomplete (or improper) testing from most phone reviewers.
There can be multple causes which can contribute to eyestrain, from the hardware stack to the software stack.
The MI 10T Pro uses PWM to control it's brightness below 60% with a frequency of 2358 Hz, which is easily noticable by the human eye.
The maximum brightness level of the device is measured at 600cd/m2, which is quite bright in-doors, contributing to the effect of eyestrain even further
You could've been using the display with PWM on by mistake.
It's also not very good to have VRR (variable refresh rate) turned on, as that can have negative consequences on panel performance (even desktop monitors can flicker, let alone phones which aren't verified enough + have power
& battery life constraints to consider)
All of this could've led to your findings with this device.
For who is interested: I tested 20+ phones, and the Oneplus9 had the least complaints. Since 3/4 year all complaints vanished, just like that. I think because of a software update…
I got a TCL A20S, with Nova Launcher, and Disabling HW Overlays, is useable pain free
TCL A20S? I am not sure this phone exists. There is Samsung Galaxy A20s
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why doesn't anyone check for flicker through a microscope? then we could be more objective for the majority about screen safety.
my friend from another forum tested several android phones, iPhone 11 and incell screens for iPhone 12 Pro Max and iPhone 14 Plus
the safest screen among android turned out to be Huawei Mate 20 and I confirm this, in five years of use I have never once encountered problems with this phone.
On iPhone 11 he noticed strong Temporal Dithering, which can cause symptoms. the incell screens for iPhone are more complicated. the most flicker-free screen was the screen from RJ factory for iPhone 12 Pro Max, flicker was either not detected at all, or was very slight and only on certain settings. but after iPhone 12 or iPhone 13 RJ factory changed the technology of display production, the pixel structure changed and the screen began to flicker more. Of all the screens tested for the iPhone 14 Plus, the most flicker-free was the screen from HL factory, but it is of low quality with poor colors and still flickers more than RJ for the iPhone 12 Pro Max. He also tested screens from JK, EK Pro, TC and a few more completely unknown and they all flicker noticeably.
I'm also attaching a video comparing incell screens and iPhone 11 where you can see the flickering.
snksmxnzkz mate 20 doesn't use temporal dithering ?
jordan Through the microscope, flicker is either completely absent or almost imperceptible. so far, this is the most flicker-free phone of all tested phones.
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del
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snksmxnzkz Ah. Was hoping to buy iphone 15 pro and RJ screen for it.
As i have RJ for regular 12. Its not usable for me for something like maps navigation, reading or youtube playing but after installed RJ i can use it for camera, sound recording and voice pitch monitoring (which requires me to stare at the screen a lot), but for some reasons staring at the app called Singscope doesnt hurt my eyes opposite to google maps in night mode (immediate pain)
My main phone is iphone 11 which doesnt hurt at all. But cant find another 11 which will be the same pain free for my eyes. Thats why trying to prepare myself to the moment 11 screen will die.
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Cons Maybe on other iPhone models the situation with flicker will be different, I have not yet been able to find measurements of incell screen flicker for the 13th and 15th series of iPhones.
I don't exclude that the incell-screen manufacturing technology is different for each iPhone series, or the hardware of the device may affect it.
We have too little data because no one checks their screens and doesn't know about Temporal Dithering.
Besides, it would be worth writing to all factories that produce incell screens and ask them for more data about this situation.