I have updated my iPhone11 to IOS 18.5 and found not much difference in term of eye comfort. My iPhone 11 uses the screen panel from Toshiba. How is your experience?

I personally noticed eyestrain using 18.5 on iPhone 16e so I quickly rolled back to 18.4.1 which is fine for me.

@"NewDwarf"#p43409 Is the difference significant or just minor? Sometimes it takes a while to find out if there is difference.

@"ITwebs"#p43416 pretty noticeable difference. I cannot use normally after updating to 18.5. Now, after rolling back it gets usable again. I don’t think it is psychological factor…although…

@"NewDwarf"#p43426 What screen does your iPhone use? You may find it out through this, which is posted by **[Chirderf ](https://www.reddit.com/user/Chirderf/)**in reddit: "For those wondering how to check your display manufacturer... You can run sysdiagnose on your phone (press volume up, volume down, and lock button) all together for around a second. You will feel the phone vibrate. Wait a couple of minutes and then go to Settings -> Privacy and Security -> Analytics and Improvements -> Analytics Data. You will then scroll down and look for a file titled: sysdiagnose_XXXXXXXX. You will click on that file and then dick the arrow in the upper right hand corner and scroll down and click “Save to Files” Once it is saved you will go into your files and click the file to unpack it. Within the folder that is unpacked you will click on the folder “ioreg” and then click the file “IODeviceTree”. You will then use the magnifying search glass in the bottom right hand corner to search “raw-panel”. It will then give you a serial number. I have an LG display which has the beginning letters of GH3."

Please take a look at my thread regarding Samsung phones introducing symptoms after specific OS update: [Upgrade one app, phone is ruined, even after rollback? - LEDStrain Forum](https://ledstrain.org/d/3353-upgrade-one-app-phone-is-ruined-even-after-rollback/13). Maybe in the case of iOS it's more or less the same - GPU driver update? Even security improvements can somehow affect the image and introduce symptoms. Best Regards, Tom

@"floydian"#p43431 Things are very complicated nowadays…

@"ITwebs"#p43430 I have no idea what panel on my phone. It begins with G9Q.

How is your experience of IOS 18.5?

floydian

Please take a look at my thread regarding Samsung phones introducing symptoms after specific OS update: Upgrade one app, phone is ruined, even after rollback? - LEDStrain Forum. Maybe in the case of iOS it's more or less the same - GPU driver update? Even security improvements can somehow affect the image and introduce symptoms.

Best Regards,

Tom

ITwebs

floydian

Things are very complicated nowadays…

NewDwarf

ITwebs I have no idea what panel on my phone.

It begins with G9Q.

ITwebs

NewDwarf

Samsung G9Q

macsforme

For those who find a specific iOS update (especially the current version) to induce eye strain, though it may seem frivolous, I hope we are filling out feedback forms to Apple. Since so few of us are affected and/or have the technical knowledge/awareness of the problem, I think it is important that Apple hears from us as much as possible.

ITwebs

macsforme

Maybe we can create a signing groups and send an email to Apple? In that way it can become more persuasive.

JOSEUISLEY

NewDwarf No, it's not a psychological factor. To optimize the battery consumption that each operating system update requires, companies simply implement more and more PWM for possible energy savings.

ocean10

A few people on Reddit are reporting that iOS 18.5 actually made things improve. Has anyone else noticed this?

https://www.reddit.com/r/PWM_Sensitive/comments/1kv0jpq/updated_from_1832_ios_to_185_seems_it_make_better/

ITwebs

ocean10

Thanks for the info. How about your own experience? Do you find it better after upgrading to IOS18.5?

ocean10

ITwebs

I haven’t on my daily phone because I can’t take the risk of updating my only useable phone (iPhone SE3 on iOS 16.1.1)

I’ll try it on an already “bad” iPad and see what happens.

ITwebs

ocean10

Seems the effects of IOS versions on ipads and iphones are different? Even two different phones with the same model can have different impacts.

randomboolean

ITwebs Not sure about the software, but most iPads have very different screens compared to iPhones. iPhones use OLED, while iPads are mostly IPS, with a few exceptions potentially coming this year. So testing on an iPad might actually be a good idea.

I’ve got a 14 Plus with the screen swapped to IPS (so-called INCELL) and updated to iOS 18.5. After 15 minutes of use, so far so good. There’s not much difference from the previous version. Just for context: I haven’t been able to use any iPhone with the original screen on any iOS version since my first one, which was a 7 Plus. However, I’ve been able to use all my iPhones with INCELL screens (both high-quality and cheap knockoffs) on every iOS version without any major issues.