JTL Would be very helpful. If not for this particular device but certainly for AMOLED devices in general. Not sure how much Hz we need though. The values we need might be out of the device's safety zone.

  • JTL replied to this.

    KM Alright

    Think I'm going to use my mother's old Galaxy S4 as a testing device when she replaces it. It's on an ancient bootloader version too.

    20 days later

    Harrison

    Harrison, sorry to hear that HTC One M9 causes you eye strain as well. I dont know why it causes eye strain to you, because it works find for me. Maybe it is true that HTC has 2 different panel manufacturers, one causes eye strain and the other doesnt. Or maybe everyone suffer from multiple causes of eye strain, so a device that works for one person may not necessarily work for another person.

    By the way, what version of android does your HTC comes with? Mine is on Lillipop 5.02. As you know, software or different OS versions may cause eye strain as well. If Marshmallow causes eye strain, then I am not going to update my phone software. I dont want to risk getting eye strain on my phone (HTC One M9+ Supreme Camera Edition). This is the only phone model that I can use with eye strain whatsoever.

      hey Kray

      We already talked about that, but I'll share the information for all of you here:

      I've tried HTC One M9 (normal edition and supreme camera edition), but both weren't really good for my eyes. So I decided to purchase another HTC One Mini 1. This was the phone I'd used for 2 years now, however the battery has broken and it's not that easy to swap that battery. Moreover it's difficult to get such an old phone here. Nevertheless I bought a secondhand refurbished HTC One Mini at Amazon, but this one has some defects and I've sent it to the HTC Support in order to have a "new" HTC One Mini1. Thought the support just sent me back an new HTC One Mini 2. The first days and hours were really hard for my eyes, but now it seems that I don't have any problems any more with this new HTC One Mini 2, but do not count your chickens before they are hatched.. Maybe my eyes also need some adjustment with every new display. So Maybe there's a chance to also get used to newer HTC One M9.
      Also I've to say, that I've never get used to any display after some time so far.

      Long story short. Maybe there are different HTC Display manufacturers, maybe also the Android versions counts and last but not least you guys ever should give your eyes to "adjust". So always test a new system for at least a hole week before you say that you are getting eyestrain.

      Although most people here (like me) are Android or iOS, has anyone tried any windows phones with success?

      I've looked into the Lumia line and it looks like the budget model (Lumia 550) uses an LCD display according to the tech specs. Curious to know if it's actually a ccfl-type display being used..

      • Gurm replied to this.
        6 days later

        iPhone 7+, few minutes with demo unit at store = hard eye pain. No change with Apple at all.

        • KM likes this.
        4 days later

        Hi All
        This is Special request and i Desperate for help , i have a smartphone screen problem i trying to use many of smartphone from a lot type and company all of the screens that i use make me extremely eye strain I notice after about 10 - 15 mins of use, I get dizzy and my eyes hurt like they are burning ,the only phones that I can use without eye strain are “Stupid Phone” like Nokia 108/105 I visited many eye doctors over the years and none of them could explain this issue,It all started with the first iPhone in 2007 over the years Smartphones were more useful and allow us to be connected all the time, I began to realize that sooner or later I'll need to use smartphone and i started to make a research to figure out this problem i've tried to turn the brightness down all the way and instell app thet dimming the screenand Nothing of it helped,With every screen I feel diffrant pain and i triyng to understand What makes my eyes Get hurt from the screen
        Maybe its type of screen or the Refresh rate or screen technology,maybe you can advise from your experience have any idea here ?

        Many Thanks
        BoB

        Hi Bob, it's frustrating, but we're all still trying to figure it out as well.

        Do you have issues with any other digital devices besides phones? What about LED computer monitors?

        Hi MagnuM
        Yes, i have some eye strain from LED computer like Macbook/iMac some of Samsung Computer screen
        And even LCD screen and some LED TV,for me digital life its so Complicated and uncomfortable
        But smartphone screen its the most hard for my eyes and Very Painful, i try many type of Creative ways to
        figure out this problem, I use Yellow screen protector on the screen,use Mirror to look on the screen
        2 layer of screen protector Without any success, i really don't know what to do

          BoB Hi Bob, unfortunately, I don't know what to do either. Later that day during my last post, I went to a friend's house that just bought a new HP Laptop. I could tell right away by looking at it that it was an LED screen, and I got symptoms right away just by looking at it for a few minutes. It's the strangest thing in the world, and i can't explain it. I have no idea how people can look at these things all day long, when it gives me such a sharp pain in my eyes and head after only a few minutes.

          • JTL replied to this.

            MagnuM Which model of HP laptop? Screen quality can differ from absolute flickering garbage to decent IPS panel.

              MagnuM I would see a long afterimage after closing my eyes, of what I saw on the screen. It feels like it's as bright as the sun or something!

              Huh. This would make me think it's an eye problem.

              KM The first options I set were "Force GPU rendering" and "Disable HW overlays".

              Why do these options help ?

              • KM replied to this.

                autobot They don't help me. I originally set them because it was recommended elsewhere, but after some weeks of testing I'm sure they don't help me in any way. Maybe they were useful in older Android versions. I'm using my device for many weeks now without changing any of those options' defaults.

                Hi All
                This is Special request and i Desperate for help , i have a smartphone screen problem i trying to use many of smartphone from a lot type and company all of the screens that i use make me extremely eye strain I notice after about 10 - 15 mins of use, I get dizzy and my eyes hurt like they are burning ,the only phones that I can use without eye strain are “Stupid Phone” like Nokia 108/105 I visited many eye doctors over the years and none of them could explain this issue,It all started with the first iPhone in 2007 over the years Smartphones were more useful and allow us to be connected all the time, I began to realize that sooner or later I'll need to use smartphone and i started to make a research to figure out this problem i've tried to turn the brightness down all the way and instell app thet dimming the screenand Nothing of it helped,With every screen I feel diffrant pain and i triyng to understand What makes my eyes Get hurt from the screen
                Maybe its type of screen or the Refresh rate or screen technology,maybe you can advise from your experience have any idea here ?

                Many Thanks
                BoB

                Unfortunately, there are many things that can cause eye strain. Chances are, you are affected by multiple causes of eye strain, which makes it difficult to find a device/phone that does not have all the things that is causing you eye strain. I suggest you do your investigation, see the list of known causes of eye strain...try and see if one of more of these one thing at a time, identify/eliminate one thing at a time. It is a difficult and tedious process. But you have to do it, know one else, even most doctors, wont know how to solve it (at least not yet).

                If you have not been able to use any smartphone without eye strain at all, that means you have quite a severe eye strain problem, which makes it harder to find a solution. But, keep trying. I have tried many different smartphones at the store to see if I get eye strain or not. Those models that are not available at the store, I bought and import from overseas, only to find I get eye strain from them and sold them again. Many times I did this until I find one that I can use without eye strain. Its hard having this kind of problem, but gotta keep looking and keep trying. Good luck.

                5 days later

                Sorry for the long delay, guys.

                I definitely cannot use MM on my HTC one m8. Intriguingly, the problem started BEFORE installing MM, after just flashing in the MM firmwares prior to installing the OS itself. So there's definitely something that happened in the driver layer of the firmware that drives the screen differently on the MM firmware.

                The firmware that works for me is the VZW firmware package that includes:

                HBOOT 3.19.0.0000
                RADIO 1.14.20.0930
                OpenDSP v51.2.2-00593-M8974_FO.1015
                OS 4.17.605.9

                • Gurm
                • KM replied to this.
                • KM likes this.

                  diop there is absolutely no chance of finding a CCFL-backlit phone. To my knowledge one has never been produced, ever. LED screens are still LCD. All displays that aren't plasma or OLED or Laser... are LCD. LED screens are simply "LED lit".

                    Gurm HBOOT is the firmware? I'd like to test this on my HTC One M8. Previously I installed CyanogenMod KitKat, but that probably didn't downgrade any firmware?
                    Any chances the firmware is the real reason why we believe there are "good" and "bad" HTC One M8?

                    No, HBOOT is only a component of the overall firmware package. Each image file inside it is responsible for a different thing. Radio is a piece, ADSP is a piece, etc.

                    I came here to report something positive. This will only work if you are S-OFF. It will not work at all if you are S-ON. If you need to ask what the difference is, you are S-ON.

                    The harman/kardon sound mod is the ADSP firmware blob. Happily, this blob also affects the display, so you get subjectively better sound while also getting a bit better backlight smoothness. It is noticable to me, I was always flipping HW Overlays off, but with this I haven't done it at all yet.

                    My setup, sharp panel, dev edition firmware 6.12.1540.4. This firmware comes with the DSP version 51.2.2-00593-m8974_f0.1015 that @Gurm listed despite it being lollipop, so that is also promising and honestly, I liked the DSP version in MM GPE H14 better in comparison, but the HK DSP version is better than both! If you flash the sound mod in, you will end up with a DSP version # of 62.2.2.

                    http://forum.xda-developers.com/htc-one-m8/development/mod-audio-hk-bs-aroma-switcher-4-1-0-t3035354

                    TWRP is used to install the switcher, it is very nice. You select what you have and what you want. To be clear, select HK if you want the DSP updated. If you select Boomsound it will leave you with what you already have.

                    Version 5 of this mod is for MM. For LP and KK you have to use older versions, but my testing with it is only with MM and only v5 has the DSP version of 62.x

                    • Gurm replied to this.
                      dev