Plsnostrain I just bought the iphone 8 plus and I have to say , so far no strain. I used it for a couple of hours.

How's the iphone 8 after using it for a week, any eye strain?

      Kray I am also interested. Tried friends iphone 8 and it seems better, but cant tell for sure. Would need to buy it and detox from my current stable headache from testing the 7.

        Hi again. I havent experienced any eyestrain. It seems fine! But we have different cases of eyestrain (although some have same) ,so I cant guarantee it will work for all.

          8 days later

          Guys n gals am sad to say that the latest 2 software updates to iPhone 7 n ipad have ruined it for me. All was well and they have done something that now gives me insta-headaches on iPhone 7 and delayed headaches on iPad 2017. It's something to do with the GPU driver am quite certain. On the same hunch I picked up an el-cheapo Lenovo K8 Plus (Mali GPU) and it is fine thus far on moderate use with a blue light filter app on to dull the whites. Adreno and Power GPUs seem to be upsetting my system for no known reason.. This seems to be a part of the problem.

          ensete all the best, been there done that, it was a fail after 1 week of use. Similar experience with Mi A1, Mi Max, and Mi 5. For some reason Redmi Note 3 (3G) was much better. Hope u have better luck.

            Hi! I use Sony e5 from march, and I don't have any eye strain. 3 times something change and I feel strain, but after hard reset it is fully comfortable.
            Previous I used iPhone 4 - no strain, 4s - horrible strain, 6 - permanent strain after one hour, Samsung S5600 - permanent small strain, Moto e4 2017 - permanent small strain.

            Does anyone use Sony XZ1? this phone have PWM, but in store after 5 minutes use, it's fully comfortable.
            New iPhones and iPads doesn't have PNW, but I still have hard strain.

              Sfrix Its not clear if they do not have it. Apple only claims they dont. They use many different display suppliers. Unless you test for it yourself with proper oscilloscope, you do not know and I would not trust them on their claims.

                  martin Did Apple really make any claims regarding PWM? Doesn't seem in keeping with how they operate. Claiming a device as PWM free would mean previous devices PWM driven devices as faulty and Apple never admits its hardware as faulty unless forced by safety recall.

                      degen you are right, they actually never did. People claim they do not use it anymore, but never apple. I still wonder whether my iphone 4s is a lucky unit that doesnt use pwm. Need to get proper gear to finally test it.

                      • JTL replied to this.

                          ensete I'm using Redmi 3s with "Reading Mode" enabled without any problems. As i know Xiaomi provides two types of screen for this model (BOE и EBBG), my device has BOE one.

                            7 days later

                            I tried Android 8.0 (OxygenOS) on my OnePlus 3, but it's extremely unusable, like 7.1. Burning eyes and feeling exhausted just by looking at the screen for an extended period of time. I installed the firmware files (proprietary blobs by OnePlus), modem firmware excluded, from the usable Android 7.0 OxygenOS release over the 8.0 installation: The OS still works, but no relief. I installed LineageOS 7.1x (current) with the 7.0 firmware files: no relief. So it looks like the device firmware might not be responsible for this problem.

                            martin @TechSensitive I interviewed the head of Apple display engineering back in 2015 and he says the majority of Apple products with LED backlit displays made after late 2009 use PWM around 120Khz below 50% brightness, otherwise there is no PWM.

                            Sadly he is very busy and the person who connected me with him has retired from AAPL.

                            Notebookcheck has upgraded their oscilloscope and are able to detect it now.

                                JTL Very cool that you got this spot on years ago. That inside connection was super legit.

                                  JTL I see! Its very weird to think my nervous system would notice 120khz, but I feel how I feel when I try to use these.
                                  Cant they just stop making this shitty tech? PWM, shitty light spectrum, and expensive anyways. I wonder if it also affects other people who dont notice it and we are actually the lucky ones to avoid it long term.

                                  Im building an oscope from my external sound card and some cable and soldered photodiode using freeware scope software. Ill post if I get any results. The amplitude of the flicker is very important as well for us I believe.

                                      martin Cant they just stop making this shitty tech? PWM, shitty light spectrum, and expensive anyways. I wonder if it also affects other people who dont notice it and we are actually the lucky ones to avoid it long term.

                                      Remember, we are the tiny minority. The truth is unless something impacts them directly, most people just don't care.

                                      I agree that we are ahead of the curve, all we can hope if that the public and science will catch up with us. Keep spreading awareness wherever you can

                                        martin

                                        martin I see! Its very weird to think my nervous system would notice 120khz, but I feel how I feel when I try to use these.

                                        I highly doubt it's your nervous system noticing 120Khz PWM. A good way to check would be to find a "known good" LED light that doesn't cause any symptoms when constantly DC driven and run it at 120Khz PWM with an Arduino.

                                        martin Cant they just stop making this shitty tech? PWM, shitty light spectrum, and expensive anyways. I wonder if it also affects other people who dont notice it and we are actually the lucky ones to avoid it long term.

                                        Apple balanced the aspect of making a flicker-free display with preserving color accuracy. I say we "won the war" with PWM now that more flicker free laptops and such are available now.

                                                JTL thats a good idea with the 'known good' and arduino. it does seem like there are some leds out there that i can handle. maybe certain colors like a yellow-green.

                                                  JTL if that is the case, why are thr devices still unusable? Dithering, LED color?
                                                  Im taking macushield supplements that should make me as indifferent to blue light from LEDs as 90% of the people who have no issues, but so far not much difference.
                                                  Are you covinced its dithering then?

                                                  Im not an engineer to be easily able to build the arduino test device. Would have to study it and it doesnt seem like a fast task. Thank you for the tip though, goes on my list.

                                                      dev