Is the display identical to the Zenfone 8 hence the pwm value should be the same?
its the same panel but doesnt mean its the same pwm value. It's likely but not guranteed
I feel the screen gives me more reactions than the Zenfone 8 did. I'm sensitive to pwm and found the Zenfone 8 to be very mild in that sense.
Do you notice a difference between 60hz and 120hz? many have complained that the PWM issues are only above 60hz.
I only use the Auto mode just like I did with the Zenfone 8. I don't want to milden the symptoms but rather eliminate the cause so if notebookcheck publish their coming review of Zenfone 9 from which can be concluded that the pwm value is worse than the previous model, I will return this and buy a new Zenfone 8 again.
Auto mode in zf9 is from what I know more responsive and more aggressive. Meaning, it makes sense youd feel more uncomfortable on the zf9. I strongly suggest setting it on 60hz.
Why use anything else than 120 hz?, getting 8-10h screen on with 120 hz
Due to sensitivity to pwm which allegedly higher Hz seems to worsen.
"The display backlight flickers at 495 Hz (Likely utilizing PWM) Flickering detected at a brightness setting of 45 % and below. There should be no flickering or PWM above this brightness setting.
The frequency of 495 Hz is relatively high, so most users sensitive to PWM should not notice any flickering. However, there are reports that some users are still sensitive to PWM at 500 Hz and above, so be aware.
In comparison: 52 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 19947 (minimum: 5 - maximum: 3846000) Hz was measured."
for the zenfone 8, is it really an issue?
We're discussing the Zenfone 9 with regards to possible bad pwm values in comparison with the Zenfone 8 which is very good for people sensitive to pwm.
Ok, but as the panel seem very similiar to zenfone 8, why du you expect it to be worse?, i have both and they look identical, no flickering
Just a vague feeling based on usage for a couple of days. Read the first reply to my question by Danishblunt who establishes that there sure can occur differences between these two models despite having the same panel.
Is there any way to check it? without expensive tools
Edit, i checked zenphone 9 screen at low bightness with s22 camera, it seems to flicker at low freq
Edit 2: s22 flickers the same way as zenfone 9
Make sure DC dimming is enabled and the phone is at 60hz, there should be no flicker whatsoever.
Waiting for notebookcheck review where pwm always is measured.
I know but would like to be able to use it on auto just as I did with the Zenfone 8
There are some apps with different approach on dimming, anyone tried this?
I don't understand the logic. If you're not able to handle the flickering, then why would you expose yourself willingly to it?
It doesnt matter if its the zf8 or zf9, its still flickering unless you do 60hz with dc dimming on. Regardless if the zf8 or zf9 gives you less headaches on auto mode, you shouldnt torture yourself by using auto mode on either device to begin with.
Simply because I would like to experience it with higher Hz without experiencing pwm which is possible on the Zenfone 8. So rather than downgrade it through the settings I could just use a Zenfone 8 without having to miss the better screen performance.
For me, the whole point of buying Zenfone the first time had to do with its limited pwm. There wouldn't remain any sufficient reason continuing with this brand if the pwm is similar to other leading brands.
Hate to break it to you but both phones cannot do DC dimming above 60hz. The reason you feel worse using the Zenfone 9 is simply because in auto mode it mostly sits around 90hz rather than 60hz which the Zenfone 8 was using on auto on for the most part. If you would do something that would force the refreshrate higher u'd feel equally ill on the zenfone 8. You basicially used your zenfone 8 for the most part on 60hz due to ASUS being very conservative with the switching.