iPhone XS Does XR have PWM? (For people w sensitive eyes)

[thadoggfather]

I’d be curious !

 

[Vermifuge]

OLED (and its versants) not LCD use PWM (or a combination of PWM and other techniques) for screen dimming

 

[Jimmy James]

Nope. If you're sensitive to pwm the XR is the only new iPhone option.

 

[JPack]

Already confirmed no by a MacRumors editor on Reddit. He recorded video at about 1/3 brightness and no flickering was visible.

 

[blackberrycubed]

Already confirmed no by a MacRumors editor on Reddit. He recorded video at about 1/3 brightness and no flickering was visible.

was it in slow mo ?

 

[bodonnell202]

Technically LCD screens also use PWM, but LCDs use high frequency PWM, whereas OLED screens use low frequency PWM and it is low frequency PWM that causes issues for those that are sensitive to it.

 

[Hieveryone]

What is a pwm? Is it good and do I have it?

I have the iPhone X AT&T version. Also, it is the 64GB one.

Someone please let me know. Thanks!!!

 

[aakshey]

IPad Pro 2017 has PWM. Irritates the crap outta me. Can’t use without TrueTone. With TrueTone on it’s fine. Same with X. I’m sure XR is likely to be the same too.

No issues with iPad 6th gen though.

 

[apolloa]

What is a pwm? Is it good and do I have it?

I have the iPhone X AT&T version. Also, it is the 64GB one.

Someone please let me know. Thanks!!!

If memory serves, PWM is Pulse Width Modulation.
I guess it has to do with the screen refresh rates on phones? Or the rate the backlights flash?

 

[stafil]

Does XR have PWM?: No. At least not with a low enough frequency to be captured by slo-mo video.

https://forums.macrumors.com/threads/eye-strain-while-using-iphone-x.2085427/page-81#post-26700741

 

[Kristine]

I can notice it on my Xs Max. I can't notice it on either of the XR that were delivered today.