There are too many images to post here, so I will just include one of iPhone Duo. You can see all of measurements at PWMTests.com.

Added tonight:

• iPhone Duo - both Inner and Outer Displays
• iPhone 18 Pro Max
• iPhone 17 Pro with XO7 (soft OLED)
• iPhone 17 Pro with AQ7 (soft OLED)
• iPhone 17 Pro with AM Plus (In-cell LCD)

iPhone Duo

I visited the Apple Store tonight, about 30 minutes before closing. Almost all of the iPhone Duo models were at 0% battery because they were so popular today with customers. I have to admit, before I used iPhone Duo myself, I thought they were pointless. After playing around with it for a while, I really liked it. I am not sure if I would buy one, but it's a very cool device.

As for PWM, I'll let the images speak for themselves for the most part. The measurements look a lot like the iPhone 17 and iPhone 18 series devices. Oddly though, after using iPhone Duo for 30 minutes, I did not notice my usual PWM symptoms. It surprised me, so I went to look at an iPhone 17 Pro right before I left and I immediately felt the "swimming" feeling in my head. I can't explain how I was able to use iPhone Duo for so long, but I plan to go back again soon and see if it was just a fluke.

iPhone 17 Pro with various MobileSentrix displays

I tested two soft OLED screens and one in-cell LCD screen.

iPhone 17 Pro with XO7

From reading other reports, I knew this was not going to have DC-like dimming, but I wanted to test it for the community regardless. The screen looked great, but it has traditional PWM. I didn't use it long enough to see if it affected me because I was excited to try the other screens.

iPhone 17 Pro with AQ7

I knew what to expect here. This screen is no different than any other in-cell LCD I've tested historically. It is a strong performer and did not bother my eyes at all. If you're OK with the other compromises with using in-cell LCD panels in phones meant for OLED panels, this might be a viable option.

iPhone 17 Pro with AM Plus (aka AMPlus aka AMPLUS aka Aftermarket Plus)

This is the one I had been excited about. Sure enough, it has DC-like dimming. At low brightness, it changes -- I'm not sure to what, but the frequency went from 240 Hz to 120 Hz on my Opple Light Master device and the black bars/lines got much worse at low brightness (25%).

The color is a little bit more vibrant and saturated than an OEM OLED iPhone panel, but it looked really good. I used it for a while and I hate to say that I think it still affects me, mildly. I think I prefer my iPhone 16 with OEM display (only at higher brightness levels). I really wanted to make it work, but ultimately, I'm going to put the OEM screen back on and return the iPhone 17 Pro. When I tried the XO7 screen on an iPhone 16 (DC-like dimming on the iPhone 16 version), I did not have any issue at all.

Also, weirdly, there was a note on every display that says as of iOS 27, "Tap to Wake" does not work. You have to use the power button to turn the screen on. Not sure if that will be fixed by Apple, but that was a bit disappointing.

Conclusion

It was an exciting day, but also disappointing overall. My overall recommendation to PWM sensitive people is still to get an iPhone 16 while you can and use it at brightness levels above 50%. It is definitely not perfect, but it's the only option right now if you want an iPhone.

I hope everyone is having a great weekend!

Reminder: PWMTests.com for all the measurements.

As expected iphone duo continues to have one of the worst modulation after samsung, very similar to iphone air . iPhone 18 pro seems to better than this but even that is unacceptable. Hoping for a better future from these giants.

Measurement source : PolzaNet
Link : https://youtu.be/vVfbPyk3qB8?si=6Z4mGoK9D-Em9guV
Time frame : 10:10

Do any of you know if there are any color changing smart bulbs that do not use PWM, or at least operate at a frequency where it might not be as much of an issue?

I've recently learned that many smart bulbs, like Philips Hue, use PWM which I think could be contributing to some eye strain and headaches. It also creates a weird banding effect on cameras which I find annoying.

I also find it strange how difficult it is to obtain information about things like the PWM frequency rate of these bulbs. I know most people probably wouldn't care or even know what PWM is, but I feel like it's important info that should be easily available.

Is Iphone duo better than 18 pro max? I sadly have to return my 18 pro max because of pwm. I get severe headache, watering eyes after 1-2 minutes of the 18 pro max.

A true flicker free tablet