"If physical brightness of your iPhone 11 or 11 Max display remains at 50% setting or higher, there will be no PWM flickering either;"
blog.elcomsoft.com
"The display backlight flickers at 290.7 Hz (Likely utilizing PWM) Flickering detected at a brightness setting of 99 % and below. There should be no flickering or PWM above this brightness setting."
www.notebookcheck.net
What i want to know is which article is true?

Using DC Dimming to Stop PWM Flickering in iPhone 11 Pro and Pro Max, Google Pixel 4 and 4 XL
Just like the previous generation of OLED-equipped iPhones, the iPhone 11 Pro and Pro Max both employ OLED panels that are prone to flickering that is particularly visible to those with sensitive eyes. The flickering is caused by PWM (Pulse Width Modulation), a technology used by OLED manufacturers

"The display backlight flickers at 290.7 Hz (Likely utilizing PWM) Flickering detected at a brightness setting of 99 % and below. There should be no flickering or PWM above this brightness setting."

Apple iPhone 11 Pro Smartphone Review: Triple rear-facing cameras and more power than you could shake a stick at
Notebookcheck.com reviews the Apple iPhone 11 Pro, a device that wants to impress with its stronger battery, new triple rear-facing cameras and premium design. Read on in this live review to see whether the iPhone 11 Pro lives up to expectations and how good the A13 Bionic SoC is too.
What i want to know is which article is true?