Take caution: Samsung Galaxy Note 9 display flickers by design and could cause eyestrain

[Redaktion]

If your eyes are sensitive to flickering displays, then it may be best to avoid Samsung's latest flagship. The Galaxy Note 9 display flickers at a frequency of 227 Hz that could potentially cause headaches and tiredness. The practice, known as pulse-width modulation, is rarely seen on smartphones.

https://www.notebookcheck.net/Take-caution-Samsung-Galaxy-Note-9-display-flickers-by-design-and-could-cause-eyestrain.325712.0.html

[Alessandro]

To my knowledge, no OLED display hasn't got PWM, so not really a surprise here.

[engineer]

Almost everything that uses a display will use some sort of PWM. It is a very common practice that reduces battery usage as it is more efficient to turn the display on and off very fast rather than to just leave it on

[SE]

Instead of PWM some manufacturers use P-OLED display with voltage control (LG G Flex 2) or hybrid approach (PWM + voltage control) (Nexus 6, Moto Z2, iPhone X)

[Wyatt]

The final message is: go in a shop, and try it. Maybe you'll feel it, or maybe not. But try it before you buy it !!

[S.Yu]

I wonder what determines the frequency of the PWM.

[powerslave12r]

Here's a list of devices with their PWM: https://www.notebookcheck.net/PWM-Ranking-Notebooks-Smartphones-and-Tablets-with-PWM.163979.0.html

Spoiler: the iPhone X, S9, S9 plus and other OLED display phones have similar PWM.

Glad that notebookcheck reports this stuff.