So, what is PWM in a smartphone? According to the host of the HONEST REVIEW YouTube channel, this means pulse width modulation. With the help of this, the brightness of smartphones with AMOLED screens can be adjusted. A screen like this has lots of bright little bulbs. If the brightness is turned on to 100%, these bulbs will light continuously. PWM is used to reduce the brightness. The lower the brightness, the faster the screen will flash.
The specialist found out on which Samsung smartphone the screen flashes more aggressively: A33, A53 or A73. Theoretically, Galaxy A73 should be better and A33 worse than others. But really what?
It is important that the screen refresh rates of these three Samsung Galaxy models are different. A33 can be set to a maximum of 90 Hz, while A53 and A73 can be set to 120 Hz.
Normal PWM level is considered to be up to 10%, and if it is more than 50%, this is already very bad. In general, this coefficient can go up to 120%.
If you are worried about the effect of PWM on the eyes, turn on the blue filter (“Eye Comfort”) on your smartphone, activate the black and white shaded mode in the evening, set pale colors and a dark theme. In general, before buying a smartphone directly in the store, turn on the maximum brightness and look at the screen. If your eyes are strained right away, this device will not work for you. Better look for models with IPS screens.
The screen flickers most aggressively on the Samsung Galaxy A73, slightly less PWM on the A53. The safest for the eyes of these three smartphones will be the A33.
Source: Ferra
