While using LCD or AMOLED display the common phenomenon related to display problem caused by Dead pixel are Incorrect color , saturation issues , screen burn etc
So what to do when any display issue caused by DEAD PIXEL
To overcome dead pixel issue you need two things
1. A sound resonances wave frequency with 50 to 60hz
2. An LED light source of 3 to 9v DC battery operated , not AC power source
To rectify DEAD PIXELS
Switch off the device , hold the LED light source powered with 3 to 9v DC battery over the screen or over the point where DEAD PIXEL rised
And at the same DEAD PIXEL location hold the speaker usung which you gonna make or play sound with 50 to 60 hz
Within 5 to 10 sec of time DEA PIXELS will be removed
3. Repeat the same mentioned above while phone is powered on
This is a common phenomenon of LCD and AMOLED display to have dead pixel for various reason like Sun light , display power fluctuations
So it is much easier to remove dead pixel
Exception : in case dead pixel caused because of impact than you might need a display replacement
*Display impact : it may occur due to heavy pressure too as while carrying mobile inside pockets etc
* 50 to 60 hz : this sound resonances frequency can not be used with display which supports 120hz , for 120hz use 120 hz sound resonances ,
I also bought Samsung Galaxy Tab S7 and I am also facing this same issue of dead pixel. I was not sure about this issue before then I checked this on white screen and dead pixels are is clearly appears.
