Often there are situations when the owner of a smartphone turns it on and finds one or more colored dots on the display and does not know how To Fix Dead Pixels On Phone. They do not disappear with time and when the image changes, they also remain in place. Such dots are dead pixels associated with the liquid crystal properties of the screen.
A separate element of the screen suddenly ceased to perform its functions and transmit the correct image – this is pixel damage. Many manufacturers immediately indicate the possibility of the presence of such pixels in their devices, allowing an error of 2-3 pieces.
What Is A Dead Pixel
Dead pixels are dots of a raster with violations. They cannot correctly convey information about the color of the image and can be found not only on smartphone screens but also in the sensors of many digital cameras or in the RAM of video cards. A broken pixel itself is an exclusively visual defect that does not interfere with the functionality of the device; in practice, there are practically no ideal matrices with the complete safety of all crystals. However, a damaged pixel can cause inconvenience to the smartphone owner when viewing images and video files.
It is possible to meet dead pixels in four different variations:
- Cold (extinct) – in any type of image, a black dot is transmitted, such pixels are incurable and arise due to a defect in the control layer of the matrix.
- Hot-white dots on a color image, such pixels are distinguished by an incorrect dependence of the displayed signal on the control signal.
- Dependent – the pixel gives incorrect data and at the same time depends on neighboring sections of the matrix.
- Stuck – a fixed colored dot associated with a problem in the operation of the liquid crystal matrix. Not found on OLED devices.
Why Do Pixels Appear On A Smartphone Screen?
There are three main reasons why dead pixels can appear on a smartphone screen. These are manufacturing defects, the influence of third-party factors, and hardware and software failures. Most of the reasons involve the impact on the crystals of the LCD substrate.
If we consider manufacturing defects, then damaged matrices in this matter can be divided into 4 types:
- There are no dead pixels at all.
- There are no critical dead pixels, other types – no more than two.
- No more than five dead pixels, no more than fifteen others.
- Faulty matrices (the number of dead pixels, in addition to five dead ones, exceeds fifteen in total).
If the problem with pixels arose as a result of a software and hardware failure, it is easy to solve it in a service center, and some are able to fix the defect at home. With regard to the occurrence of dead pixels as a result of external influences, power failures, overheating or hypothermia of the smartphone, strong impact or falling on a hard surface, as well as proximity to a strong electromagnetic field source can have a negative effect.
First of all, it is important to check whether these are really dead pixels on the smartphone screen, or if you have encountered other color rendering defects. The easiest way is to start the camera by covering the lens with your finger. So you get a black background, on which hung white or colored cells will be clearly visible. You can also use special programs that create a special picture, against which dead pixels will be clearly visible.
For Windows, Dead Pixel Tester or PixPerAn are suitable. For the Android operating system, you can use Display Tester or Screen Test. For Apple devices, there are Dead Pixel 2 and TestM utilities. All these applications work on the principle of periodically changing a certain background color, making it easy to identify one or more cells on the smartphone screen,
If broken pixels are detected and at the same time they are not dead, and it will no longer be possible to hand over the phone for repair within the warranty period, you can try to fix the defect yourself. For Android, you can use a special ZooxSoft treatment program, but iPhone owners are recommended to use the jscreenfix.com online service, which is also suitable for other platforms.
In case the programs did not help, there are more serious ways to influence. You can try to remove dead pixels on the smartphone screen in the following way: after removing dirt from the surface of the screen with a soft cloth, you need to gently “massage” the place where the pixel is hovering with the same cloth for several minutes. Instead of a rag, you can use a lint-free cloth.
Another method is temperature exposure when the gauze is impregnated in water heated to 70-80 degrees, which is placed in a tight bag and the surface where the damaged pixel is located is kneaded with this bag.
IMPORTANT! Movements should be accurate and not too strong, independent actions to restore the color reproduction of pixels on the smartphone screen are always performed at your own peril and risk. There is always a chance to accidentally crush the sensor and get the opposite effect of a spilled screen, after which the smartphone will definitely have to be sent in for repair as soon as possible.
Prevention Of Your Smartphone After Pixel Restoration
If independent methods did not help, you should contact a specialized service center. The wizard will diagnose and determine whether it is possible to remove damaged pixels, or whether they are dead and cannot be repaired.
After restoring pixels, you need to actively use applications with frequently changing colors in order to prevent the possibility of your smartphone screen element freezing on a certain color again. Also, good prevention is the regular use of a smartphone with a maximum backlight level.
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