After moving the machine, the display will appear color difference, such as

I guess it's the color setting of the graphics card. Since there is no problem with the screenshot, it proves that his actual image is the same as that shown in the mobile phone, but it is just a display problem. First, let's see if it's the monitor. You can connect it with other confirmed monitors to see if the problem still exists. If it's still there, it's not the monitor and its settings. At this time, if there is no problem with the video cable, it can be judged as a graphics card problem. At this time, the best way is to try to change a good graphics card. If you don't have it at hand, try to correct the graphics card settings first, and maybe you will be fine. If you change the monitor, it is the monitor. Look at this.