Why does the mobile phone screen automatically dim?

If you use a vivo phone, you can refer to the automatic decrease of screen brightness/darkening of screen brightness:

1. Confirm whether to turn on the automatic screen brightness level.

See if the automatic adjustment of screen brightness is turned on? If this function is turned on, the screen brightness will change with the intensity of ambient light. You can enter Settings-Display and Brightness-Automatically adjust screen brightness, and turn off function viewing.

2. Confirm whether the mobile phone is hot.

When the screen brightness automatically darkens (the screen brightness automatically decreases), whether the mobile phone is hot, such as whether the operation such as playing games causes the mobile phone to be hot.

The mobile phone will generate a certain amount of heat during use. If the ambient temperature is high and large-scale programs are run, the fever will be more obvious. In order to prevent the temperature from rising continuously, the built-in protection function of the mobile phone will automatically reduce the screen brightness to reduce the power consumption of the mobile phone, thus reducing the fever and ensuring the safe use of the mobile phone. After the temperature is lowered, it will return to the original screen brightness, so you can use it with confidence.

Can you check whether the brightness value currently set on the screen is low? You can go to Settings-Display and Brightness, and adjust the brightness of the big screen to watch.

4. If it doesn't recover, it is recommended to take the mobile phone to the official customer service center of vivo for inspection and handling. You can find the address and telephone number of the nearest customer service center by entering the service outlet of official website app-Service-My Service.