The screen of the mobile phone suddenly became very dark. What happened?

If you use a vivo mobile phone, it will generate a certain amount of heat during the use of the mobile phone. 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. When the temperature drops, it will return to the original screen brightness. Please feel free to use.

If you are worried that the mobile phone is not normal, you can take it to the service center for handling. Enter the browser to search for official website-Service-Service Center -vivo All- select provinces and cities to inquire the address and contact information of local service centers.