How to set the sleep mode of mobile phone?

If you are using a vivo phone, you can go to Settings-Battery-(More Settings)-and turn on "Sleep Mode" (if there is no switch, this model is not supported). After turning on the sleep mode, you will receive background messages intermittently at 0-6 o'clock or 23: 30-7 o'clock in the middle of the night, which will not affect the reception of telephone calls and short messages, nor will it affect the reception of messages during the day and when the bright screen is used.

If you have more questions, you can go to official website /vivo Mall APP-My-Online Customer Service or vivo official website Web Edition-Slide to the End-Online Customer Service-Enter the manual customer service for consultation and understanding.