Usually, the power button is below the volume button on the left and right sides of the screen of vivo mobile phone.

The power key, also called on-off key and screen lock key, is mainly used to unlock, light up the screen, or perform on-off operation.

If you have more questions, you can go to official website /vivo Mall APP-My-Online Customer Service or the webpage link of vivo official website webpage version-Slide to the bottom-Online Customer Service-and enter the manual customer service for consultation and understanding.