Enter the Messages app-click the+sign at the top-click the+sign behind the receiver-select the contact-and then send, and you can send short messages at a time, up to 200 at a time.
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.