1. At present, setting the power supply prompt tone is not supported;
2. Some models support the setting of fully charged tone. Go to Settings-Applications and Permissions-Application Management-and click on the top right corner. Dot? -Display system program-system interface-notification-full charge-sound-ringtone optional. If this option is not available, it means that it is not supported.
If you still have more doubts, you can enter vivo official website-My-Online Customer Service-Enter labor and consult online customer service feedback.