Countdown atomic component:
(1) At the origin desktop-Atomic component-sticker-long press "Day sticker" to add it to the desktop, and then click on the component-set the target date.
(2) In the classic desktop, press and hold a blank space on the desktop to enter Desktop Editing-Atomic Components-Stickers-Long press "Day Stickers" to drag and add to the desktop, and then click Components-Set Target Date.
Models that do not support atomic components can search for supported software to download and use in the application store that comes with the mobile phone; If you still have more doubts, you can enter vivo official website-My-Online Customer Service-Enter labor and consult online customer service feedback.