1. Inquire about the usage time of the device after startup: go to Settings-System Management/More Settings-About Mobile Phone-Status Information-Usage Time, and check the startup usage time (some models need to go to Settings-My Device-More Parameters-Usage Time), and the usage time will be cleared after the device restarts.
Second, the use time after purchase: the first use time and total use time of the mobile phone after purchase cannot be directly inquired, so you can refer to the purchase time on the invoice. If the invoice has been lost, you can refer to the production date on the box.
If you have more questions, you can enter vivo official website-My-Online Customer Service-Sliding Bottom-Online Customer Service-Enter Manual Customer Service and enter the consultation.