Why can my phone be unlocked through Face Access when I wearing a mask?

What should I do if my device cannot be powered on?

How can I improve the success rate of fingerprint recognition?

What should I do if I forget the screen unlock password?

What is vivo General Warranty Policy?

How to register vivo account?

How to take clear photos?

What is Game mode?

What should I do if my phone lags or hangs sometimes?