To modify the screen lock nickname of vivo smart phone, it is necessary to set the screen lock style of the mobile phone to "light and simple" or "light and pleasant", and then modify the screen lock nickname.

Setting method of lock screen style: enter I theme-mine-local lock screen-lightness and simplicity-application. Setting method of screen-locked nickname: screen-locked interface-press and hold the avatar (some models long press the avatar)-click the+sign-enter the setting (modification) nickname and save it.

Specific operation steps (taking vivo X9 as an example):

1, lock screen style setting method

(1), click on the mobile phone desktop to enter the I theme.

(2), click to enter my-local lock screen.

(3) Choose something light and simple.

(4) Click Apply

2, screen lock nickname setting method

(1), the screen locking interface slides down according to the avatar.

(2) Click the+sign.

(3) Set (modify) the nickname and click Save.

Note: Nicknames can be up to 6 characters long, and the color of personalized signature can be changed.