The name format in the Contacts app consists of first name, last name, but if you want to display the last name first, you can find the setting in the Contacts app itself.

Android 10 (ColorOS 7.0)
Step 1:  Open the  Contacts -App
Step 2:  Open the  Menu
Step 3:  Tap on  Settings
Step 4:  Tap on  Name order
Step 5:  Choose between  First name, last name  and  Last name, first name
  1. Open the Contacts-App
  2. Open the Menu
  3. Tap on Settings
  4. Tap on Name order
  5. Choose between First name, last name and Last name, first name

Oppo Instructions
Loading...

Transmitting...