Open Settings
Tap Accessibility
Tap TalkBack
Turn off TalkBack
Confirm if prompted
If touch is difficult, press and hold both volume keys for 3 seconds to toggle TalkBack off
If...
Open the Vivo phone Settings
Tap Security or Passwords and security
Enter your current screen lock or account password if prompted
Look for Security question, Password recovery,...
Open the Phone app
Go to Recent calls or Contacts
Tap the number you want to block
Tap More or the three-dot menu
Select Block number
Confirm by tapping...
