Flash notifications allow your device's camera light to blink when you receive notifications or incoming calls while the screen is off.
Follow these steps to enable Flash for calls on Vivo V7:
Step 1: Go to 'Settings' and select 'Other Settings'.
Select 'Other Settings'.
Step 2: Choose 'Flash Alerts'.
Choose 'Flash Alerts'.
Step 3: Turn on the feature.
Activate the feature.
That completes your setup process. Wishing you all the best.