Your device will vibrate when lifted to notify you of missed calls and messages.
Smart Alerts on Samsung Galaxy J7 Plus follow these instructions:
Step 1: Go to 'Settings' and select 'Advanced Features'.

Select 'Advanced Features'.
Step 2: Select 'Smart Alert'.

Select 'Smart Alert'.
Step 3: Turn on the feature.

Enable the feature.
That concludes your setup process. Wishing you all success.