The Wi-Fi sharing feature allows you to distribute your 3G connection to everyone around using Wi-Fi signals.
Here's how to share 3G as Wi-Fi on Samsung Galaxy J3 Pro:
Step 1: Access 'Settings' and select 'Connections'.

Head to 'Settings' and select 'Connect'.
Step 2: Choose 'Share internet connection'.

Select 'Share internet connection'.
Step 3: Turn on 'Mobile hotspot'.

Activate 'Mobile hotspot'.
Step 4: Choose 'Mobile hotspot' to set up name and password.

Select 'Mobile hotspot' to set up name and password.
Step 5: Set up wifi broadcasting name and password.

Configure your WiFi network name and password.
That's how we've managed to share 3G as WiFi on the Samsung Galaxy C9 Pro. Wishing you all success!
