How to use Whatsapp:
1. Download the app (Whatsapp).
2. Accept the permissions to sync your contacts to the app.
3. Save the Vendor's number to your phone's contacts with the plus sign in the beginning of the number.
4. Open up Whatsapp and click the green message icon to start a new convo.
5. Find the vendor contact and select it.
6. Type your message
"Hi.. I'm [your name] a reseller and would like to see your inventory and price list please" And then go from there.