Step 4. Tap on the ‘Get‘ button to start the download and installation process on your device.
Step 5. In the setup screen, enter your registered mobile number.
Step 6. On the next screen, enter the unique One Time Password you received for verification.
The Whatsapp Messenger is now downloaded, installed, and ready to go on your Android smartphone.
Case 3. Whatsapp Web/Whatsapp for PC and Mac
Step 1. Open the web browser on your PC/Laptop.
Step 2. In the URL bar, type in https://web.whatsapp.com
Step 3. This will open the web version of Whatsapp and you will see a unique URL code displayed on-screen.