Let's chat via WhatsApp
Settings
This should be a seemless link on most smartphones and tablets but it might require a once-off setting on your computer. Download, install and run the official WhatsApp App on your computer. Then open WhatsApp on your phone and click the main menu, select the WhatsApp Web option and follow the instructions to pair your device. Now click the chat button above. You may be asked to select an app for this command. Locate WhatsApp.exe on your device and select it as the permanent app for this action. On Windows, the app is often in the <user>/appdata/local/whatsapp/ folder.
It is as simple as that!