You need to allow each computer to use your WhatsApp account by scanning a QR code from the WhatsApp app on your smartphone, after which you can communicate to your heart’s content.
Reduce WhatsApp’s data usage
Under WhatsApp’s Settings menu, you can navigate to Data usage to see how much data WhatsApp is using as well as how many messages have been sent and received.
By default WhatsApp automatically downloads images as it receives them, meaning you could potentially use more data than you intend. You can turn this off from here, as well as control what is automatically downloaded when on Wi-Fi.
If you find that videos are taking up a lot of storage space, it could be worth turning this off. There’s also a checkbox to turn on Low data usage , which reduces the amount of data WhatsApp uses during calls.
Apply text styling
If you’re using the latest version of WhatsApp, you can now apply text styling to your messages such as bold, italics and strikethroughs. You can do this as follows:
Just pop those characters before and after the text you want to format. You can also double up on the formatting to create text that is in italics and bold, *_as an example_*.