In the year 2021, WhatsApp has more than 1 billion users. 

What is WhatsApp?

It's a popular instant messaging and video calling app that was founded in 2009.

How does WhatsApp work?

You can use WhatsApp on Android devices and iPhones.

If you want to send a message to someone you care about, you can do it in just a few seconds.

You can add the person to your contacts, and you'll see them in your phone's notification center.

If you want to have a video call, you can choose to do it with one of your contacts.

You can send photos and videos.

You can also make free voice and video calls.

You can send messages to anyone in the world, and you can also call anyone.

You can also add your contacts to your phone's contact list.

How can I send WhatsApp messages to more people?