If you see two green circles next to the contact’s name in your WhatsApp chat list, it means they are currently on a video call with someone else.

Yes, WhatsApp will show online when on a call. The app will also show the caller’s name and phone number.

If the person you are trying to call is on another call, WhatsApp will ring once and then go to voicemail.

Yes, you can see a list of all the people that a particular WhatsApp user is chatting with. To view this list, open WhatsApp and go to the Chats screen. Tap the Menu button (three lines in the top-left corner) and select Chat Settings. Under “Who Can Chat With Me?” tap My Contacts.

Yes, WhatsApp calls on Truecaller. Truecaller is a phone directory that helps you identify and block spam calls. It also allows you to make calls and texts without revealing your phone number.

Yes, it is possible to trace WhatsApp calls. WhatsApp calls are not encrypted, so they can be traced.

There are a few ways to tell if someone is busy on another call. One way is to look at their body language. If they are hunched over or have their hand over the mouthpiece, they are likely talking on the phone. Another way is to listen for background noise. If you can hear other people talking, then the person you are trying to reach is likely busy on another call.

If someone declines your WhatsApp call, you’ll see a notification that says “Call declined.

There are a few ways to know if someone is calling while on another call. One way is to check your phone’s call history. If the other call appears as “private” or “unknown,” then it’s likely that the person was calling you while you were already on a call. Another way to tell is by looking at your phone’s caller ID.