To avail the feature, the users will have to download the WhatsApp Messenger (version 2.11.561) from the Google Play Store.

The voice-calling can be activated by receiving a call from someone whose voice-calling is already activated. After you get the call, you need to close and then reopen the app. After that, instead of seeing the most recent chats, you will get three tabs namely Calls, Chats and Contacts.

READ MORE: Whatsapp introduces voice calling feature for Android users

WhatsApp, which is attracting around 70 million monthly users, can add another edge to its user base in India with this add-on feature.

Android smartphone users will be able to use the feature and company has stayed any word on whether and when it will be released for iOS and other users.

Beware: WhatsApp's invitation for voice calling feature might be a malware

WhatsApp's voice calling feature had went live a few times before but was quickly shutdown. Users will get to know if voice calling is active on their account if the main UI automatically gets updated which will feature three different tabs where one will be allocated for calls, a second for chats and a third for the contacts list.

Nevertheless, users shall stay cautioned from the random invites for enabling the voice calling feature as they can be a spam.

Here are some tips on how to use the new WhatsApp voice-calling feature:

1. An Android user of WhatsApp needs to wait for getting a private invitation on his or her app.

2. Mostly, WhatsApp users with version 2.11.528 (from Play Store) or 2.11.531 (from website) are reportedly getting invites for the feature

3. Once getting the add-on voice calling feature, you can pass the invitation to your friends, suggests WhatsApp

4. You need to make a call through WhatsApp to send an invitation to friends for unlocking the voice-calling feature

5. Update the current version of your WhatsApp, you may get the invite sooner