You may use WhatsAppto make voice calls in addition to sending text messages. There will be no charges or minutes utilized by your cellular plan because calls are made through the Internet. Voice calls, on the other hand, will consume data from your data plan if you are not connected to a Wi-Fi network.

To begin a voice call, press the following buttons: 
There are a few simple methods for making voice calls.

• Tap the call button in the top-right corner of the screen to open the conversation of the person you want to call.
•  Go to the bottom of the screen and tap the Contacts tab, then tap the name of the person you want to call. The contact details for that person will show. By pressing the call button, you can make a phone call.
• Go to the Calls tab and tap the name of the person you'd want to call if you haven't previously.

All three techniques will initiate a conversation with the person you've chosen. You're good to go after that person accepts the call. By tapping the respective buttons, you can mute the call, send a message, and activate the speaker. Simply touch the end call button after you're finished with the call.

To answer an incoming call:

When someone contacts you using WhatsApp, it will look like a regular phone call, but the words WhatsApp Audio will appear somewhere on the screen. Our screenshot was taken on an iPhone, so it may seem different depending on the device you're using. To accept the call, simply tap or slide the answer button.