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If your agent already has an Eva voice number, that same number can receive WhatsApp. Meta verifies the number is yours by calling it, and Eva answers that call and shows you the code.

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What you will get

Your Eva voice number connected to WhatsApp as well, with no second number to buy and no phone in the middle.

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Requirements

  • An Eva voice number on the agent, with calls switched on. If they are off, Eva offers the Turn calls on link in that same answer.
  • About 30 uninterrupted minutes: that is how long the verification window lasts.
  • Access to the account that manages your business in Meta.
Your Eva voice number does not receive SMS messages. When Meta offers you a verification method, choose the call. If you choose the text message, the code never arrives.

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Connect the number

1

Open WhatsApp in your agent

In AI Agents, open the agent, go to Channels and on the WhatsApp card select Connect. If you arrive from Voice phone, Eva already has the right answer picked.
2

Pick your voice number

The answer shows your number in parentheses. The instruction to choose the call appears underneath; select Use my Eva number.
3

Enter the name your customers will see

Before Meta opens, Eva shows Name your customers will see on WhatsApp. You can edit it, and it stays visible while the connection finishes.
4

Choose Use a new or existing WhatsApp number

In the Meta window, choose Use a new or existing WhatsApp number.
5

Choose Call

Choose Call. If Meta only shows SMS because you already requested a code, wait for the countdown and choose Change method → Call. Your voice number does not receive SMS.
6

Wait for the code in Eva

Meta will call your number. The code appears on its own in a large floating card that stays visible inside Eva, about 30 seconds after the call starts. Copy it with Copy code, or select it and copy it manually. The card cannot appear over Meta’s own window; return to Eva to read it.
7

Paste the code into Meta's window

Copy it and paste it into the Meta window to finish the registration there.
The connection and the name are separate reviews. While Meta reviews the name, Eva shows Requested name with the name you asked for and Meta is reviewing it; the number can stay connected while you wait for that result.
While the window is open, that number does not answer customer calls: whoever calls hears a temporary message. As soon as you finish, the number answers as usual again.

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How to know it worked

The number appears on your agent’s WhatsApp card with its status. Send a WhatsApp message to that number from another phone and confirm the conversation reaches the Inbox. Call that number too, to confirm calls are back to normal.

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If something goes wrong

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Meta called and no code appeared

Eva says so on screen: “We couldn’t read the code. We’re looking into it”. Wait out the 10 minutes on the counter — the code often still appears. After that, request another code in Meta and choose the call again.

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Meta closed its window

This happens when Meta cancels its own step and leaves a blank window behind. Eva says so: Meta closed its window at step …, with a Connect again button. Use it: Eva opens a fresh window and Meta calls once more. Your previous code no longer works, because it belonged to the window Meta closed.

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Time ran out

The window lasts 30 minutes. Eva shows Try again so you can open a new window without leaving the screen; if you already closed the Meta window, start again from Use my Eva number.

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Eva says calls are switched off

Meta verifies by calling, so a number with calls off cannot finish. Use the Turn calls on link in that same answer and try again.

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Eva stops after three attempts

Eva closes the window and offers Contact support next to Try again. Write to us with the number and the time and we’ll look at it with you; if you’d rather retry, choose the call from the very first screen.

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Next steps