WhatsApp Business needs its own phone number, separate from any personal WhatsApp account, and one that can receive an SMS or a call when WhatsApp verifies it. For a business the best choice is a number that will still be yours in years: a separate mobile SIM or eSIM, or your existing landline. A one-time number can register the app, but it is the wrong foundation for a number customers rely on.
What WhatsApp Business needs from a number
- A number not used in WhatsApp
- WhatsApp and WhatsApp Business each need a different number.
- Able to get the code
- By SMS, or by call for landlines. Call blocking must be off during registration.
- A supported type
- Mobile numbers and, in Business only, landlines. VoIP, toll-free and premium numbers are not supported.
- Reachable again later
- A new phone or reinstall sends a fresh code to the same number.
WhatsApp at a glance
- Virtual numbers
- Often refused: try another country
- Code sent by
- SMS · phone call
- Code length
- 6 digits
- Asks for the number again later
- Yes
- One number per account
- Yes
Options compared
| Accepted | Stays yours | Good for a business | |
|---|---|---|---|
| Separate mobile SIM or eSIM | Yes, by SMS | While the plan runs | Yes, the most flexible |
| Existing landline | Yes, by call | Yes | Yes, if customers already know it |
| Long-term virtual line from a calling app | Often not: many are VoIP | While you subscribe | Risky |
| One-time number | Sometimes, by SMS only | No, about ten minutes | No |
We do not sell permanent numbers. Our numbers receive one code and then close.
Why a one-time number is risky for a business
- Customers save the number. If the account has to move, every saved contact and printed card points to the old one.
- WhatsApp verifies again on a new phone. With the number gone, so is your way back into the account and its chat history.
- Staff changes mean new devices, and every new device is a moment the number has to work.
- Reviews and trust build on a number people recognise over time.
Where a one-time number does fit: a test account to try the Business features before you commit, or a short campaign you will close afterwards.
If you choose the landline
A landline works only in WhatsApp Business, and the app still runs on a smartphone. The landline just has to answer an automated call with the six-digit code once the SMS timer runs out, now and every time WhatsApp verifies the number again.
The full walkthrough and its drawbacks: WhatsApp with a landline number. Running business and private side by side: two WhatsApp accounts on one phone.
Common questions
Can I use the same number for WhatsApp and WhatsApp Business?
No. Each app needs its own number, so a business number cannot also run your personal WhatsApp.
Can I use a virtual number for WhatsApp Business?
Only if WhatsApp accepts it. It does not support VoIP numbers, and a temporary number lasts minutes, not years.
Can WhatsApp Business use a landline?
Yes. Business is the only WhatsApp app that accepts landlines, verified by a call.
What is the best number for a small business?
One you will keep: a separate SIM or eSIM, or the landline customers already call.
What happens to my business account if I change phones?
WhatsApp sends a new code to the registered number, by SMS or, for a landline, by call. Turn on two-step verification with an email first, and keep a chat backup so history moves with you.