WhatsApp SMS Verification
WhatsApp requires SMS verification for every new account. Meta filters VoIP ranges aggressively — SMSTwins provides real SIM-backed numbers with parsed 6-digit OTP delivery and automatic refunds on failed routes.
WhatsApp sends a 6-digit SMS code during registration and number-change flows.
How WhatsApp verification works
- 1. Create an account — Sign up and top up your SMSTwins balance (card or crypto).
- 2. Select WhatsApp — Choose your country; live stock and price shown before purchase.
- 3. Enter the virtual number — Paste it into WhatsApp during signup or the verification prompt.
- 4. Receive your OTP — Code appears in your dashboard, API, or webhook — parsed automatically, no manual SMS reading.
Why non-VoIP numbers matter
WhatsApp maintains blocklists against internet-telephony prefixes. Numbers from Google Voice, TextNow, and generic VoIP pools fail frequently. SMSTwins non-VoIP routes align with what Meta expects from mobile subscribers.
Tips for reliable delivery
- Align country selection with your target market — US numbers for US-centric accounts perform best.
- WhatsApp Business uses the same SMS OTP flow as the consumer app.
- Enable two-step verification in WhatsApp after SMS verification for stronger account security.
Popular countries for WhatsApp
Browse regional routes with pricing hints. Availability varies — check live stock at activation time.
Automatic refunds & pricing
Activations last 30 minutes. If no SMS arrives, your balance is refunded automatically — no support ticket needed. You can also cancel manually after 1 minute if you need to switch country. Loyalty rank discounts apply to your purchase price on all activations.
Frequently asked questions
- Will WhatsApp accept a virtual number?
- WhatsApp accepts mobile-capable numbers. Non-VoIP virtual numbers from real SIM infrastructure work reliably; VoIP prefixes are commonly rejected.
- Can I use one number for WhatsApp and WhatsApp Business?
- No — each app binds one account per phone number. Request separate SMSTwins activations for consumer and Business accounts.
- How long do I have to enter the WhatsApp code?
- Enter the OTP promptly in WhatsApp. Your SMSTwins activation stays open for 30 minutes; automatic refunds apply if no SMS arrives in that window.
In-depth guide
Step-by-step troubleshooting, API examples, and country selection advice for WhatsApp.
Read the WhatsApp guideDevelopers & QA teams
Automate WhatsApp verification with the SMSTwins REST API — request a number, capture OTP via webhooks, and cancel after tests. Never use personal SIMs in CI pipelines.
Separate API keys per environment. Rate limits scale with your loyalty rank (60–600 requests per minute).