Verification Code Sent by Call Instead of SMS
Code didn't arrive? Pick an action:
WhatsApp and Viber can verify by voice call or missed call. Most one-time numbers only receive SMS.
What to do
- Wait for the timer and choose "Send SMS".
- If only a call is offered, cancel and take a number from another country.
Which apps call
WhatsApp and Viber most often switch to a call, and some services use a "flash call" where the last digits of the calling number are the code.
How to get SMS instead
Wait for the call timer to finish — apps usually offer SMS again afterwards. Don't pick up "call me" right away if your number can't receive calls.
Questions about this topic
Can a virtual number receive a verification call?
Only if the service supports calls for that app. Most one-time numbers receive SMS only.
What is a flash call?
A missed call where the caller's number contains the code.
Where can I get numbers that receive codes reliably?
Start with the top of the ranking: Tiger SMS, HeroSMS, TextVerified.
Editor's choice for reliable code delivery: Tiger SMS. One-time numbers in 260+ countries from $0.001, and you pay only when the SMS arrives — no code, instant refund to your balance. Get a number →