Viber activation code not received: what to try
In short
- Enter the number in international format: country code, then area code without its leading 0, then the number.
- Viber sends the code by SMS or by a call; for a flash call, the code is the last four digits of the calling number.
- Viber limits activation attempts: after too many, wait 24 hours.
Viber activates your account with a code sent to the phone number you register.
Check the number
Viber wants the international format: your country code, then the area code without any leading zeros, then the number. Viber also says internet-based phone numbers can’t be used to register.
SMS, call or flash call
Viber sends the code by SMS or by an automated call. If the text doesn’t come, tap Activate via call or Resend code. With a flash call you don’t answer: the code is the last four digits of the number calling you.
Signal and roaming
Switch between Wi-Fi and mobile data, and check the phone can receive normal texts. Abroad, you may need to turn data roaming on for a while.
Limits and blocked numbers
Viber limits activation attempts; after too many, wait 24 hours. An “Activation failed” message means Viber has restricted the number for a time, which can happen with numbers that belonged to someone else before.
Using a one-time number
A number from ReserveSMS receives texts only, so choose the SMS code, not a call or flash call. Whether Viber sends to a number is up to Viber; if no code arrives within 20 minutes, the money goes back to your balance. Get a number for Viber.
Common questions
What format does Viber want for my number?
International: the country code, then the area code without leading zeros, then the number.
What is a Viber flash call?
A call you don’t answer. The activation code is the last four digits of the number that called you.
Viber says “Activation failed”. Why?
Viber has restricted the number for a time. It says this can happen with recycled numbers; contact Viber support if you think it’s a mistake.