Guide · updated November 2026

Verification code expired: why it happens and how to fix it

By the Noir SMS team3 min read

Quick answer

Most SMS codes expire after a few minutes, often 5 to 10, and only the latest code you requested is valid. If you see "code expired" or "invalid code", request a new code and type the most recent one quickly. Don't request many codes in a row, or the app may make you wait. With a Noir SMS number, you can request another SMS from the same service while the number is active, for free.

Codes are short-lived by design: a stolen code is only useful for minutes. That also means a slow typing session can trip you up.

Common causes

  • You typed an older code after requesting a new one.
  • Too much time passed between receiving and entering it.
  • Your device's clock is wrong (matters more for authenticator codes).

Fixing it

  • Request a fresh code once.
  • Enter the newest code within a minute or two.
  • If you get a cooldown message, wait it out instead of tapping resend.

On a Noir SMS number

All SMS on the number appear in the dashboard, newest first. Use the latest one. If the app sends nothing new, the number may have hit the app's resend limit; wait and try again while the number is active.

Frequently asked questions

How long are WhatsApp codes valid?

For a limited time and only until a new one is requested. Use the most recent.

Can an expired code be reused?

No. Expired and older codes are rejected.

Services in this guide

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