Facebook Not Sending SMS Code? What to Check Next

When Facebook is not sending an SMS code, start with what triggers one. Facebook asks for a login code or a confirmation each time someone signs in from a browser or device it does not recognize. Check that the mobile number on the account is current and reachable, keep recovery login codes for when your phone is unavailable, and open Facebook's two-factor troubleshooting article.

Why does Facebook ask for a login code?

Facebook asks for a code when two-factor authentication is on and a login comes from somewhere it does not know. The Facebook Help Center page on two-factor authentication says you'll be asked "to enter a special login code or confirm your login attempt each time someone tries to access your Facebook from a browser or mobile device we don't recognize."

You will not always get a text. Depending on your security method, Facebook may ask you to confirm the attempt instead. SMS is one of three methods: the same page says that when you turn on two-factor authentication, "you'll be asked to choose one of 3 security methods," and one of them is "using text message (SMS) codes from your mobile device."

Why does Facebook ask for codes so often?

Browser settings are the usual reason. Facebook's help page states: "If you've turned on private browsing or set up your browser to clear your history every time it closes, you may need to enter a security code each time you log in."

The consequence is simple. More logins that need a code means more texts, so any delay in delivery shows up more often. If you log in from the same browser every day and still get asked each time, check whether private browsing or history clearing is turned on.

Which number does Facebook send the code to?

Facebook sends SMS codes to the mobile number set on your two-factor authentication. Facebook says: "For text message (SMS) two-factor authentication, you can either add a new mobile number or use a number that's already been added to your account." If that number is old, ported away, or on a SIM you no longer carry, the code goes there and not to you.

Facebook gives this path for managing two-factor authentication once you are logged in:

1. Click your profile picture in the top right, then click Settings and privacy.
2. Click Settings.
3. Click Accounts Center, then click Password and security.
4. Click Two-factor authentication, then click the account you want to update.
5. Choose the security method you want to add and follow the on-screen instructions.

The path needs an active session. Check the number now, while you can still log in, so a lost code does not become a lost account.

What should you do when the Facebook code does not arrive?

Work through the parts you control first:

• Confirm the phone can receive texts. The SIM in your phone should be the number on file, and other SMS should be arriving normally. The general causes of missing codes across services are in not receiving verification codes.
• Use a recovery code if you saved one. Facebook says: "You can get 10 recovery login codes to use when you're unable to use your phone."
• Review your security method once you are logged in. Use the path above to confirm the number, or to add a new one.
• Open Facebook's troubleshooting article. The two-factor help page links to a separate article: "Learn what to do if you have trouble logging in with two-factor authentication."

Does the number on file need to outlive your Facebook account?

The number on file needs to stay yours for as long as the account sends codes to it. A number that lapses, gets recycled, or sits on a SIM you stopped using sends every future code to someone else, or to nowhere. Before you add a number to two-factor, ask how long you will hold it. Save recovery codes as the backstop.

Where does a VoidMob number fit?

VoidMob: mobile proxies on real 4G/5G devices, non-VoIP SMS verification and eSIM. Every SMS number is a non-VoIP carrier number. A VoidMob number gives you a place to receive codes for an account you own. It does not change when Facebook decides to send one.

The three tiers hold a number for very different lengths of time, and that matters for two-factor:

On the one-time tier, Facebook codes start at $1 as of November 2026. The 15-minute window can receive several codes. If no SMS arrives in that window, the rental cancels and refunds in full automatically. Services marked non-refundable are the exception. Once a code has been delivered, the rental cannot be refunded. Live prices are on the Facebook SMS verification page.

For a number you put on file for two-factor, a dedicated line is the closer match because it stays reserved to you month after month. A dedicated US number is $19.99 a month as of November 2026, and the other countries are on the dedicated numbers by country page. If auto-renew is off and the period lapses, the number stops being yours, and the codes go with it.

The trade-off between a kept number and single-use codes is covered in dedicated non-VoIP numbers vs OTPs. For the longer version of why carrier numbers matter for verification, see the WhatsApp Business guide to non-VoIP numbers.