How Do I Add or Remove a Phone Number or Email for Security in the Facebook App? (2026 Guide)

By App World Team · Updated August 2026 · 10 min read

Your phone number and email address are the two most important pieces of contact information tied to your Facebook account. They're what Facebook uses to verify it's really you logging in, to send two-factor authentication (2FA) codes, and to help you recover your account if you ever get locked out. Because of that, knowing exactly how to add, remove, or update them is one of the simplest — and most overlooked — ways to protect your account from hijacking, phishing, and SIM-swap attacks.

In this guide, we'll walk through exactly how to add or remove a phone number or email for security in the Facebook app in 2026, using Meta's current Accounts Center interface, plus troubleshooting tips for when the process doesn't go as planned.

Table of Contents

• Why Your Phone Number and Email Matter for Facebook Security
• Where to Find Contact Info: Meta Accounts Center
• How to Add a Phone Number in the Facebook App
• How to Remove a Phone Number in the Facebook App
• How to Add an Email Address in the Facebook App
• How to Remove an Email Address in the Facebook App
• Doing This on Desktop Instead of the App
• Setting a Primary Email or Phone Number
• How This Connects to Two-Factor Authentication
• Troubleshooting Common Problems
• Best Practices for Facebook Account Security
• Frequently Asked Questions

Why Your Phone Number and Email Matter for Facebook Security

Facebook (and its parent company, Meta) relies on your contact information for three core functions: identity verification, account recovery, and security notifications. If someone tries to log into your account from an unrecognized device, Facebook can send a code to your phone or email to confirm it's really you. If you forget your password, that same phone number or email is what lets you reset it. And if your account is ever compromised, having an up-to-date recovery contact is often the only way to get it back.

This is also why outdated contact information is a real risk. If you change your phone number and never update it on Facebook, you could lose access to your account entirely during a security check. On the flip side, leaving an old, unused phone number attached to your account — especially one you no longer control — can give an attacker a way to receive your verification codes if that number gets reassigned to someone else by your carrier. Keeping this information current isn't just housekeeping; it's an active part of account security.

Where to Find Contact Info: Meta Accounts Center

Since Meta rolled out its unified Accounts Center, all contact information — phone numbers, email addresses, and linked profiles across Facebook, Instagram, and Messenger — now lives in one place instead of being scattered across separate "Settings" pages. If you've used Facebook for a while and remember a "Contact Info" tab under "General Account Settings," that layout has been replaced. The current path inside the Facebook app is:

Facebook app → Profile icon (top right) → Settings & privacy → Settings → Accounts Center → Personal details → Contact info.

Everything below builds on this path, so it's worth bookmarking this section mentally before you start.

How to Add a Phone Number in the Facebook App

Adding a phone number gives Facebook another way to verify your identity and is required if you want to use SMS-based two-factor authentication. Here's how to do it from the mobile app:

1. Open the Facebook app and tap your profile picture in the top-right corner.
2. Tap Settings & privacy, then tap Settings.
3. Scroll down and tap Accounts Center.
4. Tap Personal details, then tap Contact info.
5. Tap Add new contact, then choose Add mobile number.
6. Enter your phone number, select which account(s) in your Accounts Center you want it linked to, then tap Next.
7. Facebook will text you a confirmation code. Enter that code when prompted to verify the number.
8. Once verified, the number appears in your Contact info list and can be used for login, recovery, and 2FA.

Facebook may ask you to re-enter your password before the number is saved, particularly if you're adding it as a new recovery method rather than just updating an existing one.

How to Remove a Phone Number in the Facebook App

Removing a phone number is just as simple, but Facebook wants to make sure you're not accidentally locking yourself out, so it will usually confirm you have another way to recover your account first.

1. Go to Settings & privacy → Settings → Accounts Center → Personal details → Contact info.
2. Find the phone number you want to remove and tap it (or tap the three-dot menu next to it, depending on your app version).
3. Tap Remove number or Delete number.
4. Confirm the action when prompted. You'll usually need to re-enter your Facebook password to finish.
5. Tap Delete or Remove again to confirm.

Important: if this phone number is your only recovery method or is currently set as your two-factor authentication method, add a replacement email address or authentication app before you remove it. Never delete your last remaining contact method — doing so can make it much harder to regain access if you're ever locked out.

How to Add an Email Address in the Facebook App

Adding a second or replacement email is useful if you're switching from a personal to a work email, want a dedicated recovery address, or simply want a backup in case your phone number becomes unreachable.

1. Open Settings & privacy → Settings → Accounts Center → Personal details → Contact info.
2. Tap Add new contact, then choose Add email address.
3. Type in the new email address and select the account you want it linked to.
4. Tap Next. Facebook will send a 6-digit confirmation code to that inbox.
5. Switch to your email app, copy the code, and enter it back in the Facebook app to verify.

Once verified, the new email appears alongside any existing ones in your Contact info list. Facebook lets you keep multiple emails on file, but only one can be marked as your primary email at a time (more on that below).

How to Remove an Email Address in the Facebook App

If you have an old, inactive, or unwanted email address attached to your account, here's how to delete it:

1. Go to Settings & privacy → Settings → Accounts Center → Personal details → Contact info.
2. Tap the email address you want to remove.
3. Tap Delete email, then tap Delete to confirm.
4. You may be asked to re-enter your Facebook password. Enter it and tap Submit, then Close.

As with phone numbers, Facebook won't let you remove your only remaining contact method if it would leave your account with zero ways to verify identity or recover access. Add a replacement first if this is your last email or phone number on file.

Doing This on Desktop Instead of the App

The steps are nearly identical on desktop, and it's often easier to type an email address or read a confirmation code on a bigger screen:

1. Log in to Facebook at facebook.com.
2. Click the down arrow in the top-right corner and select Settings & privacy → Settings.
3. In the left-hand menu, click Accounts Center.
4. Click Personal details → Contact info.
5. Add or remove a phone number or email using the same options described above.

Setting a Primary Email or Phone Number

If you have more than one email or phone number saved, Facebook uses whichever one is marked as "primary" to send login alerts, password reset links, and other security notifications. To change it:

1. Open Contact info in the Accounts Center as described above.
2. Find the email or number you want to make primary.
3. Tap the three-dot menu next to it and select Make primary (wording may appear as "Set as primary" depending on your app version).

It's a good idea to review this setting whenever you add a new contact method, since an outdated primary email means security alerts could be going to an inbox you rarely check.

How This Connects to Two-Factor Authentication

Two-factor authentication (2FA) adds a second verification step — a code sent by SMS, generated by an authenticator app, or confirmed on a trusted device — every time someone tries to log into your account from a new device or browser. Your phone number and email are directly tied to how 2FA works:

• If you use SMS-based 2FA, removing the associated phone number will disable that method until you add a new number or switch to an authenticator app.
• If you use an authenticator app for 2FA, your email still matters as a backup recovery channel.
• To review or change your 2FA method, go to Accounts Center → Password and security → Two-factor authentication, select your Facebook profile, and choose between an authentication app, SMS, or a security key.

Security experts widely recommend using an authenticator app (such as Google Authenticator or a password manager's built-in authenticator) over SMS-based 2FA when possible, since SMS codes can be intercepted through SIM-swapping. Still, having a verified phone number on file remains useful as a fallback recovery option.

Troubleshooting Common Problems

"Facebook won't let me remove my phone number or email"

This usually happens for one of three reasons: it's your only contact method on file, it's currently set as your 2FA method, or it's marked as primary. Add a replacement phone number or email first, switch your 2FA method if needed, and then try removing the old one again.

"I'm not receiving the confirmation code"

Double-check that you entered the number or email correctly. For SMS codes, confirm your phone has signal and isn't blocking short codes; for email codes, check your spam or promotions folder. If the code still doesn't arrive after a few minutes, request a new one rather than reusing an expired code.

"An old phone number keeps reappearing on my account"

This can happen if the number is cached in a backup recovery flow or if you're logged into an old app session. Try clearing the Facebook app's cache, logging out and back in, or completing the removal process from a desktop browser instead of the app.

"I lost access to both my old phone number and email"

If you can't verify through either contact method, use Facebook's account recovery flow at the login screen and select "Forgot password?" or "Need another way to log in?" Facebook may ask for a government ID or trusted contacts to confirm your identity in this scenario.

Best Practices for Facebook Account Security

• Keep at least two verified contact methods on file — one phone number and one email — so you always have a backup.
• Update your number before you cancel your old SIM. Add the new one first, then remove the old one, rather than the other way around.
• Enable two-factor authentication, ideally through an authenticator app rather than SMS alone.
• Turn on login alerts under Accounts Center → Password and security, so you're notified of sign-ins from unrecognized devices.
• Review connected apps and websites periodically and remove any you no longer use, since each one is a potential access point to your data.
• Use a unique, strong password for Facebook that isn't reused on any other site, ideally managed through a password manager.
• Be cautious of phishing emails claiming to be from Facebook that ask you to "verify" your account through a link — always navigate to Facebook directly instead of clicking email links.

Frequently Asked Questions

Can I remove my phone number from Facebook without adding an email first?

Only if you already have a verified email address on file. Facebook requires at least one working contact method at all times, so if your phone number is your only recovery option, you'll need to add an email before you can remove it.

Will removing my phone number delete my Facebook account?

No. Removing a phone number only disconnects it as a contact method — it does not delete or deactivate your account. Your profile, posts, and friends remain exactly as they were.

Does changing my email affect my Facebook login?

If you log in using an email address, changing it means you'll need to use the new email (or your phone number, if one is on file) the next time you log in. Your username, if you have one, and password remain unchanged.

Can other people see my phone number or email on Facebook?

By default, your contact info visibility is controlled separately under privacy settings. You can restrict who can look you up using your phone number or email under Settings & privacy → Settings → Audience and visibility → How people find and contact you.

How long does it take for a phone number or email change to apply?

Changes typically apply immediately once you've entered the confirmation code. In rare cases, it can take a few minutes to fully sync across the Facebook app, Messenger, and Instagram if your accounts are linked in the same Accounts Center.

This guide reflects Facebook's Accounts Center interface as of August 2026. Meta periodically updates its settings layout, so menu names may shift slightly over time — the underlying steps of adding a replacement contact method before removing an old one remain a reliable approach regardless of interface changes.