Facebook 2-layer security or 2FA Facebook is currently an advanced way to secure your Facebook account, with many types of 2-layer security for us to choose from. Accordingly, you can turn on 2FA Facebook by text message, authentication application or use a physical card for Facebook 2-layer authentication. So depending on each person's convenience, you can choose Facebook 2-factor authentication. The article below will guide you to turn on Facebook 2-step verification.
1. How to turn on 2FA Facebook using SMS
Step 1:
At the Facebook application interface, click on the item Settings & privacythen we click Settings section.
At this point, the user will click next Password and security section for further setup.


Step 2:
Next, in the 2-factor authentication section, click on it Use 2-factor authentication to enable 2FA code generation for Facebook via SMS. Now we will click on item Tprint text messages (SMS).


Step 3:
Switching to the new interface, users will enter phone number received the Facebook 2-factor authentication code Click Confirm below.
After entering the phone number, you will receive a confirmation code to enter the Facebook interface as shown below.


So you have activated Facebook 2-layer authentication via SMS. When logging into Facebook, we will receive a 6-digit code sent to the registered phone number.
Step 4:
In the 2-Factor Authentication interface, you will have the option to use a backup Facebook security plan when Facebook fails to receive the verification code.
Such as Use recovery code With the codes below you can save them.


Step 5:
To Turn off Facebook authentication via SMS then you Click Off. Enter Facebook password to confirm the operation.
Finally, you will no longer be able to use Facebook's 2-layer security via text messages anymore.
2. How to authenticate Facebook with 2 factors using the application
Facebook has added 2-layer security to Facebook, 2FA authentication for Facebook with Duo Mobile and Google Authenticator authentication applications, in case you do not want to use your phone number, hiding Facebook personal information.
Step 1:
You download the Duo Mobile or Google Authenticator application and then create a user account.
Step 2:
We also click on Use 2-factor authentication and then select the method Authentication application.
Step 3:
At this time displays QR code So we can use the authentication application to scan this QR code, or enter the code below into the authentication application.
If you install the authentication application on the same device as Facebook Click Setup on the same device. Open the authentication application via Facebook.


Step 4:
You will now see one verification number series in the authentication application to Enter the Facebook interface. Once you've entered it, you're done Turn on Facebook 2-factor authentication using a verification app.
To turn off Facebook's 2-layer security using the application, you can also click Turn off to do it.


3. Instructions for 2-layer security on Facebook with a security key
To use this method, you need to prepare a physical security key connected to your phone and then proceed with setup. Then you don't need to enter a code, the physical security key will confirm.
Press Register a security key to perform. Next, you install and activate the security key to enable Facebook 2FA.


4. Instructions for creating Facebook 2FA code using PC application
We will also download two Duo Mobile and Google Authenticator applications to perform on the computer if desired.
Step 1:
You click on the item Secure and log in on Facebook PC.
Next, look at the content on the right to find the section 2-factor authenticationthen tap options Use 2-factor authentication.
Step 2:
Click the button Begin to perform Facebook security with 2-factor authentication.
The system will now ask the user to re-enter Facebook password.
Step 3:
2-factor authentication on Facebook currently has 2 ways via SMS text message to phone number, or via authentication application. Click to select Authentication application then press the button Next under.
Step 4:
At this point, the user will be notified to use one of the two Duo Mobile and Google Authenticator applications to enable authentication. We will have 2 ways to proceed with setup via a third-party authentication tool, via QR code or entering an authentication code. Click the Next button.
Step 5:
Now open the application installed on the device, here is Google Authenticator, click Start setup. We will then be able to choose how to set it up. To scan the QR code, click Scan Barcode. If you want to enter a code, click Manual entry.
Step 6:
You need to agree to the application Access the camerapress OK. Then just take the camera scan QR code to proceed with setup. We will immediately receive it access code. The code will have an expiration date. When the time expires, the code will be changed to another code.
Step 7:
Good Enter the code on the Google Authenticator app Go to this interface of Facebook.
When entered correctly, you will receive a notification 2-factor authentication is on and you have successfully secured Facebook's 2-layer security through the authentication application. Users will have 1 week of code-free login, and you can choose to turn it on or off.
Step 8:
If delete method Other authentication applications press Delete the application.
Facebook will ask if you are sure to delete the authentication application, click Delete.
Step 9:
To Completely turn off Facebook's 2-layer security elementclick Off button above the interface.
Final Press Off To determine not to use 2-factor authentication on Facebook, that's it.
5. Log in to Facebook if you cannot enter the code
As mentioned, when activating this feature, you will receive a second code via phone message. We must enter this code to log into our account. So what should you do if you don't have your phone and can't enter the security code?
Step 1:
First of all, you also access the Security and login section on Facebook. Find the section Use 2-factor authenticationyou will see Recovery code, click Get code.
Step 2:
If asked, re-enter your Facebook account password. Immediately after that, the dialog box interface appears Login Approval Code. We will see 10 random code snippets that we can use to log into our Facebook account, in case you don't have a phone to enter the confirmation code. It's best to save all 10 codes above, in case you don't receive the security code or don't have your phone with you.