Enter the verification code you receive and click Continue. Two-factor authentication should now be enabled with the Security screen showing that it's turned on.

If your GMB (Google My Business) account got suspended upon entering verification code, please read this article before requesting reinstatement.

Enter a phone number you can use to receive verification codes, and choose if you want to get text messages or calls. Enter the code that’s sent you to right away to finish up.

Now, each time you log into the account you've connected with Google Authenticator, the account will ask you to enter a six-digit verification code.

Next, enter your mobile number carefully and then select [Add]. Sony will then text you a verification code. Simply enter this to authorise your mobile number to receive 2SV texts.

If it's a setup key you're given, go to Settings -> Passwords, select the account from the list, then tap Set Up Verification Code.... Finally, tap Enter Setup Key in the pop-up menu and enter the ...

You can verify your YouTube account with a phone number to upload videos longer than 15 minutes and customize thumbnails. Here's how to do it.

Apple’s two-factor authentication autofill feature makes it painless to enter verification codes sent via SMS, but phishing attackers are getting savvy to this.