HOW TO VERIFIED YOUR MOBILE NUMBER STEP BY STEP IN BLOCKCHAIN ACCOUNT. 2-Step Verification (commonly known as two-factor authentication, or 2FA) acts as an extra layer of security for your wallet.
When logging in you will need both the wallet password plus a one-time passcode (OTP) generated by your chosen method of 2FA: Google Authenticator, Yubikey, or SMS codes.
Go to your wallet’s Security section to set up 2FA. Under the Two-Step Verification section, click Enable and choose which option you want to set up.