Two-step verification feature is an immensely powerful security feature of Gmail in particular and Google in general. It help your Gmail account safer and less likely to get hacked.
When you enable 2-Step Verification (also known as two-factor authentication), you add an extra layer of security to your account. You sign in with something you know (your password) and something you have (a code sent to your phone).
Note: When you turn on 2-step verification for Gmail account, it means you also turn on 2-step verification for all other Google services such as Google Plus, Google Maps, Youtube …
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Guidelines of enabling 2-step verification for Gmail
To enable 2-step verification feature, first you need to log in to your Gmail account, then follow these steps:
Step 1: Click on email address.
Step 2: Select Account.
Step 3: Select Security.
Step 4: In 2-step verification tab, click on Setup.
Step 5: Click on Start setup
Step 6: Enter your email password.
Step 7: Click on Sign in
Step 8: Enter your phone number
Note: Under How you should we send you codesitem, there are two options for getting the verification code to enable 2-step verification.
– Text message (SMS): receive code via SMS
– Voice Call: receive code through Google’s automated switchboard. Google’s automated switchboard will call to your phone number and read the code (in English)
Step 9: Having made your choice then click Send code.
Step 10: Gmail will send a confirmation code of 6 numbers for you. Enter this code into the frame Enter the verification code then click Verify
Step 11: Establish reliable computer. If you’re using a personal computer, you can tick into the box Trust this computer so that the Gmail’s login later on this machine will not be required 2-step verification anymore and vice versa.
Step 12: Click Next to continue.
Step 13: Click Confirm to agree to enable 2 – step verification for Gmail.
In case your phone does not receive calls, SMS from Google (phone runs out of battery, damaged, lost …) Gmail offers 10 backup codes. The codes will replace the security code in the 2nd step (can use one of 10 numbers). Please save this backup code to use when you need.
To get the backup codes, select Show backup codes
Step 14: Select Show backup codes
In Print backup verification codes window, Backup verification codes section will show 10 random numbers.
After enabling the “2-step verification” feature successfully, signing in Gmail inbox on a new computer (the computer is not trusted) you will have to follow two steps:
Step 1: Enter your password as usual.
Step 2: Enter the code that Google sends to your phone like the photo below and select Verify to complete the process of logging into your Gmail inbox.
If it’s too long to receive SMS from Google, you can click on the Call your phone ending to receive code by phone call from Google.