WhatsApp two-step verification is an optional feature that gives your account more security. Once you have enabled 2-step verification, any attempt to verify your WhatsApp phone number will require the 6-digit password you created using this feature.
Enable two-step verification of WhatsApp
To enable 2-step verification, open WhatsApp > Settings> Account> 2-step verification> Activation .
By enabling this feature, you can also optionally enter an email address. This WhatsApp email address allows you to email a link to disable 2-step verification if you forget your 6-digit password, and also helps protect your account. We do not verify this email address. We strongly recommend that you provide an accurate email address so that you can continue to use your account if you forget your password.
Important : If you received an email to disable two-step verification that you did not request, do not click on the link. Someone else may want to verify your WhatsApp phone number .
If you have enabled 2- step verification , your number will not be allowed to be verified again until 7 days after the last unsecured use of WhatsApp . Therefore, if you have forgotten your password and have not provided an email to disable 2- step verification , you will not be allowed to re-verify WhatsApp until 7 days after your last use of WhatsApp . After these 7 days, you will be allowed to confirm without password in WhatsApp, but by re-confirming, you will lose all pending messages – will be deleted. If your number is re-verified without password 30 days after the last use of WhatsApp, your account will be deleted and a new account will be created after successful re-verification.
Note : WhatsApp will periodically ask you to enter your password to help you remember your password. There is no way to prevent this without disabling 2- step verification .