To register in WhatsApp We only need to receive an SMS or call with the service activation code on our mobile phone to verify that this phone number is ours, a security measure that WhatsApp does not think is enough now, since they have just presented the new two-step verification.
From now on through the beta version we can already activate the two-step verification for our safety. Now after the activation code that WhatsApp sends us, the identification process will not end until we enter our own six digit code.
WHATSAPP Tips and tricks to HIDE YOURSELF TO THE MAXIMUM and keep your PRIVACY
To activate the verification in two steps of WhatsApp we have to go to Settings> Account> Two-Step Verification. There we just have to follow the steps to put our six-digit code and our email account in case we forget the code.
After entering our two-step verification code, the next time we register our number we will have to enter our code during the activation wizard. If we have forgotten the code and we do not have an associated email, we will not be able to register on WhatsApp until seven days have passed. After seven days we will be able to register without the two-step verification code, but we will not receive all the pending messages to receive. If more than 30 days pass without registering with the verification code, the account will be restarted and we will start as a new user.
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In Google Play | WhatsApp