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How to use flash calls as automatic verification on WhatsApp

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The ability to use flash calls is an alternative method to log into WhatsApp without manually entering a 6-digit code because the process is almost automatic. In this article, we explain what flash calls are and how to use them on WhatsApp beta for Android.

Common questions Answers
Name of the feature? Flash calls
Status? Available
Compatibility? Latest versions of WhatsApp for Android are marked as compatible.
My version of WhatsApp is up to date but I don’t have this feature. Why? All versions of WhatsApp for Android are compatible. Please check if the permission to read the call history has been revoked by mistake.
Previous news? WhatsApp news of the week: hide online status and reactions

FLASH CALLS

Last year, we published an article about flash calls, an automatic verification method over call to log into WhatsApp without using the 6-digit verification code. Thanks to flash calls, WhatsApp will call your phone number and then immediately end the call: if the last phone number in your call history is the same phone number that should call you to give a 6-digit code, WhatsApp will automatically log into your account.

As you can see in this screenshot, when you try to log into WhatsApp and you do not receive a 6-digit code via SMS for some reason, you can choose to receive a call. In this case, you can also choose to enable flash calls to make the process automatic, but it is needed to allow WhatsApp to read your call history in order to enable the feature. This process is very safe since the phone number that should call you is always different, so it is not possible to trick this feature to log into different WhatsApp accounts. In addition, WhatsApp won’t use your call history data for other purposes and this feature won’t be used in other situations.
Unfortunately, this alternative method is only available on WhatsApp for Android since iOS does not provide a public API to let app read the call history.

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