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WhatsApp Working on Flash Calls Feature for Quick Log In

WhatsApp is reportedly developing a Flash Call feature that helps users to log into their accounts quickly. When a user tries to log in to WhatsApp, a 6-digit code is sent on their phone for verification. A new alternate method is reportedly being developed, wherein WhatsApp will make a flash call to the user for the purpose of verification. 
This will enable users to log in quicker than the SMS verification process and should prove to be useful once multi-device support is rolled out and users can log in to multiple devices simultaneously.

Through this method, “WhatsApp will call your phone number and then automatically end the call, verifying that the last phone number in your phone's log is equal to the number that gives you the 6-digit code. This phone number is always different, so there is no way to trick this method, ensuring a safe experience.
The flash call feature won't be implemented on WhatsApp for iOS as Apple doesn't offer any public API to read the call history. Also, this feature is optional, and users can continue logging into WhatsApp confirming the 6-digit code received via SMS or call. This flash call feature is under development and is not enabled in beta yet.

Credits: BharaniDharan

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