Flash Calling is a method of activating WhatsApp without a verification code that merges the two existing methods of account verification using the code received via SMS or voice call. It’s called that because WhatsApp calls the user’s number and automatically ends the call, by checking if it is recorded as the last digit in the call log: if it matches the number to call to provide the 6-digit code, the account will be logged in automatically. In other words, it is not even necessary to answer the call. To use this method, WhatsApp asks for permission to access the log.
How to activate a WhatsApp account with a flash call
If you’re trying to log into WhatsApp and for some reason you didn’t receive the 6-digit code via SMS, you can choose to receive a call or to receive a flash call. In the latter case, you need to enable permissions to allow the app to read the call log. You can do this in two ways: by accepting them when you open the app, or by going into settings and checking for those permissions manually.
Permission for WhatsApp to access call logs
To verify a phone number with a flash call, follow these steps:
- Grant access permissions to the call log.
- Wait for the call to be made and for WhatsApp to verify that the incoming call is from the number you want to make the call.
As far as privacy is concerned, an aspect that worries many users, WhatsApp guarantees that this function will only and exclusively be used in this situation, so in principle there is no need to fear that it will spy on the calls received or made.