What is sign up/O.G email address for instagram

Yeah I know what singnup/O.G email address means. But it is the only case when the account got signed up/registered using a email address.

What if an account got registered using a mobile number ?? What will be the sign up email in these two cases …!!

  1. Only used number to sign up and never added any email.

  2. Registered using a number but later added an email address.

Can someone answer @Administrators

I was under the impression that an email address is required to sign up for Instagram…?

No we could create via mobile number too…

We are not sure how recoveries work from the original phone number, we never bother looking into it as it was never a problem.

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Well this is how it works :hushed:…!!