I mean your phone number. WhatsApp finds contacts by phone number, and messages ... | Hacker News

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OJFord on Jan 8, 2021 | parent | context | favorite | on: WhatsApp Beaten by Apple’s New iMessage Privacy Up...

I mean your phone number. WhatsApp finds contacts by phone number, and messages them over SMS if they are not themselves on WhatsApp. (At least, I thought it did?)

So I'm saying I assume the situation after deleting WhatsApp is the same as if you'd never had it, SMS.

It wouldn't make sense for User B deleting WhatsApp to cause B's phone number to disappear from User A's contacts.

thekyle on Jan 8, 2021 [–]

Signal can send SMS message as a fallback, but I don't think WhatsApp has that feature.

dylan604 on Jan 8, 2021 | [–]

I did not know Signal was able to do that. Seems kind of like it is defeating the purpose of Signal.

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