A secure communication app shouldn't know your phone number anyway.
Why not? It has to know some unique identifier or it can't route messages to you.
The unique identifier doesn't have to be your phone number with your phone bill, credit card, and most importantly your name, attached to it...
Anonymous and secure aren't the same thing.
That's irrelevant since your phone number isn't required for either "secure" or "anonymous" communications
If only someone could invent some technology to generate random globally unique identifiers. Maybe some programmer can get on this. /s
What makes a random globally unique identifier generated by Signal more private than the one generated by your cellular provider?
The two aren't linked. Even if your Signal GUID is found, they can't go to the cell provider and get a trove of data on you.
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