old telephone lines did not disclose info about me with merely my phone number. whataspp discloses name, picture, status
As for your second comment, updated first comment with:
I am not even sure how this is GDPR-compliant if that app is European. They do not have my permission to have my private data, and GDPR does not allow whatAspp to hand it over without my permission either...
Several people have scraped every possible phone number from WhatsApp so they know your name, picture, and status if they want it.
Old telephones had caller ID. They would send your name and company.
You did have to initiate the call, but you still didn’t have any kind of agreement about it.
> whataspp discloses name, picture, status
Only to who you choose to make it available to. And if you choose “everybody”, I don’t see how you can reasonably expect this to mean “everybody not using third-party software”?