Surely 99% has given their phone to friends, school were the kids go, the telephone directory, gym, dates...
I mean, if start today not giving my phone number, that doesn't erase the already hundreds of entities I have shared my number with.
This is a question from a casual person, with the goal of informing casual, non-expert people like me, that I think, for example, a great chunk of women have while hesitating to give phone numbers to men they like but aren't sure they are violent/going to use phone number to do violent oppressive acts.
In my experience people hesitate to give their phone numbers in my country, I want to know how unsafe this really is, and what is the solution.
That's not to say you're safe, it's to say you're at the mercy of whatever security theater is present at whoever provides you phone service beyond just the typical spam, pranks, and possible stalker.
This could have some implications like easy to bypass security questions leading to leaked identity data.
Also, giving phone number can be bad for identity theft.
Stack Exchange network consists of 173 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Visit Stack Exchange TLDR: What are the risks, consequences, of giving my phone number to civilian people I meet while socializing/dating or in casual life?
If you don't want to worry about these attacks, annoyances, and how secure your provider is a better question in this day and age of connected services is "Why should I have to give out my phone number?
" With instant messengers being so accessible on smartphones, email, facebook, and social networks what major reason would you have to give out your phone number in the first place?