Zack Whittaker. Facebook won't let you opt out of its phone number 'look up' setting. TechCrunch, March 2019. URL: https://techcrunch.com/2019/03/03/facebook-phone-number-look-up/ (visited on 2023-12-07).
I think it's crazy being able to search people up with their phone numbers and that it's required to make an account with a phone number. This reminds me of the school directory and how a couple people have found my number through there, texting me, even though I have never given them my phone number myself. People can have malicious intent, so knowing this, it makes me wary.