Don't Use Facebook? Here's How to Check if It Has Your Phone Number and Email, and Delete Them
by Thomas Germain from on (#65BPQ)
When you sign up for Facebook, Instagram, or any other social media app, it typically asks you to upload your contacts. Doing so helps the app find and surface friends who have accounts, but there's a tradeoff: your contacts often contain a trove of data about people who don't use their apps.