[dragonwolf]

I wouldn't be so sure. I noticed for the first time just a few days ago my phone's contacts were showing up on Facebook as suggested friends. These weren't facebook profiles, just a name, phone number and the option to email them. I checked all my settings for facebook and messenger apps and all 'sync contacts' options were disabled and I have never enabled them. I'm on android. So, my guess is they were somehow granted permissions on installing the app and then the options to disable this actually don't do anything. If there was an option upon install to deny access to phone contacts I definitely would have denied it - if they don't provide the option to do this on install, they're being sneaky.