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You can find people by phone number on telegram. That is the most plausible scenario. Like my first boss out of college. I got a notification saying he joined telegram.
Crazy what's weird is this guy has a picture of himself too and I don't recognize him I've never seen him before I don't know how the hell some stranger knows my full name
Turn off the contactlist auto add crap in settings, and check friend privacy, if you add someone as friend it will default to showing your phone number. Turn that off lol.
Yeah some of those settings were turned off some of them weren't thank you
If you haven't hidden your phone it is stupidly easy to find who you are. Look up what people finders are. You'll be surprised
I think maybe it's because I've been looking for jobs recently and some scammers might be taking my phone number off of my resume or something