I've deleted all my contacts in Telegram (settings > contacts) yet still get new "your contact has joined Telegram" messages. Where is Telegram keeping this separate, "central" list of my contacts I can't access through the app?
Dangerously for privacy, a friend's account keeps getting notifications of when my contacts join because the app must have automatically scraped my contacts from my account to theirs when I was setting up their Telegram a few years ago (it was a used phone so all I can think of is I might've used my SIM card to test things out during the process).<p>Since we can't access this "central" list there's no way to clear them up apart from as they join, one by one.