Talking with teenagers about their life online
Here is a straightforward look at this topic for Crazish.
Teenagers spend much of their social life online, and outright bans tend to push activity out of sight rather than make it safer. Regular, relaxed conversations work better than occasional lectures. Ask which apps they enjoy and why, what their friends are talking about and whether anything online has ever made them uncomfortable, then listen without immediately reacting.
Agree together on a few clear principles: keep accounts private, never share passwords or location with strangers, and think before posting anything that would be embarrassing later. Make sure they know they can come to you if something goes wrong without automatically losing their phone. Privacy settings and parental controls help, but trust and communication matter most.