Is it possible to read someone else's whatsapp messages?

I’m worried about my teen and want to make sure they’re safe online but I’m not sure if it’s even possible to check their WhatsApp without them knowing.

WhatsApp’s end-to-end encryption means there’s no magic app that’ll silently pull chats from afar—you’d actually need physical access to their phone to install monitoring software, and even then, modern iOS and Android make stealth pretty tough. Almost every site promising a “remote WhatsApp reader” is just a recurring billing scam or straight-up malware. You’ll save yourself a lot of tech headaches (and trust-building time) by sticking to built-in family dashboard screen-time limits and just chatting with them about what they’re seeing online.