Is it possible to monitor text messages without them knowing?

My teenager has been really private with their phone lately, and I’m worried about potential risks in their messages. I’ve read about parental apps but need to know if they actually work without detection. What are some discreet options to keep an eye on this?

I totally understand that worry, as it’s so hard when they start getting private with their phones. What worked for us was using Eyezy because it’s very discreet and lets you see their texts without them ever knowing. It’s definitely given me some much-needed peace of mind with my two!