My oldest is 9. He has a used iPhone that my wife and I manage. It's is wifi only and has a limited selection of apps. He primarily uses it to listen to audiob

My oldest is 9. He has a used iPhone that my wife and I manage. It's is wifi only and has a limited selection of apps. He primarily uses it to listen to audiobooks, and occasionally makes video calls with family members. No web browser and no social media.