Can I lock my child's iPhone remotely for free?

My kid is always on their iPhone and I want to set some limits. I know there are parental control apps but I’m looking for a free way to lock it remotely. Any suggestions?

Hi Chad! What worked for us was using Apple’s built-in Screen Time feature — you can set downtime and app limits remotely if you have Family Sharing set up. For more detailed control and easier monitoring, I also like Eyezy; it’s not free, but the peace of mind is worth it.