Is there a way to detect if DS is on phone when he should be sleeping?

[Bluskythinking]

We allowed DS to have phone in his room overnight as he's now 15. We didn't want to agree to this but we did. Well his behaviour at school seemed to deteriorate some weeks later. He says he's not using phone at night. However I wonder if he is. Is there some way to find out if the phone is in use?

More of an issue is your fear of your son. Tiptoeing around children so that they don't get upset needs to be managed proactively

It doesn't matter how physically big he is you should be able to parent him. Are you scared he might physically attack you?

Giving him the phone overnight was a massive mistake. You have several options- turn off the WiFi, just tell him he can't have the phone overnight, let him keep the phone but warn him he can't have it if his behaviour doesn't improve.

Do you even know what he's using his phone for overnight?