How do I keep Debug.Log in archive/release iOS builds?

I'm trying to capture Debug.Log to files Application.logMessageReceived in order to help diagnose bugs. This appears to work fine, except in archive/release builds on iOS, where I get nothing.

Is Debug.Log disabled in release builds? Is there a way to enable it?

I understand that this can affect performance, and I'm only using in situations where performance isn't a concern.

Thanks!