When I'm on a call and an email comes in (or text, or any notification), my phone's screen will illuminate, and I hear the notification sound, but the notification does not actually appear on the lock screen. My lock screen just illuminates blankly - it shows my normal lock screen photo but doesn't show the notification. When I'm not on a call, the notifications appear normally on my lock screen. I only have this problem when I'm on the phone and I get a notification. How do I fix this?
