Disc icon

Hello, My 13 yr old daughter has a galaxy s4 like her Mum & myself, we try to keep an eye on what she's doing & who she's chatting to & all seems fine. We don't want her thinking we're spying on her as it would cause friction but recently i've noticed on the top bar of her phone a cd or dvd icon with an exclamation mark through it, i've searched my own phone nut can't find anything like it so it must be an app, she also has a screenlock so i can't open it to see, does anyone know what this could be ?

 

Ahh thank you so much chanchan05 i have nothing to be concerned about then. Thank you