It was a brainstorm idea in screen design from Hurrian, & its implementation may be found unwanted or just impractical by Mohammed, but the message & call notifications with names seemed to me as a user very practical & desirable.

When doing a quick check, it would be nice to just hit the button to see not just if any messages or calls had come in, but from whom. There are lots of times you need to make a quick check, & the decision on whether to respond immediately is usually based on who the calls & messages are from.

Also FWIW: I think the icons are a better choice because they alleviate any need for setting a language for the application and the associated files for accomodating different languages. It might also reduce comprehension time for a new user to have an unlock padlock icon somehow associated with the slider.