What is this large icon on my status bar?

[AC Question]

I just got a Galaxy Note 5 yesterday and someone, as I was customizing it, a large white rectangular icon showed up on my status bar and I cannot figure out what it is. I really don't like it and would love to turn whatever is doing it without having to reset the thing... Thanks!

 

[Paloma Vita]

I am the one who posted this question and here is a pic of the icon in question
Thanks!