Control center icon

I think Apple may have made a statement about it at some point but I'm not sure. I do remember it was a fairly common question when they first did it. At one point the horizontal line was also a temporary indicator but I just noticed on my phone that it is now permanent -- I'm not sure when that happened.

That is a temporary icon designed to let new users know where Control Center is located. I don't know of any way to make it permanent or make it return once it is automatically removed.

Using one finger, swipe down where the battery icon is.