I, like many other people, have a pretty durable case that wont allow me to use the control center swipe from the bottom if the screen. So i ripped out the plastic shield of the case, and melted away the area around the round button. 
Make sure u pull the plastic from the outside towards urself, otherwise the plastic will warp and ur phone wont sit flush against the case.
Make sure u pull the plastic from the outside towards urself, otherwise the plastic will warp and ur phone wont sit flush against the case.