Concealed screws. Love it! This does the job. It’s all in the details people! The small eased lip on the phone shelf is perfectly designed to hold the phone in place but when taking your phone off you can easily slide the phone with your hand instead of trying to pry underneath your phone and lift up out of a straight edge. This piece is well thought out and designed. Even large toilet paper rolls fit perfectly on the post. You see with the phone holders, you need a lip or else the phone slides off too easily and doesn’t stay in place. Also what you just can’t have is a flat straight 90° lip as I mentioned you’ll be prying your phone out and risking the toilet plunge that which many of us know too well. A LOT about a toilet paper holder. I know. But ITS AL IN THE DETAILS!