The Galaxy S23 Ultra has a squarer form factor than the rest of the series because it’s the only variant to adopt the S Pen. The back panel and display curve around the side edges, but only slightly. The S23 Ultra is flatter than the Galaxy Note series used to be. The phone is IP68-certified for dust and water resistance. It measures 163.4 x 78.1 x 8.9mm and weighs 234 grams.