Samsung Galaxy S21 ultra Cell C South Africa. The Samsung Galaxy S21 Ultra is the headliner of the S21 series. It’s the first S series phone to support Samsung’s S Pen. Specifications are top-notch including Snapdragon 888 chipset, 5G capability, up to 16gigs of RAM, and 512GB of storage. A 5000mAh battery keeps the lights on for this powerhouse. In the camera department, a quad-camera setup is presented with two telephoto sensors.