A phone case is a protective covering designed to fit around a mobile device, such as a smartphone. It helps safeguard the phone from scratches, drops, and other potential damage. Phone cases come in various materials, including plastic, silicone, and leather, and are available in numerous styles and colors to suit personal preferences. In addition to protection, phone cases can enhance the functionality of a device. Some cases include features like card slots for storing credit cards or cash, while others may have built-in stands for hands-free viewing. Popular brands of phone cases include OtterBox, Speck, and LifeProof.