Phone cases are protective covers that are designed to fit around a smartphone and protect it from various types of damage. They can be made from a variety of materials, including plastic, silicone, rubber, leather, and metal. Some phone cases are designed to provide basic protection against scratches, dings, and minor drops, while others offer more advanced protection against water, dirt, and shock. Many phone cases also include additional features, such as card holders, stands, and grip enhancements. Phone cases are available in a range of styles, colors, and patterns, and can be customized with personal images or designs. They are a popular accessory for smartphones, as they not only protect the device, but also allow users to express their personality and style.