Phone cases are protective covers designed to fit around mobile devices, such as smartphones. They help safeguard phones from scratches, drops, and other damage, extending the device's lifespan. 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 functionality. Some cases feature built-in cardholders or kickstands, making it easier to watch videos or carry essentials. Popular brands like OtterBox and Speck offer a range of options, catering to different needs and tastes in the market.