Waterproof phone cases are protective covers designed to keep smartphones safe from water damage. They are made from durable materials that create a seal around the phone, preventing water from entering. These cases are ideal for activities like swimming, hiking, or even everyday use in rainy weather. Many waterproof phone cases also offer additional protection against dust and drops. They come in various styles and sizes to fit different phone models, ensuring that users can find a suitable option. Popular brands include LifeProof and OtterBox, known for their reliable waterproof technology.