Understanding how a waterproof phone cover works helps you use it confidently and safely. A waterproof cover uses special sealing technology that blocks water from entering. It creates a protective barrier around your phone so water cannot reach the internal parts of the device. Most waterproof phone covers use airtight seals. These seals are made from rubber or silicone. When you close the cover, it forms a vacuum-like structure around the phone. This vacuum prevents water from slipping through even tiny gaps.
