The latest smartphones are already waterproof. If you are planning to take yours diving, you should consider investing in an underwater housing. The AxisGO iPhone 11 Underwater Housing is worth a look. It is rated to 33ft. Simply insert your phone, clamp the case closed, and you are ready to go.
The AxisGO supports touch interactions. You can use it with a lanyard to avoid dropping your phone.
**Disclaimer: Our posts may feature aff links. As an Amazon Associate, we earn from qualifying purchases. Please read our disclaimer on how we fund this site.