A company has come up with a ''nanotech' coating for smartphones, which lets users dunk their phones fully underwater and still have them working when they come back out.

A preview for next year’s CES technology conference in Las Vegas showed off the new coating for smartphones and a working phone was dipped into a bowl of water, and was still working even below the surface.

The CEO of the company HZO, which makes the coating, made a call to the Galaxy S, and it rang underwater.

The technology works by spraying an ultra-thin coat over the exterior and ports of gadgets, preventing water damage.

The coating “seeps” into every crevice, including ports such as the headphone port, protecting individual components.

The HZO coating is a mix of various substances that spray over electrical components and protect them from water damage, even inside the ports on electrical devices

The touchscreens also still work, as do the ports the hi-tech spray is applied to.
“HzO uses a unique coating processes to shield almost anything from water and corrosion damage,” the Daily Mail quoted the company as saying.

“Unlike other water damage solutions, with HzO technology a device is not sealed, water is able to enter,” it added.