An iPhone 7 is put to the test against a 60,000 psi waterjet cutter to evaluate its IP67 waterproof claim. This video explores the device's resistance to water and sand through extreme testing.

Samsung's Galaxy S5 comes with an IP67 certification that is rated to survive for half an hour when submerged under three feet (1 metre) of water. On the other hand, Sony's Xperia Z2 flaunts IP58 ...