Sony Mobile released 6 Apps that showcase the water resistance of its flagship Xperia smartphones. Sony Underwater Apps is currently Available in the United States for Xperia Z1s and Xperia Z2 via Google Play Store Here.
The apps, which look undeniably fun and goofy, utilize a great deal of clever engineering to work. The end result is an Xperia device that detects and changes behavior when submerged under water.
The abovementioned feat is achieved via a detector, which generates a test tone with frequency beyond that of the human ear. The device uses its dual-microphones to record sounds that are subsequently processed. The resulting spectrograms contain data that helps the device detect if it is in the air or under water.