Waterproof smartphones have not really been fully waterproof until now. The new Sony Xperia ZR can be submerged in five feet of water, while maintaining its ability to take pictures. These are truly the definition of waterproof smartphones -- we are not just talking about your phone being okay if you drop it in the toilet or the pool. These waterproof smartphones are actually meant to go underwater to take pictures.
Right now the camera is only built to do this in fresh water but it allows you to shoot full HD videos, and the device's Exmor RS image sensor lets you take HDR photos and videos. With these capabilities you will be able to take underwater shots and videos like no other smartphone before. This is a true testament to how advanced our smartphones have become.