https://consumerist.com/2017/08/23/sony-agrees-to-refund-xperia-owners-for-claiming-devices-were-waterproof/

A few years ago, Sony walked back its marketing claims that the Xperia line of devices were so waterproof, they could be used to take photos underwater. The company is now agreeing to settle a class action complaint that resulted from those waterproof claims by issuing refunds to anyone whose phone or tablet was damaged by water.

With the release of the Xperia Z5 in 2015, Sony went to great lengths to brag about all the great photos and videos you could take underwater with its devices.