Bad news if you were planning to take your Xperia Z5 for a dip: In a change to its guidelines for the device, Sony says you shouldn't take the device underwater, and you'll void its warranty if you do.
Waterproofing has long been a key selling point of the Xperia line, and the Z5 has the highest possible IP68 rating for water and dust resistance.
However, the language used on Sony's website has changed: "The IP rating of your device was achieved in laboratory conditions in standby mode, so you should not use the device underwater," the new policy says.