The Sony submersion rating is useful for FRESH WATER. Also, just gave that all ports and covers are immovably shut and fixed.
Most swimming pools are chlorine or salt-water based and NOT FRESH WATER.
The little print obviously says that the telephones SHOULD NOT be utilized as a part of any swimming pools or the ocean/shoreline. These telephones ARE coming up short when utilized as a part of chlorinated and salt water.
Sony IS NOT supplanting the greater part of the telephones which are harmed because of water.