(Now they hitch a ride on the seams of nylon luggage.) Feather beds are much more expensive than down-filled duvets or comforters. They are a heavier construction. So if you live in a damp climate without central heating, it may suit you to use the feather bed as a warm covering. If, on the other hand, you live in a place with all the modern conveniences, it would be better used it to even out a lumpy or hard matress.
Sometimes the liquid contact indicators are placed in such a way that they can be inspected from the outside. For instance there is a LCI in the headphone connector, the dock connector, and near the SIM-card slot of an Apple iPhone.
Step 1: Get the device out of water as quickly as possible after your iPhone dropped in water so that the damage can be minimal; Step 2: After you have got your water damaged iPhone out of water turn the wet phone off by holding down the power button if it has not already turned itself off. This would prevent the possibility of a short circuit of the electronic circuitry inside which would render the iPhone useless.