Your phone has no fear when it comes to water but be careful with other liquids.
One of the features you'll find in most top-end phones in 2017 is water resistance. The Galaxy S8 and Galaxy S8+ from Samsung are no exception. Raining outside? No problem. The Galaxy S8's IP68 rating means the rain has no effect. The same goes for a splash at the sink, a dip in the pool, and maybe even a spilled soda or beer.
Yes, maybe. Not everything wet is water and even things that are mostly water might be best kept away from your water-resistant phone.
This doesn't only apply to the Galaxy S8, or even phones in general. Water resistant objects are designed to keep out water — exclusively. Because of the chemical composition of any liquid, anything water resistant might not be beer resistant. Or champange resistant, because science!
Liquids feel, well, liquidy. But all liquids have other things dissolved into them. Things like magnesium and calcium are in the water you drink and depending on where in the world you are you can have very hard water (lots of calcium and other dissolved minerals) or very soft water (very few dissolved minerals) or somewhere in between. The GS8 is designed to be soaked in good old tap water with no ill effects. You don't have to worry, but we don't recommend you take your phone snorkeling. (If you do, send us pics because that's pretty cool).
Other types of water, specifically distilled water and really hot water, are probably something you don't want to dunk your phone in. Science also means that distilled water is virtually free of any dissolved minerals and might be able to penetrate where "regular" water can't. Hot water, on the other hand, can loosen adhesives and gaskets.
A quick rinse to wash away chemicals or sticky liquids isn't going to hurt anything.
Other liquids like beer or antifreeze — or anything that's not just plain water — might have chemicals that can penetrate the water resistant barriers or just make a mess in speaker holes, headphone jacks, and SIM card slots. If you get something that's not water you'd drink on your phone, rinse it gently in the sink with room temperature water as soon as you can.
If you get the ports all gunked up, and it happens to the best of us, don't go jamming toothpicks or sewing needles in the nooks and crannies to scrape it out. Wipe it down with a damp washcloth and let the fabric scrub away the surface dirt and sticky stuff or take a toothbrush and gently work at it. If you do end up having to dig in any holes with anything smaller than your elbow, be super careful not to cause any damage to parts or finishes. All that is part of being water resistant and needs to stay as intact as it can.
You don't need to baby your Galaxy S8 when it comes to using it around the water. It's built for it! Just be mindful for spills and splashes of other liquids.