For a while, smartphone water resistance was something we longed for — now it's the standard. Just about every Android phone released these days will have some level of water resistance. The level can vary by phone, and it's worth noting early that no phone is ever waterproof.
You'll usually see "ruggedness" described with an IP rating or a MIL-STD rating, or both. Those are standards (loose ones in some cases) that determine how resistant something is from the elements. Things like water-resistance, shock (both electrical and physical), temperature, air pressure, and a host of other natural ways just begging to ruin your phone.
