That actually doesn't say anything about guaranteeing that the phone will be waterproof under those conditions. It says specifically that it is "resistant to submersion" -- the wording there is important, because resistant doesn't mean impervious.
If you look at the
manual on pg 163, the wording there is also very careful to avoid any statement that the phone is waterproof. In fact, there are a lot of warnings about conditions that could cause problems (bold is mine):
"The device is not impervious to dust and water damage in any situation. It is important that all compartments are closed tightly."
"Liquid other than fresh water may enter the device faster. Failure to rinse the device in fresh water and dry it as instructed may cause the device to suffer from operability or cosmetic issues.
And this is from the [URL="https://forums.androidcentral.com/e?link=https%3A%2F%2Fshop-links.co%2Flink%2F%3Fexclusive%3D1%26publisher_slug%3Dfuture%26article_name%3Dac-vb-p-6667485%26u1%3DUUacUvbUpU6667485%26url%3Dhttps%253A%252F%252Fwww.samsung.com%252Fus%252FLegal%252FPhone-HSGuide%252F&token=WvcplDCW]warranty[/URL]:
"Water damage to your device may void the manufacturer’s warranty. The device battery comes with an internal liquid indicator that will record if any water has damaged the battery. Water damage to your device may void the manufacturer’s warranty. Do not handle the device or components with wet hands."
a) I never said impervious.
b) Unless, there is a manufacturer's defect, the ONLY way water will get in, is if you use it in a matter for which it wasn't designed. Meaning, it has been submerged in 1.5m or less of water for OVER 30min, or it has been submerged in water DEEPER than 1.5m.
The rub is proving you were using the phone as it was designed and not subjecting it to abnormal handling. Technically speaking, just by exposing the phone to normal atmospheric conditions will "expose" it to moisture. That is unless you live in the Atacama Desert.
There is what is called, "fair use." As long as you are using the phone for its intended purpose and did not actually purposely abuse or misuse use the device, the warranty will apply.
The point being is that according to the USER GUIDE, it can be allowed to get wet. It is not only in the user guide, but also in advertisements. If push comes to shove, Samsung could be held liable if the phone gets damaged while being used as it was designed. It just depends on how hard you are willing to push back if Samsung wants to be a turd.
For the record, that IP68 rating WORKS. My wife got smacked by 5 foot wave while at Bellows. It knocked the phone (Note 8) out of her case. When we found it, it had been submerged in both salt water AND wet sand. We rinsed it off and let the charging port dry out and it is still going strong. I even have a photo of it when it was underwater.