With Samsung's latest flagship smartphones preorders already shipping ahead of the announced 'mid March' date, some people have been "eager" to test their IP68 certification, with one XDA forum user even going as far as trying some underwater photography, as official previews like the one above don't mention not to try it at home, and many people don't take the time to read the manual.
XDA senior member xxaarraa claims to have used a Galaxy S7 Edge smartphone to capture an underwater image, after which the device refused to charge with a wall adapter, instead displaying a “Moisture detected in the charging port”. As of the writing of this post, the phone can only be charged slowly, and the owner will get a replacement.
It's important to note that Samsung has managed to get the S7 and S7 Edge to be IP68 certified even though they have an exposed micro USB charging port, but the company has apparently added additional safeguards to compensate for this shortcoming, thus lowering the risk of a short-circuit for people who did not read the manual.
While other members of the XDA community have had different experiences regarding the wait time until charging was enabled again, it's good to know that Samsung has gone out of its way to make its new flagship smartphones 'smarter' about when it's safe to charge after contact with water.
In the official manual, Samsung mentions the fact that the IP68 certification is not an absolute guarantee that your S7 or S7 Edge smartphone will survive any conditions, so think twice before you go swimming with it.