Since the last update of iOS 10, something happened to me that is perhaps a ploy, but when I put the sound of whatsapp Note in the notifications of the application, did not leave that sound that set, if not another, at first said should Being that I changed something in the settings, I turned the sounds and could not find the solution, although it is well configured.
As we see in the picture everything is fine, the sound of warning is note, but the one that sounded was another and did not reproduce the one that places.
The solution, as in 99.9% of cases to repair something in technology, RESTART THE TEAM, if, what you read, with a reboot everything returned to normal and so I was able to reconnect with the iPhone.