I have a Note 4 and installed WhatsApp on it. I use WhatsApp often to text my wife. In my phone contacts list, I picked a special ringtone for my wife's contact so I'll know that she's calling. But - somehow, someway - WhatsApp has picked up my wife's telephone ringtone and uses it to notify me of messages from her - very annoying!!! And what's more annoying is I can't find a way to set a WhatsApp message tone for her messages - I can't even return it to the default message tone. Does anyone have any ideas on how to fix this?