I'm not sure it is Voice and Text over WiFi, since I never have this feature enabled since it requires me to have location services turned on on my S6. And with location turned on I'm lucky to get 8 hours battery life.
I had this problem around a year ago; but then it resurfaced again yesterday. Very frustrating.I keep getting a fail when trying to send a message, when in fact it does go through and then I end up recieving incomming messages 2-3 times sometime 30 m...
