I have seen multiple threads on this, but none of them have any real answer.
I am sending 2 copies of every text message to multiple numbers, and to both IOS and Android phones. In addition, I am periodically receiving 2 versions of texts people send me.
I have attempted the battery/Sim removal and uninstalling all other possible apps (even google hangouts) as per the previous threads.
I am using a Galaxy S5, with the stock "messages" app.
Please advise of anything I could do, as it seems to be a carrier issue at this point.