I cannot see an option to add a signature to every Text message on Galaxy S6
this option was available on s4
this is a backward step
Also on emails I could force download emails with the circle with an arrow at the bottom of the screen again a backward step
You can add a signature on N5 on Verizon, but not on T Mobile. Can T mobile please activate the signature? Samsung has NOTHING to do with it. T Mobile took it out. Third party messenger apps are not as good. I took mysms to solve this problem, and it kept screwing up. You can go on quick response and type it in. then click that everytime. Its a big hassle.