Texts when Roaming topic

Does anyone else have this problem? My SGS5 is pure stock, unrooted. I just got it the other day and am still reading and learning about the root methods so I haven't gone that far yet but I noticed that whenever I am roaming...which is a lot at my house...I can't send or receive text messages. I have played with the roam settings a little but its made no difference.

Thanks for any help given.