Hello erika,
I was wondering if you could contact me regarding the same issue the original poster had.
I ported a number to t-mobile, I can make/recieve calls from any network, I can use 3g/4g data, but I an only recieve texts from within t-mobile. I've recieved all of t-mobile's automated text messages, I can text myself, but I cannot recieve texts from other networks (only really tested with AT&T) and my friends on AT&T do not recieve my texts though my phone seems to believe they sent fine.
Thank you!
Martin.