Using a new simcard and help with forwarding
My question is this, How do I forward text messages? I have an iPhone 6S currently on Tmobile. I have 2 sim cards. Both are working and are separate phone #'s. I want to take out my current sim and put my new one in, and I would like all things related to the first sim to be forwarded to my new sim. I know how to basic forward telephone calls. But I need help in using texts as in having them forwarded. The just of it, is I want my current line the one I will be forwarding to remain my business line, and use the new sim for friends and family only, without having to use 2 different phones and without having to flip flop sim cards. IS this possible to do, or am I missing something? Any help is much appreciated. Thank you.
iPhone 6s, iOS 10.3.2, 32GB Tmobile