I carry two iPhones, and am not ready to move to eSim just yet. I have both my phone numbers set up for iMessage. My XS is my primary iPhone, so anyone who sends me a regular SMS to the secondary iPhone - text message forwarding is set up to go to my XS, my iPad, and my Mac. Ever since I moved to the iPhone Xs (I can reproduce this on the Xr as well), I will receive the green text messages to my Xs, iPad, and Mac. However, from my XS only, I cannot reply to the message. See attached screen shot. I can reply with my mac and even the new iPad pro that just came out. I did a fresh iOS install on all my devices, reset network settings, etc, but at this point I am lost. I reported the issue to Apple as well, but haven't gotten a response yet. Was hoping iOS 12.1.1 contained a fix. Nothing.