New iPad not able to send SMS on Messages
My old iPad can but my new iPad can’t. I have checked all the settings and they are identical on both iPads. They are both connected to my iPhone. Is this just a glitch in the Matrix?
This doesn't specifically answer my question. I did finally figure it out with a bit more research. What I had failed to do, and this is a critical, was to set up my iPhone to do Text Message Forwarding to my new iPad. Go to Settings > Messages > scroll down to Text Message Forwarding > find my new iPad in the list of devices and make sure the switch is toggled on. And voila!
(Your second link "try out this one" may have addressed the problem but the link didn't work.)
