Why won't Cortana understand the "read message" command (upon receiving SMS message) when I'm driving and understand everything else I say? Instead, Cortana will ask "who do you want to text"
I had this issue and found that talking slower and clearer solved it. It was still a problem with stammer/stutters but this cannot be helped yet
Try to speak
READ IT, it actually works for me!
: Message from +00000000! Read it, Or Ignore it
Me: Read it.
It's just a problem with the current speech recognition technology. You might have to try to speak more clearly. If you just want to have your incoming messages read aloud, you could turn on that feature from: Settings > Speech