Re: How do i activate my txt msgs to read aloud on Windows 10 Mobile?
Open Cortana (if available to you) and select Settings from the Hamburger menu at the top of the screen. Same concept if you are running on WP8.1 or the 10586 Threshold build. If you are in a region that does not yet support Cortana, then you can not do this yet.
Note: Screenshot is from Redstone build 10.0.14322.1000 so it may look a little different if you are on another build.