Re: "Speaking highlighted text : I used to be able to highlight messages or text and then the phone would read it out loud. It doesn’t do that now."
Wondering if Apple Support's online article for iOS 26 can help you:
See how to: Hear iPhone speak the screen, selected text, and typing feedback - Apple Support
Eg : Tap Settings > Accessibility > Read and Speak:
Then:
- "Speak Selection: Turn on Speak Selection to have iPhone speak the text you select.
Customize the highlight style, color, and selection for in-app text that is spoken aloud."