Siri Stopped Talking on Speakers

Hi Everyone,

I posted this earlier as a discussion because I thought Apple had a fix. Basically, Siri does not speak out loud through iPhone speakers, only through ear buds or small ear speaker in the phone. No "Ding" sound to indicate Siri has started or finished recording. She will not speak out loud any of her feedback. We've tried the following:

Ensured Voice Feedback was set to "Always"

Turning off Siri followed by soft reset & restart, then turning Siri back on

Checking volume of speakerphone (obviously)

Reset all settings to factory default

Restoring iPhone from backup

Changing language from US English to Australia, restarting then, changing back again (doesn't work in Australian either)

Turning off Raise to Speak (and turning back on)

There may have been other things we've played with over the past few days, but I can't remember them all. If you have any suggestions, please let me know!

Thanks,

Lawrence