iOS dictation duplicated My wife and I both run into a problem with some regularity on our iOS phones where the dictation (via the microphone button off stock iOS keyboard) will get duplicated. Often we dictate 10-25 words and suddenly it has inserted them all twice, as if we repeated what we had said a second time. Really annoying and have seen this for at least a year. We have seen it with both emails and texts. Appreciate any suggestions or a link to a public Radar ticket we can up-vote.

iOS version 12.4.1 currently, but has happened on earlier versions.

(There was a laughable suggestion on Apple support community that sounded like a Windows support call from 2002: "reboot phone, then reinstall iOS, and see if that fixes it.")
Surprisingly, I just figured it out!  I am using iPhone X 13.1.3 however, I think this would work on all iPhones and ios versions.
~ Go to settings
~Scroll down to Accessibility
~Scroll down to Voice Control and change it to OFF

I also had a microphone showing on my lock screen in the top left hand corner and this went away, as well as the duplicates when talking to text.  I tested it by switching it on and off to see if it fixed the problem and it did. Woohoo!  It was quite annoying.  I hope this helps :)