Tasha gets frustrated by her iPhone's inability to understand her when she uses speech to text. My Android nails text to speech for me every time.

As a test, we tried doing it with crackers in our mouths to see how they did then. My phone did very well, even with crackers. Tasha's phone was not paying attention.

Then a listener suggested we switch phones because your phone "learns" how you talk. I used Tasha's and she used mine. Here's the video of that test.