Hi,
Just to clarify, after you've updated your iPhone you lost the ability to talk to the phone and have it type out what you were saying for you.
If this is the case, here's how you can fix it:
- Open Settings > Go to General > Scroll down and select "Keyboard > Scroll Down and make sure the switch next to "Enable Dictation" is green.
Next time when you use an app that requires keyboard inputs and allows you to use your voice to type, look for the icon with a microphone and tap on it to begin speaking. As you speak, you'll see the phone types out what you're saying live. When you're done, just tap "Done."
I hope this helps