Even if you have a newer, bigger iPhone, a lot of us still accidentally tap the little microphone icon when we’re trying to hit the space bar. How-To Geek reminds us that you can get rid of it.
The microphone button starts up dictation, which is certainly a useful feature for some people, but it’s an annoyance to others. If you’re not a fan, getting rid of the button should make your life a little easier:
Tap Settings > General > Keyboard
Set the “Enable Dictation” toggle to off.
With that, the microphone will disappear. We’ve mentioned this tip before and it’s something I’ve been doing since it was first introduced, but it’s one of those minor annoyances that’s worth another reminder on how to disable it.
How to Remove the Microphone Button From Your iPhone Keyboard | How-To Geek