How to stop iPhone from recording while typing questions?

Make sure Voice Control is turned off at Settings -> Accessibility -> Voice Control.

"turn off recording while typing in question in iph: My phone picks up people around me while I am typing in questions"

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Others' Voices Getting in your Way:

A. Turn Off Siri:

What do you mean by "typing in questions? If you are typing in a textbox on an app or on a Web page, then see about turning off Siri.

B. Turn On Voice Isolation:

If you are on a phone call, turn off Bluetooth, and then turn on Voice Isolation. It helps reduce background noise during calls, making it easier to hear the person you're talking to. The only way to turn this on, is while you are on a phone call. So,...

1. Turn Off: Bluetooth in Settings
2. Swipe Up: on the screen
3. Change: microphone mode to "Voice Isolation"