To turn on Voice Isolation on an iPhone (iOS 16.4 or later, including iOS 18):
- Start a phone call or FaceTime call.
- Swipe down from the top right corner of the screen to open the Control Center.
- Tap on the "Mic Mode" or "Phone Controls" option that appears.
- Select "Voice Isolation" from the available microphone modes.
This mode prioritizes your voice and blocks ambient background noise, making your voice clearer to the person you're talking to. You can switch back to Standard or other modes the same way.
Voice Isolation is available on iPhone XR, XS, and later models, and for various apps including regular calls, FaceTime, WhatsApp, etc. It remains active per app until changed again.
