Apple is getting ready to launch iOS 17.5 soon. About a year ago, they released iOS 16.4. It had a cool feature that made phone calls sound much better. This update came out in March 2023. It brought Voice Isolation for iPhone calls. In the release of iOS 15 in 2021, they added Voice Isolation and Wide Spectrum for FaceTime calls. But now, only Voice Isolation is available for regular phone calls.
When you turn on Voice Isolation, it makes background noises quieter during your phone call. This means if you’re on a business call or chatting with friends, you won’t hear distractions like your dog barking or construction noise outside.
To turn on Voice Isolation, you need to be on a phone call. You won’t find this feature in Settings. Once you activate Voice Isolation during a call, it will stay on for all your future calls until you decide to turn it off.
Steps to Enable / Disable iPhone Voice Isolation 
Here’s how you can enable Voice Isolation during a phone call:
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1. Start or answer a phone call.
2. Swipe down from the top-right corner of your screen to access the Control Center.
3. Tap on “Mic Mode” near the top-right corner.
4. Then, tap on “Voice Isolation.”
Tip: If you prefer, you can also call yourself to test and enable Voice Isolation by following the same steps above.
To turn off Voice Isolation, follow the same steps as before:
1. Start or answer a phone call.
2. Swipe down from the top-right corner of your screen to access the Control Center.
3. Tap on “Mic Mode” near the top-right corner.
4. Then, tap on “Standard.”
This will return your microphone to its default setting.
Wide Spectrum Explained
Next to Voice Isolation in Mic Mode, you’ll find Wide Spectrum. Unlike Voice Isolation, which makes background sounds quieter, Wide Spectrum amplifies background sounds without changing your voice.
Wide Spectrum is handy for calls where multiple people are on the line together. This way, everyone’s voice can be heard clearly, not just the person who is speaking directly into the phone.
Right now, Wide Spectrum is only for FaceTime calls, not regular phone calls. However, since the feature still shows up in Mic Mode during a phone call, there’s a possibility it could be available for phone calls in the future.
Source / Via: CNet
