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Hidden function in iPhone improves call quality

With iOS 15, Apple has introduced a new feature that significantly improves the voice quality during calls via Teams, Skype or FaceTime. However, many users do not even know about it because it is very well hidden in the control center.

The new iPhone feature is called Voice Isolation and it improves the quality of the microphone during a call – regardless of whether it’s a regular voice call or a video call. Apple makes it available not only on its iPhones and iPads, but also on Macs and MacBooks running Monterey.

Voice Isolation hard to find on the iPhone

The problem: Voice Isolation, or as it’s called here, Voice Isolation, is pretty well hidden in the system from the iPhone and the settings can only be accessed when you’re in a call. It is therefore advisable to first call a friend and make the adjustments in peace. Otherwise, you might be in an important call, while you first have to search around in the menu to activate Voice Isolation on the iPhone.

Also important to know: Voice Isolation cannot be activated during normal phone calls with the iPhone’s phone app. The mode is only found in (video) calls made via services like Microsoft Teams, Skype, FaceTime, WhatsApp and the like.

If you are in such a call, proceed as follows:

A swipe down from the upper right corner (or, for example, from the bottom to the top on the iPhone SE) opens the Control Center on the iPhone. On the Mac, click in the upper right corner. Here you will find a button labeled “Mode”, marked by a microphone icon. The setting is factory set to “Standard,” though there are two other options called “Voice Isolation” and “Wide Spectrum.” Select Voice Isolation (engl. for Voice Isolation).

Voice Isolation on iPhone
Set up Voice Isolation on the iPhone Photo: atechbook

The setting activates a kind of noise cancelling for the voice. Thanks to it, the microphones in the iPhone filter out all distracting background noise during the call. As a result, the caller’s voice is even clearer.

Voice Isolation not usable with all iPhones

Voice Isolation is part of the update to iOS 15, but as the website Techradar reports, the feature is not found on all older iPhones, even though they run the latest iOS version. For example, Voice Isolation is not even displayed on the iPhone 7 with iOS 15. The option was also visible on an iPhone 11, but it was displayed as “not available”.

However, Voice Isolation should run without problems on newer models like the iPhone 12 or 13. We ourselves were able to try out the feature with both an iPhone 13 and an iPhone SE. In both cases, we were pleasantly surprised by the changes in voice transmission.


  • iOS
  • iPhone