iOS 16.4 is one of the last few major upgrades before iOS 17 arrives at the WWDC 2023 conference, probably in June. Check out the full feature list of the iOS 16.4 update. iOS 16.4 Update FeaturesThe Voice Isolation feature for cellular calls is claimed to improve ambient noise reduction. This feature is currently available on FaceTime and other third-party VoIP call apps.There are a total of 21 new...