As of now, there is no specific information available regarding common issues with call quality after updating to iOS 18.3.2. The update primarily focuses on addressing a critical security vulnerability related to WebKit, which could allow maliciously crafted web content to escape the Web Content sandbox[1][2][5]. This update is crucial for enhancing device security and does not specifically mention improvements or issues related to call quality.
However, iOS updates can sometimes introduce or resolve connectivity-related issues, which might indirectly affect call quality. For instance, previous versions of iOS 18 have faced issues with cellular network stability, including dropped calls and inconsistent data connections[3]. If such issues persist, they could potentially impact call quality. Nonetheless, there are no detailed reports specifically linking iOS 18.3.2 to call quality problems.
For users experiencing call quality issues, features like Voice Isolation, which was introduced in earlier iOS versions, can help improve call clarity by reducing background noise[8]. However, this feature is not directly related to the iOS 18.3.2 update.
In summary, while iOS 18.3.2 addresses significant security concerns, there is no specific mention of call quality issues or improvements in this update. Users should continue to monitor their device's performance and report any issues to Apple if they arise.
Citations:
[1] https://www.forbes.com/sites/kateoflahertyuk/2025/03/12/ios-1832-update-now-warning-issued-to-all-iphone-users/
[2] https://www.zdnet.com/article/update-your-iphone-now-ios-18-3-2-patches-a-serious-web-browser-bug/
[3] https://www.geeky-gadgets.com/ios-18-3-2-fix/
[4] https://support.apple.com/en-us/121161
[5] https://appleinsider.com/articles/25/03/11/dont-wait-to-update-ios-1832-fixes-an-actively-exploited-issue
[6] https://www.cnet.com/tech/services-and-software/download-ios-18-3-2-right-now-to-patch-this-security-issue/
[7] https://www.zdnet.com/article/the-latest-ios-18-3-update-was-killing-my-iphones-battery-until-i-disabled-this-popular-feature/
[8] https://www.cnet.com/tech/services-and-software/your-iphones-secret-feature-that-sharpens-call-quality/
[9] https://www.tomsguide.com/phones/iphones/ios-18
[10] https://www.geeky-gadgets.com/ios-18-3-2-what-to-expect/
[11] https://discussions.apple.com/thread/255966351