Google is developing a new security feature for Android 16 that will block changes to sensitive settings during phone calls to protect users from phone scams. This feature will prevent users from enabling sideloading permissions and granting accessibility access while on a call. A warning message will be displayed if users attempt to make such changes, informing them that these actions are prohibited during calls. The sideloading permission is disabled by default, but users can enable it through settings, except for those with Advanced Protection Mode activated. These security features are expected to be included in the public release of Android 16 later this year.