Smartphone apps often need access to features such as a camera or location to work, but a request is not automatically justified by an app’s purpose. Reviewing permissions can help users limit access to personal information and device functions.

On iPhone and iPad, users can go to Settings > Privacy & Security to see permission categories and the apps allowed to use them. Tapping a category, such as Microphone, shows the apps with access; users can revoke it by switching off the relevant setting. Location access can also be limited, while photo permissions can be restricted to selected images and videos.

Apple’s App Privacy Report provides details about apps accessing data and sensors, as well as the domains they contact and when. When an app first asks for permission, users can choose options such as Allow Once or Allow While Using App for location access.

On Android, permissions can be managed from an app’s information page. Long-press an app icon and tap the information button, or go to Settings > Apps, select an app and open Permissions. From there, users can allow or deny access; some permissions, including location, offer choices such as access all the time or only while the app is in use.

Android’s Privacy dashboard shows which apps have accessed different permission types in the past 24 hours. Its location in Settings can vary by device, but users can look under Security and privacy or search for “Privacy dashboard.” Both the Google Play Store and Apple’s App Store also list information an app may request before it is installed.

Android and iOS display indicators when apps use sensitive features. On iPhone, a green dot signals camera use and an orange dot indicates microphone use; a blue location icon appears when an app accesses location. Android uses similar status-bar icons, and its quick settings panel can show which app is using those features.

Sources: Engadget.