Not being asked to grant all permissions that an application wants up front (before you even get a chance to use the app) has a positive impact on the user expe

Not being asked to grant all permissions that an application wants up front (before you even get a chance to use the app) has a positive impact on the user experience. If the application asks for permission to access my contacts only after I select an option to share information with others, for instance, I can feel more confident about granting that permission. Asking for all permissions up front is the permissions model that Google just abandoned.