Device Settings 2181. From home, tap Apps > Settings > Applications > Default applications.2. Tap each default setting to see what services or applications are available to set as the default. Browser app: Choose a default browser app. Calling app: Choose a default calling app. Messaging app: Choose a default messaging (text and multimedia) app. Set as default: Choose default apps for other functions. Home screen: Choose a Home screen type. Device assistance app: Choose an app that provides assistance for using your device.Note: If you choose a default messaging app other than Messages (Google Hangouts or Messaging+ forexample), you will not be able to use the Messages app unless you restore it as the default messagingapp..Application SettingsConfigure settings and permissions for your phone’s apps.