103settingsApplicationsChange the setting for managing installed applications.• Unknown sources: Select to download applicationsfrom any source. If you do not select this option, you canonly download applications from the Android Market.• Manage applications: Access the list of the applicationsinstalled on the phone and check the applicationinformation.• Running services: View the services that you are usingand access them to manage them.• Memory usage: View the available memory and thememory used by applications on your phone.• Battery usage: View the amount of power consumed.• Development:• USB debugging: Select to connect your phone to aPC by using a PC data cable. This is for applicationdevelopment.• Allow mock locations: Allow mock locations andservice information to be sent to a Location Managerservice for testing. This is for applicationdevelopment.• Samsung Apps: Select a network connection (Wi-Fi orpacket switched data network) to get application updatenotification from Samsung Apps.Accounts and SyncChange the settings for the auto sync feature or manageaccounts for synchronisation.• Background data: Select this setting to use the autosync feature. The auto sync will run in the backgroundwithout opening applications and synchronise data.• Auto-sync: Set the phone to automatically synchronisecontact, calendar, and email data.