If you want to use Outlook account in your handheld device will have to use the application. The most important thing about using your handheld device for Outlook account is the login information. Always remember that you must provide the same login information as you do to go into your Outlook Support Number account from laptop for desktop. This is important because only then your contacts will sync with your Outlook account. If the syncing fails then you might have to uninstall and the Outlook app and then install it once again. In case of more difficulties contact Outlook Technical Support help line numbers to resolve this issue in the shortest possible time.