Learn how to use notification panel on your Sony Xperia Z Ultra. The icons in the status bar inform you of events such as new messages and calendar notifications, activities in progress such as file downloads, and status information such as battery level and signal strength. You can drag down the status bar to open the Notification panel and handle your notifications.
A notification light informs you about battery status and some other events. For example, a flashing blue light means there is a new message or a missed call.