The widget breaks down and categorizes the root cause of poor performance. The reason for poor call performance can lie in any segment such as the user's device, the local network the device is connected to, internet performance, or the WiFi. Here, you can see every minute of poor call performance graphed by the most likely root-cause and broken down by service delivery segment. Hover over a root cause in any segment as shown below to see more details about it. Refer to Possible Root Causes for Performance Degradation section for details on the root causes.