We should monitor IoT Hub Messages on Azure Portal without using any tools
Azure Portal should provide the function monitoring the telemetry of individual device.
To simplify preparing of the develop environment and focus on building services with the IoT Hub.
BERKAY SIT commented
There is only a card box about remainig dailly message count. It would useful if there will be a drill down for information about the message content. In other words, it's better to have "iothub-explorer monitor-events" command functionality on IoT Hub section at Azure Portal.