How do I check if my Alexa-enabled device is connected to internet?
Amazon has programmed their devices to give an educated feedback. For example, if the device is not connected to Wi-Fi, it will tell you so. You can also try asking Alexa the weather forecast and it should inform you of the weather in your city. If does not, go to the Alexa app or the Alexa web app and follow the steps to setup an Echo device.