Amazon Echo Dot requires an active internet connection in order to work.This means you need to connect echo dot to wifi before you can use it to play music,make calls,check the weather etc. The major reasons why echo dot won`t connect to wifi are device out of wireless range,interference from electronic devices,poor wifi connection, network congestion. Fortunately, using this troubleshooting guide you can get your echo dot connected to Wi-Fi. If the problem persists, contact us at +1-888-777-7058.