How to use Alexa offline When Alexa won't connect to Wi-fi?

Yes Amazon Alexa Used in offline conditions, even your Alexa won't connect to Wi-Fi device just the some setting in Alexa App. Because Amazon is coming with the Latest feature such as Enable the local Voice recognition in Amazon Alexa App without connecting to the Wi-Fi or any internet.

Now go to the Alexa App setting on your smartphone

Tap All Device at the Top

Select the Echo device (Echo Plus)

Now scroll Down to the Local Voice control in device setting

Enable the Local Voice control on the Alexa App

Also Check here Some important instructions for Alexa Offline mode.