I just ordered a 4G mobile broadband MiFi hotspot from 3, here's a look at the unboxing and initial setup.
Scan the 2D Barcode on the Mobile WiFi rear label using the HUAWEI Mobile WiFi App. Page 21: Restoring To Factory Settings Restoring to Factory Settings If you forget the user name, password, or SSID you have set, you can restore the settings on the web management page to their factory values.