High Quality Content by WIKIPEDIA articles! The E5 is a mobile Wi-Fi device (or MiFi) produced by Huawei Technologies, and is part of the company’s mobile Wi-Fi series that includes the E5830s, E585, E583c and E586. The E5 series connect to other devices using a wireless interface. The devices are pocket size and allow users to access the Internet through any Wi-Fi device, mobile phone, game console, digital camera, notebook and personal digital assistant (PDA).