. While often referred to as a "portable" router due to its slim design and plug-and-play SIM card functionality, it is technically a CPE (Customer Premises Equipment)
Unlike its larger siblings (like the B525 or B535), the B311221 is physically compact. However, out of the box, it is configured as a fixed CPE (Customer Premises Equipment). To make it portable , you need the right firmware.
is a common stable release that introduced improvements to SMS functionality, WLAN setup, and security protocols like NAT and firewall configurations. Official Update Methods
Most Huawei B311 updates can be performed directly through the browser interface, making the process "portable" (accessible from any device, including phones).