| Metric | Result | |--------|--------| | Max download (Cat6 CA) | 187 Mbps (B3+B7, city center) | | Stable download (rural) | 25–40 Mbps | | Upload (anywhere) | 10–30 Mbps | | WiFi range (open space) | ~25 meters (5 GHz) | | WiFi range (through 2 walls) | ~10 meters (2.4 GHz) | | Latency (idle) | 28–35 ms | | Latency (under load) | 60–120 ms | | Power draw | 5V/1.5A (~7.5W) | | Heat (25°C ambient) | Warm, not hot |
Features one adaptable LAN/WAN port for wired connections.
: Up to 150 Mbps download and 50 Mbps upload (LTE Cat 4). huawei b311221 firmware portable
: Enhances the stability of the RJ11 telephone port for clearer voice-over-LTE (VoLTE) or VoIP calls.
April 2026 Product: Huawei B311-221 (LTE Cat6 Portable Router) Firmware Version Tested: 11.0.2.13(H191SP2C983) / 11.0.3.1 (EU Unlocked) Test Duration: 6 months of heavy use (travel, home backup, outdoor work) | Metric | Result | |--------|--------| | Max
updates, the benefits of updated firmware, and how to utilize custom, "portable" (unlocked/versatile) firmware to maximize the utility of your device. What is Huawei B311-221 Firmware?
If you're looking for a reliable way to stay connected while traveling or working remotely, the (also known as the B311s-220) is a powerhouse in a small package. This LTE Cat4 router delivers download speeds of up to 150Mbps , making it a favorite for those who need a "plug-and-play" internet solution that isn't tied to a desk. Why Firmware Updates Matter April 2026 Product: Huawei B311-221 (LTE Cat6 Portable
Firmware is the embedded software that controls the router’s hardware, network features, and user interface. Huawei periodically releases firmware updates to:
: Routing all your portable traffic through a secure tunnel. Granular Band Control