1. Introduction
This user manual provides comprehensive instructions for the setup, operation, maintenance, and troubleshooting of your HUAWEI B311-221 LTE Router. This device is designed to provide high-speed wireless internet access using 4G LTE technology, serving as both a wireless modem and a router for home or office use. It supports connection for up to 32 Wi-Fi compatible devices and offers a range of advanced networking features.
2. Package Contents
Please verify that all items are present in your package:
- HUAWEI B311-221 LTE Router
- Power Adapter
- Ethernet Cable
- Quick Start Guide (if included)
- Warranty Card (if included)
3. Product Overview
Familiarize yourself with the physical components and indicators of your HUAWEI B311-221 LTE Router.
3.1 Front Panel Indicators

Image: Front view of the HUAWEI B311-221 LTE Router, showing the power, network, Wi-Fi, LAN/WAN, and signal strength indicators.
- Power Indicator (⏻): Indicates the power status of the device.
- Network Indicator (↻): Shows the network connection status (e.g., 4G, 3G).
- Wi-Fi Indicator (📶): Indicates the Wi-Fi status.
- LAN/WAN Indicator (💻): Shows the status of the LAN/WAN port connection.
- Signal Strength Indicators (📶): Displays the strength of the cellular signal.
3.2 Top/Side Panel Buttons

Image: Side view of the HUAWEI B311-221 LTE Router, highlighting the Power and WPS buttons on the top edge.
- Power Button: Press to turn the device on or off.
- WPS Button: Used for Wi-Fi Protected Setup to quickly connect devices without entering the password.
3.3 Rear Panel Ports and Slots

Image: Rear view of the HUAWEI B311-221 LTE Router, showing the power input, LAN/WAN port, TEL port, Reset button, and SIM card slot.
- Power Port: Connect the power adapter here.
- LAN/WAN Port: An Ethernet port that can function as either a Local Area Network (LAN) port for connecting wired devices or a Wide Area Network (WAN) port for connecting to an existing modem/router.
- TEL Port: For connecting a telephone for voice services (if supported by your SIM card and service provider).
- Reset Button: Used to restore the device to factory default settings. (Use a pin to press and hold for 3-5 seconds while the device is powered on).
- SIM Card Slot: Insert your standard-sized SIM card here.
4. Setup
4.1 Inserting the SIM Card
- Ensure the router is powered off.
- Locate the SIM card slot on the rear panel.
- Insert your standard-sized SIM card into the slot with the gold contacts facing down and the notched corner oriented correctly, until it clicks into place.
- Do not force the SIM card. If it does not fit, verify the size and orientation.
4.2 Powering On the Router
- Connect the power adapter to the router's power port and then plug it into a wall outlet.
- Press the Power button on the side panel.
- Wait for the indicators on the front panel to light up. The Network indicator should eventually turn solid, indicating a successful connection to the cellular network.
4.3 Initial Configuration (Web Interface)
To access the router's web management interface for detailed configuration:
- Connect your computer to the router via Wi-Fi or an Ethernet cable (from your computer's Ethernet port to the router's LAN/WAN port).
- Open a web browser (e.g., Chrome, Firefox, Edge).
- In the address bar, type the default IP address (usually http://192.168.8.1 or http://192.168.1.1) and press Enter. The exact IP address can often be found on a sticker on the bottom of the router.
- Enter the default username and password. These are typically "admin" for both, or found on the router's sticker. It is highly recommended to change the default password immediately for security.
- Follow the on-screen wizard for initial setup, which may include setting up your Wi-Fi name (SSID) and password, and configuring APN settings if required by your mobile operator.
5. Operating the Router
5.1 Connecting Devices via Wi-Fi
The router supports up to 32 Wi-Fi compatible devices.
- On your device (laptop, tablet, smartphone, game console), enable Wi-Fi.
- Search for available Wi-Fi networks.
- Select the network name (SSID) of your HUAWEI B311-221 router. The default SSID and password are usually found on a sticker on the router.
- Enter the Wi-Fi password when prompted.
- Alternatively, use the WPS button: Press the WPS button on the router, then within two minutes, activate WPS on your Wi-Fi device.
5.2 Connecting Devices via Ethernet
For wired connections, use the LAN/WAN port:
- Connect one end of an Ethernet cable to the LAN/WAN port on the router.
- Connect the other end of the Ethernet cable to the Ethernet port on your computer or other wired network device.
5.3 Advanced Features
The HUAWEI B311-221 offers several advanced networking features accessible through its web management interface:
- VPN Support: Configure Virtual Private Network settings for secure remote access.
- URL Filtering: Block access to specific websites.
- DMZ Support: Designate a Demilitarized Zone host for specific applications.
- Ethernet WAN: Use the LAN/WAN port as a dedicated WAN port to connect to an existing broadband modem.
- Port Forwarding: Configure rules to direct incoming traffic to specific devices on your local network.
- Wi-Fi Standards: Supports 802.11b, 802.11g, and 802.11n for broad compatibility.
6. Maintenance
- Firmware Updates: Regularly check for and install firmware updates through the web management interface. Updates can improve performance, add features, and enhance security.
- Regular Cleaning: Keep the router clean and free from dust to ensure proper ventilation. Use a soft, dry cloth.
- Optimal Placement: Place the router in a central location, away from obstructions and other electronic devices that may cause interference, to maximize Wi-Fi coverage and signal strength.
- Password Management: Change default passwords for both the Wi-Fi network and the web management interface to strong, unique passwords.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No Internet Connection |
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| Weak Wi-Fi Signal or Drops |
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| Cannot Access Web Interface |
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8. Specifications
| Feature | Detail |
|---|---|
| Brand | HUAWEI |
| Model Name | B311-221 |
| Connectivity Technology | Wi-Fi, Ethernet (LAN/WAN) |
| Wireless Communication Standard | 802.11b, 802.11g, 802.11n |
| Frequency Band Class | Single-Band |
| Compatible Devices | Game Console, Laptop, Smartphone, Tablet |
| Special Features | VPN Support, URL Filtering, WPS Security, DMZ Support, Ethernet WAN, Port Forwarding |
| Antenna Type | Internal |
| Color | White |
9. Safety Information
- Do not expose the device to extreme temperatures, direct sunlight, or high humidity.
- Use only the original power adapter provided with the device.
- Avoid placing the device near water or in damp environments.
- Do not attempt to disassemble or repair the device yourself. Refer to qualified service personnel.
- Keep the device out of reach of children.
- Ensure proper ventilation around the device to prevent overheating.
10. Warranty and Support
For warranty information and technical support, please refer to the warranty card included in your product package or visit the official HUAWEI support website. You may also contact your point of purchase for assistance.
Please have your product model number (B311-221) and serial number ready when contacting support.





