Open Device Manager, look under "Ports (COM & LPT)," and find the "Huawei Mobile Connect - PC UI Interface." Note the COM number (e.g., COM3). Launch Terminal: Open the Huawei Modem Terminal app.
Huawei Modem Terminal access is a powerful way to diagnose and control Huawei mobile broadband devices. Use official downloads and drivers where possible, be cautious with firmware or unlocking operations, and rely on trusted community guides for model-specific steps.
Once connected, verify the terminal state by executing diagnostic commands inside the lower prompt bar: Expected Output AT OK Tests terminal-to-hardware data continuity. ATI Device Model & Firmware Revision Requests identity and system build details. AT+CGSN 15-digit Serial Sequence Retrieves the device IMEI number. AT^U2DIAG=0 OK Disables virtual CD-ROM; locks device to modem-only. AT^SETPORT="FF;1" OK Resets and configures advanced modern port configurations. Safety and Troubleshooting Guidelines
B is the number of remaining unlock attempts (default is 10). Huawei Modem Terminal Download
Note: If you cannot see what you are typing, issue the command ATE1 to enable local echo.
Retrieves the unique international mobile subscriber identity. AT^SYSINFO System Info Shows network service status, domain, and roaming state. AT^HCSQ? Advanced Signal Provides highly detailed LTE signal metrics (RSRP, SINR). AT+CARDLOCK? Lock Status Checks if the modem is SIM-locked to a specific network. Troubleshooting Common Terminal Errors Error: "Cannot open serial port"
When you connect a Huawei modem to your PC, the operating system installs several drivers. One of these drivers creates a . This specific port allows terminal emulators to send AT (Attention) commands directly to the modem's baseband processor. This direct connection lets you modify deep system settings, force network bands, and check precise signal metrics. Essential Terminal Software for Huawei Modems Open Device Manager, look under "Ports (COM &
Before you start, it's important to follow some best practices:
PuTTY is a lightweight, open-source terminal emulator. While widely used for SSH, it features a robust "Serial" mode perfect for hardware debugging.
Transfer modems between Stick mode and Modem mode using specific strings like AT^SETPORT . Use official downloads and drivers where possible, be
. Type your desired command in the bottom input field and press Enter. A successful command usually returns a "Receive: OK" message. vutlan.atlassian.net
Run the executable, select your Huawei PC UI Interface from the dropdown menu, click "Connect," and type commands into the bottom entry bar. 3. DC-Unlocker
Drivers: Before the terminal can "see" your device, you must download and install the Huawei USB Drivers. Without these, the COM ports will not appear in the terminal dropdown. How to Use Huawei Modem Terminal After Downloading
If you have successfully accessed the terminal, here are a few standard AT commands used in Huawei diagnostics: