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"
while a command is actively executing.
: Input unlock codes or modify APN settings that are restricted by carriers. Essential Terminal Software for Huawei Modems Huawei Modem Terminal Download
Windows or macOS will not recognize the terminal interface without proper drivers. Download and install the latest software or standalone Huawei COM Drivers . Once installed, connect your Huawei modem to your computer via a USB cable. Step 2: Identify the COM Port (Windows) Right-click the Start menu and select Device Manager . Expand the Ports (COM & LPT) section.
The first digit indicates status: 1 means locked, 2 means unlocked. The second digit shows remaining unlock attempts. AT^CARDLOCK="your_unlock_code_here" Advanced Signal Provides highly detailed LTE signal metrics
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Huawei Modem Terminal is a specialized utility used primarily for advanced configuration and management of Huawei 3G and 4G USB modems. It functions as a human-machine interface, allowing users to send specific AT commands and roaming state. AT^HCSQ?
Once drivers are installed, you can use several terminal applications to send commands to the modem. Graphical Terminals (Recommended for Windows) : Tools like , or the older Huawei Modem Terminal
Search for a trustworthy source. Avoid "cracked" or "paid" tools—all legitimate terminal tools are free. Recommended search strings:
The terminal disconnected. The router powered down.
Input the exact identified in Device Manager. Set the Speed/Baud Rate to 9600 or 115200 . Click Open or Connect . Step 5: Test Communication