WCDMA Handset Huawei USB AT Device (COM4) Driver

The WCDMA Handset Huawei USB AT Device (COM4) driver lets Windows recognize the AT-command interface of a compatible Huawei handset connected through USB. You may need it if Device Manager shows an unknown device, the handset’s serial interface is missing, or compatible connection software cannot communicate with the phone.

Key Features

• USB-to-serial communication: Provides access to the handset’s AT-command interface so compatible applications can send supported commands and read device responses.
• Device Manager identification: Helps Windows list the Huawei interface under Ports (COM & LPT), where you can check its status and assigned COM port.
• Legacy Windows compatibility: Intended for supported configurations running Windows 10, 8.1, 7, Vista, or XP. Choose a package that matches your Windows version and system architecture.
• Connection troubleshooting: Installing the correct driver can resolve recognition problems caused by missing or incompatible driver files. It does not replace drivers needed for other handset functions, such as file transfer.

How to Install WCDMA Handset Huawei USB AT Device (COM4) Driver

1. Check your system and device. Confirm your Windows version and whether it is 32-bit or 64-bit. In Device Manager, check the device’s hardware IDs to help verify that the package matches your Huawei handset.
2. Select a compatible package. Before starting your WCDMA Handset Huawei USB AT Device (COM4) driver download for Windows, review the package’s supported hardware and operating systems. For Windows 10/11 searches, note that Windows 11 is not included in this device’s listed OS support; do not assume compatibility.
3. Download and prepare the files. Use a trusted source for a free download, then extract the archive if necessary. Check that the publisher and package details are consistent with the intended Huawei device.
4. Install the driver. Run the supplied installer, or open Device Manager, right-click the relevant device, and choose Update driver. Select the option to browse your computer and point Windows to the extracted driver folder.
5. Verify the connection. Restart if prompted, reconnect the handset, and check Device Manager for warning icons. The assigned port may differ from COM4; select the actual port in your connection software.

Keep the driver updated when a compatible release addresses a problem or improves support for your setup. Choose the latest version that explicitly supports your handset and Windows edition rather than installing an unrelated update simply because it is newer.