If you own a Huawei mobile broadband modem (such as the E303, E3131, E5372, or the modern 4G LTE models like the E3372 or B310s), you might have encountered the dreaded "Invalid IMEI" or "Null IMEI" error. When this happens, your modem becomes an expensive paperweight. It refuses to connect to your cellular network, displays "No Service," or restricts you to 2G speeds.
A powerful multi-brand tool that features a dedicated Huawei module for repairing IMEI on MediaTek-based models. huawei modem imei repair tool
Connect the device to a PC and use the tool's "Read Info" or "Detect" function to ensure a stable connection. If you own a Huawei mobile broadband modem