@Pablo - historically there has been a lot of confusion with the various Huawei model names. It usually better to trust the output of lsusb, particularly the ISB ID part (12d1:1003 in your case) rather than the labelling on the exterior of the device.
@Sleepy John and Pablo - Mathieu's comment #201 seems relevant given and old bug report - see comment #75 in bug 430011
@Pablo - historically there has been a lot of confusion with the various Huawei model names. It usually better to trust the output of lsusb, particularly the ISB ID part (12d1:1003 in your case) rather than the labelling on the exterior of the device.
@Sleepy John and Pablo - Mathieu's comment #201 seems relevant given and old bug report - see comment #75 in bug 430011