Linux Ubuntu & Maxis Broadband Huawei E220 or E1762

first install usb-modeswitch

/etc/usb_modeswitch.conf must exists & contain everything below:

DefaultVendor= 0x12d1
;DefaultProduct= 0x1003
DefaultProduct= 0x1446
;DetachStorageOnly=1
;HuaweiMode=1
MessageEndpoint=0x01
MessageContent="55534243000000000000000000000011060000000000000000000000000000"

/etc/udev/rules.d/15-huawei-e1762.rule also must exists with this content:

SUBSYSTEM=="usb", SYSFS{idProduct}=="1446", SYSFS{idVendor}=="12d1", RUN+="/usr/sbin/usb_modeswitch"

finally, run usb_modeswitch