Using a Huawei LTE modem with Linux

I was having some issues getting a Huawei E3276s-500 LTE modem that I purchased to work with Linux Mint.  The modem worked with windows, and it worked with linux after initiating in windows.

Following instructions for a similar modem I was able to get the modem to work without much issue.  I’ve added the following rule to /etc/udev/rules.d/70-huawei_E3276s.rules to use usb_modeswitch to initiate the modem when plugged in:

ACTION=="add", SUBSYSTEM=="usb", ATTRS{idVendor}=="12d1", ATTRS{idProduct}=="14fe", RUN+="/usr/sbin/usb_modeswitch -v 12d1 -p 14fe -M '55534243123456780000000000000011062000000100000000000000000000'"

Now the modem connects without issue when plugged in.  There are some features of the modem that are still not fully supported such as sending & receiving SMS messages to manage a prepaid account and seeing what wireless technology that the modem is currently using.  For now the modem is working well connecting to the Telcel network in Mexico.

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