At first, my modem was only detected by lsusb. It shows like this:
Bus 002 Device 004: ID 19d2:0146 ONDA Communication S.p.A.
Next, I installed usb-modeswitch and created a config file:
vi /etc/udev/rules.d/zte_mf651.rules
then filled it with:
SYSFS{idVendor}=="19d2", SYSFS{idProduct}=="0146", RUN+="/usr/bin/eject %k", OPTIONS+="last_rule"
Now my modem is detected, dmesg shows ttyACM0 and ttyACM1.
After configuring My Provider, it shows on the top menu bar, under the network connection icon. When I clicked it, the modem was connected, but there seems no internet connection.. it can't access internet via browser. While it works fine on windows.
So, How to enable/optimize the internet connection? Is there any specific driver for this device on Ubuntu? Any solution would be appreciated.