seting modem zte ac2726
$ lsusb
Bus 005 Device 002: ID 19d2:fff5
$ sudo dpkg -i usb-modeswitch_1.0.2-1_i386.
deb
$ lsusb
Bus 005 Device 004: ID 19d2:fff1 <- Notice the change in product id
$ sudo modprobe usbserial vendor=0×19d2 product=0xfff1
$ sudo wvdialconf
$ sudo vi /etc/wvdial.conf
Phone = #777 (devent of your ISP or card number)
Password =
Username =
Baud = 460800
Stupid Mode = 1
New PPPD = 1
Tonline = 0
#(you have to edit there)
$ sudo wvdial
(have to connect