Recently i successfully installed ZTE AC-2726 modem that came with reliance wireless broadband connection. Below are the steps:
Insert the modem in USB interface and see if that gets detected.
Bus 005 Device 002: ID 19d2:fff5
I noticed in /var/log/messsages that the device is detected as usb storage. To make it detected as modem we will use usb-modeswitch package. It is a Switching tool for controlling “flip flop” USB devices.
Download usb_switch package from here and install.
$ sudo dpkg -i usb-modeswitch_1.0.2-1_i386.
Unplug and plugin the modem back.
Bus 005 Device 004: ID 19d2:fff1 <- Notice the change in product id
$ sudo modprobe usbserial vendor=0x19d2 product=0xfff1
You can see in the logs that the modem is detected correctly now. To detect & configure the dialer config run:
$ sudo wvdialconf
Check and add the missing entries in wvdial conf as found below:
$ sudo vi /etc/wvdial.conf
Phone = #777
Password = <Your Password>
Username = <Your Login Name>
Baud = 460800
Stupid Mode = 1
New PPPD = 1
Tonline = 0
Note: Give a valid username & password in the corresponding lines above and uncomment them (Hint: remove “;” from the beginning of the line).
$ sudo wvdial
The connection started working. Note that you can also configure gnome-ppp or kpp to connect.