I live in Islamabad, Pakistan and when I am outdoor, I use Ptcl EVO with my windows 7 and it works fine, but now when I used it with Ubuntu 14.04, it worked fine initially but after sometime it stopped working (Its light is blinking, and is properly connecting, but the internet is not working). Today I updated and upgraded Ubuntu, installed some software (sublime, chrome, Vim), installed Node, Ruby and Ruby on Rails etc, so I don't know if the problem occurred because of something installed today or what?
Following is the device ID (got from console using lsusb)
Bus 002 Device 010: ID 19d2:fff1 ZTE WCDMA Technologies MSM
Thank You! :)
Edit: I reinstalled Ubuntu and looked for all the changes, the 3g mobile broadband usb stopped working sharply after the libindicator and libappindicator were installed (automatically by ubuntu). Here is the screenshot