My micromax MMX352g 3G internet modem was working in Ubuntu 12.04 with the help of this post: http://imacify.com/2012/10/how-to-configure-micromax-3g-modem-on-ubuntu-12-10 .
And in 14.04 Ubuntu automatically detected the modem.
But in Ubuntu 15.04 nothing of them works at all. I have asked this question in ubuntuforum but they have told me to use Ubuntu 14.04 LTS instead.The link is here http://ubuntuforums.org/showthread.php?t=2280317
P.S-I have noticed that Ubuntu 15.04
lsusb output was changed than Ubuntu 14.04.In 14.04 it was
1c9e:9605 OMEGA TECHNOLOGY
,but in 15.04 it is
1c9e:f000 OMEGA TECHNOLOGY. So in 15.04 Ubuntu only detects the memory card slot but not the modem. Is it possible to change