[ubuntu] MTS Mblaze not connecting

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http://ubuntuforums.org – For internet, I use MTS Mblaze CDMA USB modem. It was working fine till last week. But now it shows " Connecting " and not getting connected. The process repeats infinitely. At start, it begin with " mobile broadband not enabled " and when I enable mobile broadband, it shows " not enabled " connecting ... Please help me fix this issue. PS : I am from India. (Hardware)