In an attempt to attract new customers and keep existing BlackBerry customers connected with the latest one, Bharat Sanchar Nigam Limited (BSNL) special Unlimited and Limited plans for BlackBerry Z10 smartphone running on latest BlackBerry 10 operating system. BSNL is the first mobile service operator which has  revised its existing BlackBerry plans  for BlackBerry 10 based BB Z10 Smartphones users...