Dear Oghuma,

very interesting topic. Data analysis telecom are using for the the campaign development, planning for call rate scheme, like myfive, Sms Packs, data pack, Corporate offer, international call offer, bonus packages within same network, weekly budget plan, recharge scheme  etc these all are some of campaign launched base on big data analysis--they benchmark the subscriber uses data and then start to think for the campaign.

Hope this will give you some idea on your research.