Abstract
Recent communications environment significantly expand the mobile environment. Prepaid mobile services for 3G networks enables telecommunication to sign up new users by utilizing the latest in converged billing technologies. The worldwide mobile communication market is exploding, and 50 percent of subscribers are expected to use prepaid billing . Prepaid services are driving mobile communication into emerging markets such as South America, Eastern Europe, Asia, Africa and Gulf Countries. Prepaid phone service requires a user to make payment before calling. It is quite common to get prepaid SIM cards on every major Network. This paper discuss about various prepaid techniques, challenges and countermeasures in prepaid mobile communication system .
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