In the apparatus for calculating a communication fee of a user based on big data analysis for a communication product and providing the calculated fee, a user receiving user information including at least one communication device of the user is registered information register; a current payment amount inquiry unit for inquiring a communication amount currently being paid by using information on a communication product that a user requesting communication cost consulting is subscribed to; a communication fee calculation unit for allocating a subscription-enabled communication product for each communication device of the registered user information, and calculating a communication fee for the allocated communication product; and a payment scheduled amount calculation unit for calculating a communication amount to be paid later by applying a discount benefit using the user information and the calculated communication fee for each communication product. it's about
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