While using a cellular network inactivity timers are used to control and release of radio resources. The timeout time of inactivity timers is called Tail Time. In thus Tail Time wastage of a lot of energy in client devices and a lot of radio assets. To mitigate this problem Idle Leverage method is proposed. This is for batching and pre-fetching which automatically reduce energy consumption. Several modules are there in use namely, Radio optimization, Traffic aggregation, and a tail time mechanism. In this paper, reviews the Tail Time mechanism the important tool used in Idle Leverage process. It helps to developers determine amount of tail time and terminating the transmission rate.