Seamless Mobility is the most important feature of a wireless cellular communication system. Basically cell phones are used for communication purpose and therefore good cell coverage is needed to make and receive calls. Usually, continuous service is achieved by supporting handover from one cell to another. Handover is the process of changing the channel associated with the current connection while a call is in progress. It is often initiated either by crossing a cell boundary or by deterioration in quality of the signal in the current channel. Mobile IP, too, has to support redirection of data to a new foreign agent after the change of network access. In this case the additional delay caused by the redirection. The shorter the interruption of the service is –up to the ideal case of no service interruption. Minimizing the Delay in handover is better for quality of seamless connectivity anytime; anywhere across communication networks. All mobile phone system supports the seamless handover between base stations. To avoid the additional delay, Mobile IP may use Optimizations such as rerouting of the whole packet in the flow of efficiently retransmission of data with short interrupted service by Fast Retransmit/Recovery Timeout Freezing Technique. Due to the utilization of seamless handover mechanism it reduces the unwanted usage of Spectrum.