Introduction of Mobile Phone

     Mobile showing as like its name mobility is turning, moving, walking, running, roaming and easily go any where. Mobile phone's other name is Cellular phone. Cellular phone system is a easy way of giving us portable service of telephone.  Each Cellular phone is connected to the base station by a radio link waves, and base station is also connected with Cellular phone using this link, who is a largest machine of network.

     Cellular Phone have a very clever radio link system, radio link connected with base station and each base station covered a limited area who in his range. if phone moves here and there, then connection also cross the related base station, and allow to phone for mobility. if phone turn back in last base station then base station allow again to connectivity to phone.

     It is very expansive to built a cellular network, due to very expansive it costs over to US Dollar 1500000000 and