With the increase in the mobile phones there is an increase in the problems associated with the range of the cell phone signals. Cell phone booster is an emerging product which is designed to repair the poor cell phone signal reception area. The metals fitted in the hotels and the walls of the buildings create the restriction for the transmission of the cell phone signals. To cure this problem an electronic device called cell phone repeater is used. Basically these are the bi-directional amplifiers which permanently boost the cell phone signals in your home or in your office or in your moving vehicle. If the cell phone signal reception area is improved then the problem of disconnection of calls would be terminated. Sometimes we repeat the words at the time of talking on our cell phone. It is due to the weak signals present in the environment of the conversation. The use of a cell phone signal booster reduces the problem of dropped calls. Battery life of your cell phone would be increased because the cell phone will have to do less effort to get proper signals again and again. When a cellular repeater is installed, the operating power of your cell phone would be decreased. A cellular antenna consists of three parts. First is an external antenna and the other is an internal antenna. An external antenna catches the signals from outside and an internal antenna broadcasts the amplified signals up to a higher range.