As many as twenty years have passed from the day of discovery of cell phone, and there is tremendous increase in cell phone users from the day of its discovery. Now a day’s almost 80% of the total population in the world own a cell phone. With the regular increasing number of cell phone users, signal strength is going on decreasing because of cell phone service providers are not planting new cell phone towers for rapidly increasing cell phone users. For better signal strength many devices has been discovered with passage of time to make the cell phones better. A device named Cell phone signal booster is discovered to improve the overall working and improving the signal reception of cell phones. To reduce the no. of dropped calls and for improving the voice clarity of calls, device called cell phone signal amplifiers is available. Cell phone repeaters also play a role for improving the battery life of the cell phones as the power used for searching signals is saved. Now a day’s a new series of boosters called Wi-Fi- signal boosters is available in the market which help and improve the overall working of the Wi-Fi enabled devices.