How much does a cell phone booster increase cell phone coverage?

Coverage achieved by cell phone boosters depends on a number of factors including the make and model, indoor building materials, antenna placement and outdoor signal level. Fusion4Home signal booster will, for example, provide a maximum coverage of 4000 square feet. The 4000 sq. ft. will be achieved in an open space with optimal signal strength at the external antenna. If the outdoor signal level is however low, the coverage will only be one small room. In this case, a directional external antenna booster kit is recommended.