Cell Phone signal booster provides the ultimate solution in any area where cellular communications can not function well due to signal leakage. The repeater device features easy installation and operation, built-in indoor antenna and no interference. It could also improve indoor electromagnetism environments, extend the life of the cellular battery and reduce the radiation of cellphones. A cell phone repeater is ideal for home, home and office. The device is characterized by easy installation and operation and no interference. It is the ideal device for amplifying the mobile phone signal. A mobile phone repeater could also improve indoor electromagnetism environments, extend the life of the cell battery and reduce the radiation of cellphones.