This is a solution to solve poor cell phone signal. If you have a good signal outdoor but poor signal indoors, then this is exactly what you need. 

This product contains a cell phone signal repeater, two antennas and coaxial cable. 

The working principle is that the antenna receives signal from the base station and transmits it to the repeater, which will boost the received signal several times and then transmit it to the other antenna, and the antenna will broadcasts a good signal in the room. 

No more dropped calls and enjoy blazing faster data by one-time purchase. Suitable for apartment, basement, office, garage, etc.