The zBoost YX230 car cell phone booster uses two antennas and a small amplifier to create a “cell zone” inside your car.
The external antenna grabs a nearby cellular signal, and transmits it to the amplifier. The amplifier sends a beefed-up signal to the second antenna which repeats the signal inside your car for dramatically improved reception.
Extends cell phone range (up to 10 times the signal strength), improving the signal strength for both voice and data
Battery life is improved because the phone doesn’t work as hard to find a good signal