The weBoost Drive 4G-X (refurbished) is the most powerful car cell phone signal booster for vehicles in USA.ÊThis pro model provides 2x the uplink power which means it reaches up to 60% farther than other car boosters to the nearest cell tower. With up to +50 dB gain of amplification, it greatly enhances 3G & 4G LTE cell service for all your wireless devices (smartphones, notebooks, hotspots, etc.) on any carrier.