The Drive 3G-X M amplifier wirelessly enhances cell signals up to four devices (smartphones, tablets, Kindle, etc). With over 40 years of industry-leading telecom experience, weBoost has been solving frustrating cell phone reception problems with FCC-certified signal boosters for weak signal areas. No more dropped calls, lost connections, and slow internet. Enhances talk, text, and basic 3G internet on ALL phones with ALL carriers while on the waters or docked on the pier. This is the most powerful dual-band 3G car signal booster.