Ensure you and your passengers can enjoy strong, reliable 4G connectivity with this weBoost Drive 4G-M 470108 booster, which enhances cellular signals in your vehicle to prevent dropped calls and lost connections and enable high-speed downloads.
I got this because I had trouble getting signal up north from were I live. Installed it ,went up north and I had better signal than before so I shut off unit and had no signal it sure makes a difference