What you need depends on what the issue is with using the device. Is it an issue with the service from Verizon? Does Verizon service work in your house/area? Is it an issue with WiFi? Verizon has a device that uses your broadband internet connection to provide cell and cell data service to your phone. https

/www.verizonwireless.com/home-services/hotspots/network-extenders/
You'd have to work with Verizon though about your issues. An extender takes a signal, and re-generates it again using the original signal, a booster is pretty much a stronger antenna or an amplifier that strengthens the original signal. Think of it as a bucket you try to throw 20 feet. An extender is two people tossing the bucket 10 feet to one, then the...