The Cel-Fi DUO+ 4G LTE/XLTE/VoLTE Smart Signal Booster from waveform.com is the perfect way to ensure you stay connected to the world. With up to 100dB of gain, it boosts your Verizon signal up to 32x and supports both LTE and XLTE technologies, so you can be sure of always having a strong, reliable connection. It's easy to install, self-adjusting, and even works with VoLTE, giving