The Cel‑Fi DUO+ improves HD voice and data coverage for Verizon 4G LTE/XLTE/VoLTE. With up to 100dB of gain, the DUO+ improves cellular service by eliminating dead zones, dropped calls, and slow data inside your home.
The DUO+ is fully self-contained and self-configuring. It requires no external antennas or cables—simply plug in the Network Unit and Coverage Unit and enjoy better signal within minutes.
You can set up the Cel‑Fi DUO+ Wireless Smart Signal Booster system in only a few minutes. (See Documentation, below, to download the quick start guide with detailed installation instructions. The video at the bottom of this page also has an overview of the setup process.)
The Cel‑Fi WAVE app for smartphones and desktop computers allows you to interact with your Cel‑Fi Wireless Smart Signal Booster and access advanced and supplementary features, including:
This is a complete kit, with everything you need to start getting better signal in your home:
The Cel‑Fi DUO+ Wireless Smart Signal Booster system’s Network Unit receives the outside cell signal and wirelessly transmits it to the Coverage Unit. The Coverage Unit amplifies the signal and broadcasts it inside your home. This allows you to stay connected in locations where cell service is poor or where your home’s construction materials interfere with signals from the local cell tower.
This Cel‑Fi DUO+ Wireless Smart Signal Booster system only works with 4G cellular bands licensed by Verizon. It will not improve 3G signal strength or work with AT&T, Sprint, U.S. Cellular, and other cellular networks.
The DUO+ supports up to three cellular bands and relays two simultaneously:
It does not amplify 700 MHz bands 12 or 17, 800 MHz (Cellular) band 5, or 1900 MHz (Extended PCS) band 25.
Not sure which bands your phone uses? Contact us—our technical support reps will be happy to help you!
The Cel‑Fi DUO+ Wireless Smart Signal Booster is designed to amplify cellular transmissions inside a home, large condominium or apartment, or similar space.
The DUO+ Coverage Unit will broadcast improved cellular signal in spherical pattern. The broadcast distance depends on many factors, including inside building materials (cell signals pass through wood framing and drywall more easily than through steel and concrete) and which cellular frequencies are being boosted (lower-frequency 700 MHz signals travel farther than higher-frequency PCS signals.)
Powerful Signal has over a decade of experience designing and installing cellular amplification systems. Please call us at 866‐912‐3444 or contact us online, and we’ll be happy to calculate the coverage area this system will provide in your building and answer any other questions about this amplifier.
For information on federal rules governing the use of consumer cell signal boosters, please see our FCC notice page.
For warranty information on this product, please see our Cel‑Fi warranty information page.