Cel-Fi DUO+ Smart Signal Booster

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  • Coverage up to 15,000 sq. ft.
  • PLUG & PLAY: If you can use an electrical outlet, you can easily install this kit
  • Boosts In-building 3G/4G/LTE Signal
  • Works for all phones on Freedom Mobile
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Cel-Fi DUO+ Smart Signal Booster
Cel-Fi DUO+ Signal Booster Details

The Cel-Fi DUO+ Smart Signal Booster for Freedom Mobile by Nextivity is part of the next generation of intelligent signal boosters. All Cel-Fi products are designed and developed using the most advanced radio frequency and signal processing technology.

It greatly enhances 4G, LTE, and 3G cell service for all your wireless devices (smartphones, notebooks, hotspots, etc.) on Freedom Mobile for any home or office up to 13,000 sq ft.

The Cel-Fi DUO+ has several advantages over traditional signal boosters:

  • Plug and play setup: just plug in the Network and Coverage units and get better signal.
  • Monitor performance with the Cel-Fi WAVE app.
  • Extreme power good for everything from apartments to large homes.

Unlike multi-carrier signal boosters with a limit of +70 dB, Cel-Fi’s single-carrier solution can boost signal up to +100 dB. That's a difference of +30 dB or up to 1000x more power compared to multi-carrier boosters.

Eliminate dropped calls, slow data, and poor Freedom Mobile signal from your life with a Cel-Fi DUO Smart signal booster.

  • Boosts 3G & 4G LTE for any home or office up to 15,000 sq. ft.
  • Works for all phones & cellular devices, Freedom Mobile only.
  • Complete kit: all parts included, easy install.
  • No monthly fees, no need to be connected to wifi, it just works.
  • Industry-leading design & performance by Nextivity Cel-Fi.

Cel-Fi Wave App

Cel-Fi WAVE is the software application and cloud-based portal solution used for registering, setting-up, optimizing, remotely monitoring, and updating the Cel-Fi hardware. Available on iOS, Android, Tencent, PC, and Mac devices.

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Who is this for?

The Cel-Fi DUO+ Smart cell phone signal booster is for:

Those who have large apartments.

Those in rural areas who struggle with Freedom Mobile signal.

Anyone with a large home, office, warehouse, or other building who wants better, more reliable Freedom Mobile signal.

Technical Specifications
Nextivity Cel-Fi Duo+ Smart Signal Booster
Model D32-2/4/12
Frequency Band 12, 700 MHz; Band 4/66, 1700/2100 MHz (AWS); Band 2,1900 MHz
Max Gain 100 decibels (dB)
Power 100-240 V AC, 47-63 Hz, 12 V DC
Dimensions Network Unit 6.24 x 5.75 x 2.32 in / 15.85 x 14.6 x 5.9 cm
Dimensions Coverage Unit 6.24 x 5.75 x 2.32 in / 15.85 x 14.6 x 5.9 cm
Weight Network Unit 1.23 lbs / 0.56 kgs
Weight Coverage Unit 0.86 lbs / 0.39 kgs


This is a CONSUMER device. BEFORE USE, you MUST REGISTER THIS DEVICE with your wireless provider and have your provider's consent. Most wireless providers consent to the use of signal boosters. Some providers may not consent to the use of this device on their network. If you are unsure, contact your provider. You MUST operate this device with approved antennas and cables as specified by the manufacturer. Antennas MUST be installed at least 20 cm (8 inches) from any person. You MUST cease operating this device immediately if requested by FCC or a licensed wireless service provider.

Kit Includes
Cel-Fi Duo+ Network Unit Amplifier
Cel-Fi Duo+ Coverage Unit Amplifier
Power Supplies
Mounting Brackets
Screws & Drywall Anchors

Installing the Cel-Fi DUO+ is remarkably easy.

  1. Set up the Network Unit near a window with the strongest Freedom Mobile signal and plug it into an outlet.
  2. Set up the Coverage Unit where desired, preferably as far away from the Network Unit as possible to avoid oscillation. Plug it into an outlet.
  3. Download the Cel-Fi WAVE app to register and set up your booster.
  4. Enjoy your boosted signal!

The Nextivity Cel-Fi Duo+ is easy to install. Everything is included in the kit. Our trained product specialists can also assist if you have any questions. Call 1-800-638-6336 or email sales@signalboosterscanada.ca.

Frequently Asked Questions

How Do I Set the Cel-Fi DUO+ Up?

There are a few things to consider before setting up your Cel-Fi DUO+.

First, locate the area in your home with the strongest cell signal. Preferably, this on the second or third story near a window. Place the Network Unit there, and plug it in.

Second, find an area as far away as possible, preferably with some vertical separation, from where you placed the Network Unit. Place the Coverage Unit there.

Setting up with the App

Now that you've physically set up the DUO+, you’ll need to activate it with the Cel-Fi WAVE app.

  1. Register your booster. This is a legal step and will tie your app to your booster.
  2. Enjoy your boosted signal!

The app has many other features, allowing for remote monitoring, optimal antenna setup, and more – however, these features are all optional.

Please call us at 1-800-638-6336 for a free consultation and answers to any other questions you might have.

How Does the Cel-Fi DUO Boost My Signal?

The DUO+ creates a bubble of strong signal between the two units, so make sure there is as much separation as possible.

I Want to Change Carriers. Will the Cel-Fi DUO Still Work for Me?

This booster will only work with Freedom Mobile.

Where Do I Place the Network Unit and Coverage Unit?

Place the Network Unit in the place where signal is strongest, as high as possible.

Place the Coverage Unit as far away as you can from the Network Unit, with 100 dB of loss being the maximum distance away they can be placed.

Can I Use This Without Downloading the WAVE App?

For a basic setup of the Cel-Fi GO-X, use of the WAVE app is required. Once the booster is registered, you no longer need the app if you do not want to take advantage of its enhanced features.

What is the Return Policy?

We provide a 30 day money back guarantee and a two-year warranty on all Cel-Fi DUO+ units.

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