Cel-Fi PRO Indoor Smart 4G LTE Signal Booster, Compatible with Major Carriers

Cel-Fi PRO Indoor Smart Cellular Signal Booster for AT&T
Model: PRO
Availability: Discontinued

***DISCONTINUED***  This item is discontinued. No replacement has been assigned. Contact Westward Sales to discuss your options.


Cel-Fi PRO Indoor Smart Signal Booster for 3G/4G LTE Networks

Weak signal, dropped calls, and diminished download speed has always been the misery of cellular subscribers. Cel-Fi by Nextivity resolves connection issues with the easy-to-setup PRO smart signal booster for AT&T, Verizon, T-Mobile, US Cellular, and GCI Alaska users. The Cel-Fi PRO greatly improves WCDMA, HSPA+, and LTE mobile service by eliminating dead zones. It increases voice and data coverage and enhances networking quality. Because the PRO is so quick to set up, you'll immediately experience better LTE signal quality for your phone - a boost from one to five bars is possible.

Cel-Fi PRO Performance

Patented echo cancellation algorithms enable the PRO to offer clear signal levels for an indoor coverage area up to 13,000 square feet. It's the highest performing, certified signal booster in its class. With 100 dB of gain, the Cel-Fi PRO will not only improve cellular service across four concurrent bands, but it will also reduce your cell phone's power requirements, extending its battery life. The PRO does not require the installation of external antennas or cables; nor, does it require a sophisticated setup routine by the user. The PRO is self-contained and self-configuring.

The PRO consists of two compact units: a Coverage Unit (CU) and a Network Unit (NU). Simply plug both into a power outlet, then connect with the Cel-Fi WAVE app and instantly improve your cellular signal. The NU senses and captures four LTE bands from the closest cell tower and relays those simultaneously to the CU. Then the CU transmits the boosted signal throughout the home or business. The units communicate over a 5 GHz wireless link. The PRO coexists with other wireless electronics and does not interfere with nearby cordless phones, 2.4 and 5 GHz Wi-Fi, femtocells, and other cellular devices. The total enhanced coverage area equals twice the distance between the NU and the CU. The LED will indicate the best span to maximize coverage.


Cel-Fi WAVE is a smartphone app and cloud-based software platform packed with features to help you get the best performance from your Cel-Fi PRO. The WAVE portal and app dashboard shows signal strength and real-time data and performance metrics. It facilitates registration (if needed), firmware updates, commissioning, installation, optimization, and troubleshooting.

Cel-Fi WAVE app

Glance-able view to the state of your Cel-Fi environment, including the Boost Strength indicator. It features:

Change the default network operator, select the booster technology (3G, 4G), setup an external antenna, configure the antenna position, and more.

Advanced Mode:
Get real-time data and performance metrics for troubleshooting devices.

Booster Updates:
Keep your Cel-Fi Booster up-to-date as new software versions become available.

Register (when required):
Easily activate and register your Cel-Fi Booster.

Cel-Fi Pro Key Features

  • 5-minute plug-and-play setup
  • Up to 100 dB gain for voice and data
  • Integrated antennas boost up to four bands of 4G LTE
  • 1000x stronger signal than bi-directional amplifier (BDA) systems
  • Coverage and capacity up to 13,000 square feet
  • Maximized signal-to-noise (SNR) ratio provides better data rates
  • Remote monitoring and management using the WAVE phone app
  • Network safe - carrier and FCC approved
  • Choice of AT&T, US Cellular, and GCI Alaska
  • Optional PRO EXA supports an external outdoor antenna
  • Included in the box are Network Unit, Coverage Unit, 2 power supplies, and 2 mounting Brackets
  • Pro-X Cable adapter sleeve accessory sold separately

The Cel-Fi PRO Smart AT&T cell signal booster is for:

This signal booster is a great addition to homes, offices, retail stores, and other indoor locations. It allows for completely uninterrupted device use wherever the user may roam throughout the space. In a business environment, ensuring a strong, consistent network signal is a vital component to keep business workflow running smoothly. The Cel-Fi PRO Smart AT&T cell signal booster easily integrates with your existing network system to provide improved coverage throughout the indoor space.

Cel-Fi Pro Installation

Set up is easy, requiring no tools or special knowledge of cellular networks. First, use your phone to find the best cellular signal. Typically you will get the best signal near a window. Second, place the Network Unit (NU) in the location where you get the best cellular signal. Third, place the Coverage Unit (CU) in the location where you need improved coverage. And finally, use the Cel-Fi WAVE app to finish setup and activation.



P34-2/4/5/12, AT&T compatible, boost bands 2, 4, 5, and 12
P34-2/4/5/12-EXA, External antenna connector

The Cel-Fi PRO is carrier-specific. Order model P34-2/4/5/12 for AT&T 4G LTE to boost download and upload frequencies on bands 2 (1900 MHz), 4 (1700/2100 MHz), 5 (850 MHz), and 12 (700 MHz). This model also supports US Cellular and GCI Alaska networks. The Cel-Fi PRO EXA option provides an antenna connector for adding an external donor antenna to the NU. Often, indoor locations cannot receive a signal because of cement or metal walls and obstacles. By extending the donor antenna outdoors, a signal can be acquired when it couldn't otherwise be obtained. The EXA option creates new possibilities for the Cel-Fi PRO smart boosters, enabling cellular coverage in hard-to-reach places.


Westward Sales is a certified reseller for Cel-Fi's line of cellular boosters and antennas.

CategoryCellular Booster
Cellular Interface
LTE FrequencyBands 2, 4, 5, 12
CarrierVerizon and T-Mobile
AntennaInternal or External (optional)
Power Consumption< 25 watts per unit
Input VoltageAC / 12 VDC external supplies (two included)
DimensionsNetwork Unit: 7 x 6.1 x 4.3"; Coverage Unit: 6.3 x 6.5 x 3.1"
WeightNetwork Unit: 19 oz, Coverage Unit: 16 oz
Operating Temperature0° to 40°C
Humidity5% to 95%, noncondensing
CertificationsCE, FCC Parts 15, 20, 22, 24, 27; IC; EAC; R&TTE 1999/5/EC; R&TTE 1999/519/EC; EN 60950-1:2006+ A11/A12/A1/A2; EN 301 489-23 v1.5.1; EN 301 489-17 v2.2.1; EN 301 908-1 v5.2.1; EN 301 908-11 v5.2.1; EN 301 908-15 v5.2.1; EN 301 893 v1.7.1; EN 62311 (2008)
Download NameFile Size
Cel-Fi PRO Datasheet496.87KB
Cel-Fi PRO Quick Start Guide2.79MB