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Cel-Fi PRO 3G/4G/LTE Smart Signal Booster for AT&T

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Item Number: 6588



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5GStore has reliable signal booster units that are easy to set up, network safe and offer best-in-performance gains, like the Cel-Fi PRO 3G/4G/LTE AT&T Signal Booster. Cel-Fi by Nextivity offers the only intelligent boosters that are wireless-in, wireless-out; in addition, multiple units of these Cel-Fi PRO AT&T boosters can be utilized in large office areas — with no signal interference. Give the Cel-Fi PRO AT&T signal booster a try — Cel-Fi by Nextivity is known for its award-winning products that help make the most of your networks.

This plug-and-play solution is available to help improve weak signals in homes and in business spaces — wherever your signal needs a charge. This indoor repeater kit works on the AT&T U.S. network and covers up to 13,000 square feet. Cel-Fi PRO AT&T wireless signal booster features an easy-to-read LCD color interface, is fully self-contained and self-configuring and requires no additional external antennas or wiring. Installation is easy: just plug it in to boost your indoor cellular coverage across four concurrent bands with 100 dB of gain, which is optimized with a software-based coverage pattern for better performance.

Amplifier Features:

  • Coverage area*: up to 13,000 square feet
  • All-in-One Kit? YES
  • Compatibility: This amplifier supports 3G, 4G, LTE and VoLTE for AT&T only. It is NOT compatible or approved for use with ANY other carrier.
  • Installation: Cel-Fi doesn't require the installation of external antennas, bulky coaxial cables, handset registration, or a configuration setup by the user. In fact, Cel-Fi intelligently and automatically senses and adapts to its environment-including to changes made by your carrier, or to changes caused by nearby equipment like Wi-Fi, or other Cel-Fi devices.
  • pdf download the Cel-Fi PRO datasheet

*Many factors will influence the actual coverage area you will see from a repeater, including layout/floorplan, construction, and original un-amplified signal strength. Depending on your situation, you may see more or less coverage than the estimates listed here. It is not possible to guarantee coverage area.

celfi pro install

Installation notes:

  • There must be at least one bar of usuable signal at the window in which you install the Network Unit. 

Features & Benefits:

  • Supports WCDMA/HSPA+/LTE(FDD).
  • Up to 100dB of system gain in each band, simultaneously.
  • Wirelessly (5GHzU-NII) linked Network and Coverage Units.
  • Peaceful coexistence with adjacent Wi-Fi (2.4GHz & 5GHz) and femtocell devices.
  • Software-based optimization of integrated antenna coverage pattern which maximizes system gain and provides improved coverage.
  • Automatic Gain Control based on real-time echo-cancellation.
  • Adaptive signal equalization.
  • Nextivity's 3rd-generation (ARES) chipset with 6 core processor
  • Up to four (4) cellular bands supported. Cel-Fi PRO boosts service in the U.S. for AT&T only.
  • Support for E-UTRA bands 2 (1900), 4 (1700/2100), 5 (850) and 12/17 (700).
  • Support for 3GPP Rel.10 features.
  • Seamless integration with the Macro networks. No handset registration, GPS signal requirements, or call handoff problems.
  • Secure and ciphered provisioning.
  • Max EIRP; 10dBm downlink & 24dBm uplink, per band.
  • Network-Safe software prevents uplink system gain from exceeding path loss and eliminates unnecessary rise in base station noise level.
  • Uplink Muting Mode automatically shuts down uplink cellular transmissions when no active user equipment is detected.
  • System shuts down upon Operator’s network command or failure detection.
  • Users can be assured communications are secure, through the encrypted wireless link.
  • Registration, Software Updates and Tech Mode support with the Wave mobile app allowing installer to easily collect network information.
  • Enables the system to communicate with smart phones and the Cel-Fi Wave mobile app for improved functionality.
  • Cel-Fi remains fully functional, even when there are other RF emitters present.
  • Subscriber devices enjoy significant improvements in battery life.

Package Includes:

  • Network Unit
  • Coverage Unit
  • 2 Power Supplies
  • 2 Mounting Brackets
  • Quick Start Guide


  • RF Specifications:
    • 1st channel: B12
      • Frequency: 729-746 & 699-716
    • 2nd channel: B4
      • Frequency: 2110-2155 & 1710-1755
    • 3rd channel: B5
      • Frequency: 869-894 & 824-849
    • 4th channel: B2
      • Frequency: 1930-1990 & 1850-1910
  • Environmental:
    • Operating temperature: 0° to 40°C
    • Storage temperature:-25° to 60°C
    • Relative humidity: 5% to 95%, noncondensing
  • Power:
    • 12VDC via external supply (two included)
    • External Supply: 100 to 240 VAC, 47-63Hz
    • Power consumption less than 25W per unit
  • Physical Specification:
    • Network Unit: 179 x 155 x 110mm, Weight 19oz.
    • Coverage Unit: 160 x 164 x 79mm, Weight 16oz.
  • Certifications & Compliance:
    • CE
    • FCC Parts 15, 20, 22, 24, 27
    • RoHS (six of six) / WEEE (2002/96/EC)

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 the FCC or a licensed wireless service provider.
WARNING. E911 location information may not be provided or may be inaccurate for calls served by using this device.
Please note, the four largest carriers - AT&T, T-Mobile, Verizon and Sprint - and more than 90 regional carriers have given blanket consent for use of all boosters certified to the new FCC standards.

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All Reviews (11)

Page 1 of 2 12

Only customers who bought this item from 5Gstore can write a review - these are all verified 5Gstore purchases

Date Added: 03/14/2018 by Russell H. (Hockessin, DE)
I just received it but it seems to work fine

Date Added: 12/18/2017 by Eric S. (Larose, LA)
This signal booster was the most effective and least expensive option for our office!

Date Added: 04/27/2017 by Jan M. (Melville, NY)
The product was recommended for poor reception in our office. After working with the 3G store team we were able to fine tune and adjust the location and settings which greatly improved our connectivity issues. I would recommend the product and team.

Date Added: 09/29/2016 by Mohamad H. (Odessa, FL)
Compared to the ATT Microcell the unit is more reliable however the space covered by the enhanced signals is slightly bigger area compared to Microcell. Overall it's a reasonable unit, a little expensive construing the square footage it covers is not 13000sqft!

Date Added: 09/12/2016 by Juan R. (Anasco, PR)
I was able to place the order by phone with excellent support to overcome difficulties to place my order online and charge it to a credit card with an address from Puerto Rico.

Date Added: 08/10/2016 by Mark M. (Duluth, MN)
It does not boost AT&T LTE signal at all, it does not even find it. All it does is 3g and 4g. My iPhone 6s gets 2 bars of LTE at the window where I setup this device. The Cel-Fi Pro only finds a 4g signal (the app shows it as 3g for some reason). I have tried moving it all over my upper floor without any difference. It does boost the 4g signal to 5 bars, but without LTE it is an expensive paperweight. I am sending it back as soon as I can get a RMA. Beware if you are thinking about getting one.

5Gstore Comments:
We're sorry it's not working for you! Please give our tech team a call at 833-547-8673 ext 3 so we can troubleshoot with you - there are some things we can help you with to see if we can get it working. If it doesn't work out, we'll be glad to assist you with an RMA.

Date Added: 08/09/2016 by Melissa B. (MONTICELLO, MS)
works as described.

Date Added: 07/06/2016 by Linda G. (Sanford, MI)
Before the booster I had 1 failing bar, now I get 3 continuous bars, it has improved the signal in my house consistently.

Date Added: 06/03/2016 by FIT B. (Scarborough, ME)
Device working fine in our office, our IT guy was pleased on how easy it was to setup. Everyone in the office is now enjoying a strong signal. Life is Good

Date Added: 05/26/2016 by Connie I. (BURKVILLE, AL)
Device working great signal went up to 5 bars, had to play around with them a bit to get them to line up. Everything working as it should, we have order 6 already for our other stores.

Page 1 of 2 12

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Q & A
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Does the Cel-Fi Pro booster work with 5G?

No, this only works on 3G/4G/LTE.

Can the Cel-Fi network and coverage units be placed side by side and within six feet of a micro cell tower, router or modem?

The network unit (NU) and coverage unit (CU) need to be separated in order for the system to work. The farther the two units are apart, the more signal boost. Once the signal coming from the coverage unit hits the network unit, the system has to reduce its output. So if you have both units within 6 feet of each other, the coverage unit could only boost out 5 feet or so of signal to avoid interference. While the NU and CU require separation, there is no issue with placing either device next to modems, routers, etc as they will not interfere.

Can the Cel-Fi PRO system be used outdoors?

No, this is an indoor system only. Please refer instead to the Cel-Fi Go X system:

Will the Cel-Fi PRO for AT&T boost multiple devices at the same time?

Yes, the Cel-Fi PRO will boost signal to ALL nearby AT&T devices.

How many simultaneous phone calls can the Cel-Fi Pro for AT&T support?

The Cel-Fi PRO for AT&T supports 60 active users simultaneously.

Are there any Cel-Fi kits that support more than 1 carrier?

No, they are carrier specific, which allows them to bypass the standard FCC rules that amplifiers fall under. This includes rules regarding the amplifier gain. While most amplifiers max out around 72db, the Cel-Fi kits max out at 100db. This increased gain not only results in a potentially stronger signal, but also to support much larger coverage areas (72db gain systems typically cover up to 6000 sq ft, while the Cel-Fi is capable of up to 13000 sq ft).

Can I use more than one Cel-Fi unit if I need to support multiple carriers?

Yes, unlike the traditional cabled kits from SureCall and weBoost, the Cel-Fi kits can be used in the same location without causing interference between the systems.

Purchasing this product gets you access to the following exclusive 5Gstore resources:
Cel-Fi: Installing multiple systems in 1 location
Cel-Fi: How to Register via Computer 06/07/2017
Cel-Fi: How to Register via Wave App 06/07/2017
Cel-Fi Wave Application 04/26/2016
Cel-Fi Pro Troubleshooting Error Codes 04/26/2016

If you already purchased this item from 5Gstore, Log In to the support portal to access these downloads.