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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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The Cel-Fi Pro Smart Signal Booster is for homeowners and businesses looking to improve their cellular signal indoors. This repeater kit works on the AT&T U.S. network to enhance voice and data transfer on their 2G, 3G, LTE and VoLTE bands.
Cel-Fi Pro provides coverage up to 13,000 square feet, making it ideal for large homes and offices. Multiple units of the Cel-Fi AT&T booster can be deployed in large offices and will not interfere with coverage strength.
If you are sick and tired of poor reception, dropped calls and other cellular issues with AT&T where you work or live, this product offers a simple solution. It provides plug-and-play ease of installation. Besides working as an LTE booster, AT&T 4G and 3G signal bars can increase. With this 3G/4G/LTE signal booster, AT&T reception can be improved easily and quickly.
Cel-Fi boosters are radically different from traditional repeaters. These intelligent boosters are the only ones that are wireless-in/wireless-out. The network unit receives the signal from the mobile network, requiring as little as one bar of signal (-104 dBm RSCP and -120 dBm RSRP). This signal is relayed wirelessly to the coverage unit, which amplifies it for up to 100dB of gain.
This 4G signal booster AT&T device automatically encrypts the wireless link to keep all communication secure. Up to four different E-Ultra cellular bands are supported by the Smart Signal Booster, which remains fully functional around other RG signal emitters and WiFi devices.

Cel-Fi is known for products that are easy to set up. This AT&T 4G signal booster doesn't require the installation of external antennas or bulky coaxial cables. It also doesn’t need 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 WiFi or other Cel-Fi devices.
A software-based coverage pattern optimizes gain for better performance. Using an AT&T booster from Cel-Fi simplifies signal boosting and can significantly increase your mobile broadband coverage area.

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)

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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.

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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

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