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Wilson Sleek 4G-A Signal Booster for 3G and AT&T & US Cellular 4G LTE - 815326 [700A/800/1900mhz]

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Item Number: 3749



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This amplifier has been discontinued and is no longer available. See the other Sleek models.

Fast Facts About This Product:

  • This repeater kit is best for: AT&T and US Cellular 3G or 4G users who need to boost signal to one phone or hotspot (like the Elevate Hotspot) in a car, truck, or SUV. (can be used indoors with accessory kit - sold separately)
  • All-in-One Kit? YES
  • Compatibility: This amplifier supports 800mhz/1900mhz networks (which includes most voice/2G and 3G providers in the US) as well as the 704-746mhz AT&T/US Cellular 4G LTE network. Supported carriers/networks include:
    • Verizon 2G/3G
    • Sprint 2G/3G
    • AT&T 2G/3G/4G/LTE
    • US Cellular 2G/3G/4G
    • Datajack and Virgin Mobile 3G
    • T-Mobile and Cricket 2G
    • Does NOT work with 4G LTE from Verizon/Sprint/MetroPCS, WiMAX (Sprint/CLEAR 4G), Nextel/iDen, or AWS (T-Mobile 3G/4G and Cricket 3G)

Do a site survey before buying this amplifier! If you're purchasing this to use in just one location, we strongly recommend doing a site survey first to determine whether the amplifier will help your signal and performance and to give you an idea of what kind of results you can expect from it. Start here: Will an Antenna/Amplifier Help Me?

If your signal is extremely poor (-108db or worse), an amplifier may not help you. There must be some usable signal available for the amplifier to boost for it to be effective.

Now there’s a mobile signal booster for those using AT&T LTE devices – the Sleek 4G-A from Wilson Electronics. This powerful signal booster helps you stay connected by providing a strong reliable signal in weak-signal areas, reducing lost connections and speeding data rates. It boosts both voice and data communication – making it perfect for phones and wireless hotspots like the AT&T Elevate.

The Sleek 4G-A works with all devices on most conventional 2G and 3G networks as well as the AT&T 4G LTE network. Wilson signal boosters feature cell site protection technologies refined over more than a decade of research and development. Optional indoor accessory kit (sold separately) allows use at home or in the office. FCC type accepted.

How it works: The magnetic mount antenna picks up the cellular signal and sends it through the cable to the cradle amplifier. The signal is then boosted and pushed out to the phone or device sitting in the cradle.

Installation diagram:

not to scale. representative graphic only (appearance of actual components may vary)

Installation notes:

  • The magnetic mount antenna MUST be connected to something magnetic or it will not work! If you're using the Sleek in a car/truck, you can simply stick it on the roof of the vehicle. For home use, we recommend buying the indoor accessory kit (sold separately), which includes a window mount that provides a magnetic base for the antenna.
  • Your phone or hotspot must be in the cradle to benefit from the signal boost.
  • For more details, you can download the installation manual (PDF)


  • Boosts AT&T and US Cellular 700 MHz LTE as well as 3G & 2G cellular signals on 800 MHz & 1900 MHz
  • Boosts both voice and data communications
  • Provides a strong, reliable signal in weak signal areas
  • Faster, cleaner 3G & 4G data transfers
  • More than 20 times the power of your cell phone alone
  • Simple DIY installation
  • Extends battery life – amplifier enables phone to work at reduced power
  • Simplifies hands free operation
  • Installs in minutes – no special tools required
  • Package includes everything needed -- plug-and-play
  • Attractive, compact design
  • Adjustable arms to fit most any phone/hotspot (accommodates devices up to 3.25" wide)

The Wilson Electronics Sleek amplifier kit includes:

  • Sleek™ all in one cradle amplifier
  • 4" mini magnet-mount antenna w/ 12' cable
    • Other antennas can be used with the Sleek if you prefer. If you already own an antenna and you'd like to use it with the Sleek, you'll just need an adapter to connect your cable to the Sleek (if your cable ends in FME/Female, you'll need the FME/Male to SMA/Male Connector; if your cable ends in N/Male you'll need the N/Female to SMA/Male Connector)
  • Cigarette lighter power adapter (Use only with supplied cigarette lighter power supply. AC power supply available separately in the home/office accessory kit)
  • USB power cable
  • Installation guide
  • Limited one-year product warranty


Part Number 815326
Frequency 704-746 MHz / 824-894 MHz / 1850-1990 MHz
Gain 20dB / 20 dB / 26dB
Max Uplink Power 750mw / 1240mw / 1800mw
Noise Figure 5.0dB nominal / 3.0 dB nominal / 3.0 dB nominal
Flatness ±4dB
Power Requirments 5V DC
Antenna Connector SMA Female
Dimensions 2.25 x 4.25 x 2.5 (inch) 5 x 9.5 x 5.6 (cm)
Weight 2.5 (oz) / 0.07 (kg)

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All Reviews (4)

Only customers who bought this item from 3Gstore can write a review - these are all verified 3Gstore purchases

Date Added: 04/10/2014 by Maria M. (Pleasanton, TX)
The Wilson Sleek 4G-A Signal Booster is the greatest gadget that I research in an effort to help signal around the country side around Texas. Thank you Wilson Sleek 4G-Signal Booster. It is great and all the information about how to use it was there and easy to follow.

Date Added: 09/29/2013 by John P. (Ingram, TX)
The Sleek works as I hoped it would to boost and stabilize a very marginal signal. I use it for the HTC One to boost the data signal for use as a hotspot. Without it, I was unable to obtain an adequate signal to conduct business on the laptop. It works as described. AFter a couple of weeks use, it boosts the signal to use the cell phone as intended. The cell phone has to be in the cradle for use with the speaker phone or blue tooth earpiece. The main thing is that it does work. It worked so well, I order another sleek for the DW and upgraded to a 12" antenna. Both Sleeks are working great. One in the front of the Motorhome and the second sleek in the back bedroom. Good product, and fast shipping and response from 3g Store. Good customer service.

Date Added: 08/05/2013 by Rex T. (Ellijay, GA)
I was very impressed with the sales person that help me with the selection of this product. He was absolulely the Best. The Wilson sleek 4g-signal booster that i bought has eliminated all the dropped calls that i was having in my normal driving area due to my cell phone reception. Thanks 3Gstore y'all are great!

Date Added: 01/27/2013 by Richard L. (Colgate, WI)
Living in a rural area I had very few options for internet service. After purchasing a new smart phone and US Cellular 4G data package with Tethering to my home computers I thought I had the solution. Unfortunately at home I could not receive a 4G signal most of the time and even then it would not give me any data service. I purchased the 4G-A along with the Home/Office accessory kit and then had consistent 4G and good data service. I then purchased the 18" outdoor omni antenna and increased both the signal strength and doubled my download speed. I likely will purchase a Yagi antenna and try for more. AWESOME products that I have recommended to friends and business associates. And 3Gstore has been very helpful and shipped same day. Thanks 3GStore!!!!!

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Questions & Answers

Why do I need a magnetic base for the antenna?

Wilson Electronics provides a two-year warranty on all of their products.

We recommend downloading the installation manual (PDF) before ordering.

Purchasing this product gets you access to the following exclusive 3Gstore resources:

Sleek Installation Guide 02/28/2013

If you already purchased this item from 3Gstore, Log In to the support portal to access these downloads.
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