Please Wait...
Log In
free shipping this weekend, use coupon code MEMORIAL

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

No Longer Available

Item Number: 3749




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)

IMPORTANT SIGNAL INFORMATION: If you're purchasing an amplifier for use at one specific location, we strongly recommend doing a site survey first to determine whether the amplifier will help you and to give you an idea of what kind of results you can expect from it.

If your signal is extremely poor (-108db or worse), an amplifier may not be effective - there must be some usable signal available for the amplifier to boost. Conversely, if the signal is too STRONG at your location (-50db or better), the amplifier may shut down to avoid interference with the tower.

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)

Filter Reviews
   Last 2 Weeks (0)   
    64% (89)
    26% (36)
    5% (7)
    1% (2)
    3% (4)
  Show Brief Review
  Show 3Gstore Comments
 Last 6 Months (0) 
All Reviews (138)

Page 1 of 14 123456789

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

Date Added: 12/21/2014 by John A. (Littleton, CO)
The signal booster brought up our data signal from almost unusable to moderately good. We are very happy with it. It is a good solution since we don't have a very good Verizon signal where we are.

Date Added: 11/28/2014 by Frank O. (Fort Lauderdale, FL)
I was very pleased with the improvement in our cell phone signal after we installed the unit. We live on an islland in the Exuma chain of island in the Bahamas and internet service is through a cell phone tower a few miles away. After installing the device we were actually able to do Skype and occassionally Magic Jack phone. We had never been able to do either prior to this time

Date Added: 08/11/2014 by paul j. (boiling springs, SC)
First--I live in the foothills, known for poor reception. I purchased a portable mifi with the best specs and reviews I could find. Drawback was could only get 1 bar consistently--I purchased the Wislon 4g universal smartech III with only a small hope of much improvement. Lo and behold, after folloing the simple directions---I now have continous 3bar and good portion ot the time 4 bars--AMAZING! could not be happier--so, even if you have a weak signal--i suggest giving this unit a try--thx Paul j

Date Added: 07/23/2014 by Alvin B. (Mission, TX)
I bought this Sleek to work with a Pantech MHS291 MiFi. The Sleek did indeed amplify the signal to where I could receive 4G where the MiFi was only getting 3G by itself. I was using a 9 dB trucker antenna with the MiFi directly and was getting random 4G signal at this location.. The Sleek about doubled the increased signal strength compared to the increase of the MiFi with no antenna to MiFi with the 9dB antenna. The issue I have with the Sleek is that with the variety of retaining arms for holding the Phone/Hotspot, none fit the Pantech MHS291 well. The USB cable for the MiFi doesn't clear the hole in the arm, even the taller one. I had to cut the top bar of the arm to make clearance. On the other side, the retaining arm blocks the MiFi Power button making it necessary to remove the MiFi to power it off.

Date Added: 07/05/2014 by al a. (Front Royal, VA)
Bought this to use with our MiFi hotspot because it's the first all-band booster we've found - works for both Verizon 4G and 3G. It roughly doubles our available signal strength, according to the MiFi dashboard. We use an external antenna, not the 5" one supplied. Only gripes would be that none of the supplied brackets will firmly hold our MiFi - they seem to be more smart-phone sized, but a small bungee resolves that - and that for our MiFi, we get the best results when the MiFi is inserted face-down, so the battery is on top. I guess that must put the MiFi antenna closer to the Sleek antenna. Other than those two minor things, we're completely satisfied.

Date Added: 06/28/2014 by Larry M. (CRAZY HORSE, SD)
The arms are removable. Extra arms are included but they are all the same size. No arms for very large phones are included. At this time there is no power supply for use with 110-120v (which I need for my RV) and a higher amperage USB external power supply must be found elsewhere. The 3Gstore staff helped hunt down the correct voltage and amperage needed, so I was able to order the power supply then order this device. Cudos to 3Gstore staff for honesty, integrity, and willingness to find what was needed. NOTE: The correct 100v external USB from Wilson is supposed to be available soon. This device does enable us to boost our signal in a fringe area. When the phone is in the cradle, we no longer lose connections. We have consistent 3 bars where we often went from 3 bars to 0 bars (searching for service) before.

Date Added: 06/25/2014 by Jack F. (MT. ENTERPRISE, TX)
I love my Wilson Sleek 4G Working in a rural area I now have great signal . I don't have to go outside to keep from dropping calls and my internet is very fast using my phone as the hot spot. 3G store delivered on time and in perfect condition thanks

Date Added: 06/25/2014 by Susan G. (Brooklyn, NY)
This made a HUGE difference in keeping my internet connection in the car. With just an internet card I lose my connection frequently on road trips but I using the booster I kept my connection the entire time and my speed was great increased as well. I am extremely happy with the product and highly recommend it. Thanks!

Date Added: 06/24/2014 by Jack F. (MT. ENTERPRISE, TX)
Every thing is just like they said it would be. It's works wonderfully giving me strong signal out here on my construction site where I have to use my phone as a hot spot. Great!

Date Added: 06/08/2014 by Matthew G. (Crookston, MN)
We had two people in our vehicle with hotspot modems from Millenicom. The one that was put into the Wilson Sleek got better reception in both 3G and 4G areas.

Page 1 of 14 123456789

If you purchased this item, Login to write a review.
Q & A
Got questions about this product? Here you can view questions that other customers have asked (and the answers!). If you have a question that hasn't been answered below, you may submit a new question and 3Gstore will answer it!

Click here to submit a new question

Sort By:

Questions & Answers

Why do I need a magnetic base for the antenna?

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.