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zBoost Trio Soho AT&T Cell Phone Signal Booster | ZB575-A Complete Kit
zBoost Trio SOHO AT&T Cell Phone Signal Booster
Item: #ZB575-A4GUp to 2,500 sq. ft70 dB Gain
(You save $80.00 )

zBoost Trio SOHO AT&T Cell Phone Signal Booster - ZB575-A

(You save $80.00 )
FREE Standard Shipping. Expedited Shipping available.
Lifetime Technical Support.
90 Day Money Back Guarantee.
2 (Two) Year Warranty.
  • Boosts Talk, Text and 4G LTE data
  • Compatible with 3G devices and AT&T 4G LTE
  • Ideal for homes and offices that have reliable outside signal
  • Coverage area up to 2,500 sq. ft.
  • Up to +70 dB Gain

Product Details

zBoost Trio SOHO AT&T Cell Phone Signal Booster

zBoost logo

Say goodbye to dropped calls, poor call quality, and slow internet.

  • High performance tri-band signal booster – coverage up to 2,500 sq ft
  • Ideal for homes and offices that have reliable outside signal
  • Automatically operates at maximum gain - no manual adjustments needed
  • Reduces dropped and missed calls and provides faster 4G data performance for multiple simultaneous users
  • Compatible with mobile phones and devices operating on AT&T 4G LTE, CEL (800 MHz) and PCS (1900 MHz)

zBoost TRIO SOHO cell phone signal booster boosts indoor signal for voice and AT&T 4G data signals up to 2,500 sq. ft. The innovative zBoost ZB575-A boosts AT&T 4G LTE, CEL (800 MHz) and PCS (1900 MHz). The zBoost TRIO SOHO captures the reliable cellular signal you have outdoors and rebroadcasts it indoors so you can enjoy clearer, faster and more reliable service without interruption. No more dropped calls, lost connections, and slow internet. Also perfect for SOHO (single office, home office), cabin, warehouse, station and other business.

WARNING: This product can expose you to chemicals including Nickel (Metallic) which is known to the State of California to cause cancer and Bisphenol A (BPA) which is known to the State of California to cause birth defects or other reproductive harm. For more information go to

PRODUCT Top 10 Benefits

how it works image
  • 1 Eliminates Dropped Calls
  • 2 Crystal Clear Voice
  • 3 Quickly Delivered Text
  • 4 Faster Uploads & Downloads
  • 5 Reliable Connection
  • 6 Improved Reception
  • 7 Wider Coverage
  • 8 Reduced Dead Zones
  • 9 More Bars
  • 10 Longer Battery Life

Who is this for?

You need reliable signal for talk & text and high-speed 4G internet for the entire house. You can’t deal with dropped calls, fish tank voices, stuck text messages and slow internet. Get the signal you deserve for dependable connections and clear calls with a high-powered amplifier exclusively made for AT&T.

Which Carriers Does it Work for?

The zBoost ZB575-A Trio SOHO signal booster amplifies talk & text and 3G for all major carrier networks except WiMax and iDen.

  • All US carriers (3G): AT&T, Verizon, Sprint, T-Mobile, US Cellular, Leap Wireless, C Spire, MetroPCS, etc.
  • 4G LTE: AT&T

How Does it Work?

It works by pulling in the existing weak signal with the outside antenna, amplifying it multiple times with zBoost’s award-winning amplifier. The enhanced signal bypasses all exterior and interior obstructions and interference directly to your desk.

From the cell tower straight to your phone for clearer calls, faster internet, wider coverage, and stable connections. Say goodbye to interruptions.

What’s Included In the Complete Kit?

zBoost Trio SOHO Cell Phone Signal Booster Kit (Item # ZB575-A) Includes:

1 amplifier
AT&T Cell Phone Amplifier with Antenna
2 antenna
External Antenna
3 power supply
Power Supply
4 cable
50' RG6 (75ohm) Coax Cables

Coverage Area & Product Specifications

The zBoost Trio SOHO cellular signal booster is a simple, effective solution to maintain continuous communication for all cellular-enabled devices – smartphones, tablets, etc - in your home or workspace.

1850-1990 MHz
824-894 MHz
704-746 MHz
MAX GAIN 70 decibels (dB)
COVERAGE Up to 2,500 sq ft
POWER 110-240 V AC, 50-60 Hz, 5.0VDC
CONNECTORS F-Female (outside antenna)
DIMENSIONS 5 x 7 x 1.25 in
UPC 854584003786
Specifications Sheet(PDF)

Installation Instructions

The product is easy to install. Everything is included in the kit.

If you have questions or require assistance, please call our customer and tech support at 1-800-568-2723 or email at We will be happy to assist you in every step of the way.

Quick Install Guide (PDF)
guideInstallation Manual (PDF)

Wilson Amplifiers provides a free service to help you along the way. Please check out our blog for more information.

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.

E911 location information may not be provided or may be inaccurate for calls served by using this device. Please note, the four largest carriers, namely, AT&T, T-Mobile, Verizon and Sprint, and more than 90 regional carriers have given a blanket consent to all boosters meeting the new certification standards


We're in the business of providing reliable connection– not selling boxes, not selling snake oil, and definitely not losing your trust.

First 100% Guarantee: We provide a 90 Day Money Back Guarantee on all new weBoost products and a 30 Day Money Back Guarantee on all new Wilson Pro products. All refurbished units come with a 30 day money back guarantee. No other company does that. Take your time and make sure you’re happy with the solution. We’re here to support you if you have any questions. That's the Wilson Amplifiers difference.

Second 100% Guarantee: Anytime during your 2-year manufacturer's warranty (1 year for refurbished/renewed), should your unit not perform to its usual standards, contact us, and we'll take care of it. We're not here for the one-time sale. We're here for the lifetime supporter. We want to be loved.

Third 100% Guarantee: Lifetime technical support. You’re our guest. Whether it’s finding cell tower locations, learning about new cellular technology, or asking about installations, we’re here to help. We’re also fond of football debates and talking about all things food.

Oh, and we also provide FREE shipping for everything 😉