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Overview

Enjoy watching incredible pictures in the LG 55-inch LCD smart TV. Featuring stunning 4K ultra HD resolution and HDR technology, it delivers lifelike, vibrant picture quality. Powerful downward-firing speakers provide clear, immersive sound to complement your visuals. Plus, Wi-Fi 5 and Bluetooth connectivity make streaming and device pairing seamless and convenient.

LG 55" UA7900 Series AI 4K UHD HDR LED Smart TV (55UA7900YUA) - 2025

Model: 55UA7900YUA
Web Code: 19330419
Sold and shipped by Best Buy

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Screen Size: 55 in

55 in $549.99
65 in $749.99
75 in $999.99

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Return Policy

30 days to return or exchange

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Manufacturer's Warranty

Check with the manufacturer for details or add Best Buy Protection for extra coverage.

For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

What's included:

  • Remote Control
  • Battery
  • Power Cable
  • Quick Start Guide

Stunning clarity and seamless entertainment

  • 55-inch screen with crystal-clear 4K ultra HD resolution offers stunning detail for immersive viewing
  • Smart TV gives you easy access to your favourite streaming apps, content, and services, without any extra devices

Amazing picture and sound

  • Direct Lit backlighting delivers enhanced brightness and consistent picture quality across the entire screen
  • High Dynamic Range (HDR) enhances contrast and colour accuracy for lifelike, vibrant images
  • 60Hz refresh rate ensures smooth and clear motion for everyday viewing
  • Alpha 7 AI Processor Gen8 optimizes picture and sound quality in real time for a smooth, immersive viewing experience
  • Included downward-firing speakers deliver clear, immersive sound by projecting audio directly into the room

Smart features and simple streaming

  • webOS operating system provides an intuitive and easy-to-navigate smart TV platform
  • Over 100 free LG channels offer a wide range of entertainment, with personalized recommendations and fast, easy browsing (requires internet connection; number of LG Channels subject to change)
  • Preloaded apps like Netflix, Disney+, YouTube, Prime Video, and Apple TV+ let you start streaming your favourite entertainment right away without any setup (subscription may be required)

Advanced connectivity and voice control

  • Built-in Amazon Alexa and compatibility with Google Assistant and Apple HomeKit let you control your TV hands-free and connect easily to your smart home devices
  • Wi-Fi 5 and Bluetooth connectivity allow seamless streaming, easy device pairing, and wireless control
  • Compatibility with AirPlay 2 lets you stream content smoothly and control playback across multiple Apple devices
  • Chromecast built-in lets you easily cast your favourite apps, videos, and music from your phone or tablet directly to the TV
  • Three HDMI 2 inputs, one optical digital audio output, and one USB media ports offer versatile connectivity options

Convenient control and flexible installation options

  • Magic Remote lets you effortlessly navigate your TV using motion control, voice commands, and quick access buttons
  • Optional 300mm x 200mm wall mount specification allows for easy wall mounting to save space and customize your viewing setup
Product Condition
Brand New
ENERGY STAR certified
Yes
Model Year
2025
Demo Model
No

Video

Screen Size
55 in
Resolution
4K Ultra HD
TV Display Technology
LED
Backlight Technology
Direct Lit
High Dynamic Range (HDR)
Yes
Dolby Vision
No
IMAX Enhanced
No
Refresh Rate
60 Hz
Panel Shape
Flat

Audio

Speaker Configuration
Downward Firing
Speaker Output Power
20 W

Inputs/Outputs

HDMI Inputs
3
Component Video Inputs
No
Coaxial Cable Inputs
No
Optical Digital Audio Outputs
1
Stereo Audio Outputs
No
Headphone Jack
No
USB Media Port
1
Internet Connectivity
Wi-Fi
Bluetooth
Yes
Works with Apple AirPlay
AirPlay 2
Chromecast built-in
Yes
Wireless Standard Generation
Wi-Fi 5
DLNA Certified
Yes
TV Operating System
webOS
Preloaded Apps
Netflix; Disney+; YouTube; Prime Video; Apple TV+; LG Channels
Motion Control
Yes
Voice Control
Yes
Voice Assistant Built-In
Amazon Alexa
Works with Google Assistant
Yes
Works with Amazon Alexa
Yes
Works with Apple HomeKit
Yes
Energy Saving Mode
Yes

Physical Features

Wall Mount
Optional
Wall Mount Specification
300 mm x 200 mm

Dimensions With Stand

Width with Stand
123.6 cm
Height with Stand
78 cm
Depth with Stand
23 cm
Width with Stand (Inches)
48.66 in
Height with Stand (Inches)
30.71 in
Depth with Stand (Inches)
9.06 in
Weight with Stand
11.6 kg

Dimensions Without Stand

Width without Stand
123.6 cm
Height without Stand
78 cm
Depth without Stand
2.3 cm
Width without Stand (Inches)
48.7 in
Height without Stand (Inches)
30.7 in
Depth without Stand (Inches)
9.1 in
Weight without Stand
11.5 kg

For Quebec residents – Disclosure under the Consumer Protection Act

In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Information about the manufacturer’s availability guarantee can be found .