LG OLED AI B4 55 (139 cm) 4K Smart TV 2024
The images used in the product overview below are for representative purposes. Refer to the image gallery at the top of the page for an accurate representation.
webOS
LG webOS ranked the best smart TV operating system
webOS 24 UX
iF Design Award ‘Winner’
A video shows the 10 Years World's No.1 OLED TV emblem appear gradually against a black backdrop with purple and blue fireworks.
*Screen images simulated.
Get 3 free months of Apple Music
*Spatial audio with Dolby Atmos is supported on select LG devices. Offer expires 4/30/2025. Offer available in the Apple Music app on select 2018-2024
LG 4K, 8K Smart TV models, StanbyME and StanbyME Go TV models, 2022-2024 LG MyView™ Smart Monitor models. New and qualified returning subscribers only.
Apple Music automatically renews at your region’s price per month after promotion until cancelled. Compatible products and services and minimum age required. Terms apply.
WEB OS
A gold emblem of LG is the world's number 1 OLED TV brand for 11 Years against a black backdrop.
*Omdia. 11 years of NO 1 regarding most sold units 2013-2023. This result is not an endorsement of LGE or its products. Visit https://www.omdia.com/ for more details.
LG's alpha 8 AI Processor on top of a motherboard, emitting orange bolts of light. OLED TV with the OLED Care menu is selected in the support menu that is up on the screen. The slimline design in a side of view as it is placed flat against the wall in a modern living space.
The alpha 8 AI Processor chip redefines OLED with refinements that add transformative yet lifelike detail.
A video shows the 10 Years World's No.1 OLED TV emblem appear gradually against a black backdrop with purple and blue fireworks.
*Comparison is based on a conventional TV with alpha 5 AI Processor.
**Screen images simulated.
LG OLED in a modern living space displaying a musical performance on screen. Blue circular waves depicting personalization surround the TV and space. A woman with piercing blue eyes and a burnt orange top in a dark space. Red lines depicting AI refinements cover part of her face, which is bright and detailed, while the rest of the image looks dull. LG OLED TV as sound bubbles and waves emit from the screen and fill the space.
A video shows the 10 Years World's No.1 OLED TV emblem appear gradually against a black backdrop with purple and blue fireworks.
Select your favorite images, and AI Picture Wizard creates a picture tailored exactly to your unique taste from 85 million possibilities, then saves it to your profile.
night
day
Come day or night, Brightness Control detects the light in your space and balances the picture accordingly for crisp and clear visuals.
*Screen images simulated.
*Screen images simulated.
**Must be activated through the sound mode menu.
***Sound may vary according to the listening environment.
Rather than relying on an additional backlight, LG OLED's self lit pixels illuminate independently. The result is true-to-life color, perfect blacks that never gray, and a picture beyond compare. With Eye Comfort Technology's low-blue light, flicker-free, and discomfort glare-free certifications, watch for longer without eye strain.
*Screen images simulated.
A video shows an LG OLED TV in a modern city apartment. A grid overlay appears over the image like a scan of the space, and then blue soundwaves project from the screen, perfectly filling the room with sound.
Scenes burst boldly into life where the darkest shadows and brightest lights intertwine.
The Milky Way fills the night sky above a canyon scene. Above the image, "gray is not black" is written in white block capitals against a black backdrop. The screen is split into two sides and marked "Others" and "LG OLED." The other side is noticeably dimmer and lower in contrast, whereas the LG OLED side is bright with high contrast. The LG OLED side also features Discomfort Glare Free and Perfect Black technology certifications.
*Screen Images simulated.
**‘Others’ refer to it as a non-glossy OLED.
***LG OLED TV panels are certified Discomfort Glare Free by UL based on the Unified Glare Rating (UGR) evaluation method.
****Verification issued when UGR is less than 22 when watching TV between 70 lux and 300 lux.
*****LG OLED display only applied to C4, B4, and CS4 was verified by UL for perfect black measured to IDMS 11.5 Ring-light Reflection standards.
A bustling city scene in the early evening with bold colors and contrast.
100% color volume boosts rich hues, while 100% color fidelity preserves shades without distortion.
*LG OLED Panel is certified by Intertek for 100% Color Fidelity measured to CIE DE2000 with 125 color patterns.
**Display Color Gamut Volume (CGV) is equivalent or exceeds the CGV of the DCI-P3 color space as verified independently by Intertek.
OLED TV is standing on the right side of the image. The Support menu is up on the screen, and the OLED Care menu is selected.
The LG ultra slim designed OLED B4 TV on the wall showing a colorful photo of a sunset over the ocean.
LG OLED B4's stand on top of a marble surface. An image of a pale blue wave is on the screen. An image of LG OLED B4 on a stand in a minimalist space
*Bezel size differs by series and size.
Discover a size for every space and taste with a lineup ranging from 55 (139.7 cm)to 77 (195.58 cm).
Comparing LG OLED TV, OLED B4's varying sizes, showing OLED B4 55 (139.7 cm), OLED B4 65 (165.1 cm), OLED B4 77 (195.58 cm).
*Supported menus and apps may vary by country and be different upon release.
**Keyword recommendations vary according to the app and time of day and are only provided in countries that support NLP in their native language.
***Screen images simulated.
LG TV mounted on the wall shows the screen of WebOS supporting Home Office, LG Channels, Game, and Music.
Five rectangles in different colors are staggered upwards, each labeled with a year from "webOS 24" to "webOS 28". Upward-pointing arrows are between the rectangles, labeled from "Upgrade 1" to "Upgrade 4".
*The webOS Re:New Program supports a total of four upgrades over five years, the threshold is the pre-installed version of webOS, and upgrade schedule varies from month-end to year-start.
**Updates and the schedule to some features, applications, and services may vary by model and region.
***Upgrades available for 2023 include UHD and above models.
An LG TV displays an image of a woman and a dog in a vast field. At the bottom of the screen, the text "Recommend new keywords every time you press the mic button on the remote control" is displayed next to a pink-purple circle graphic. Pink bars show the following keywords: Movies with dogs, Dog, Autumn, Relaxation, Friendship. In front of the LG TV, the LG Magic Remote is pointed toward the TV with neon purple concentric circles around the mic button. Next to the remote, a graphic of a finger pressing a button and the text "Short press" is displayed.
*Screen images simulated.
**Reduced or limited content may be shown depending on region and network connectivity.
***An unlimited number of profiles can be created however the home screen will only display up to 10 profiles.
****Supported features, menus, and apps above may vary by country and upon release.
*****For you keyword' in AI Concierge can only be provided in countries that support NLP in their native language.
******Keyword recommendations vary according to the app and time of day.
*******Always Ready feature is available with LG OLED M4, G4, C4, CS4, B4, QNED99, QNED90, QNED89, QNED85, and 86NANO80
********Google Calendar service will be supported later this year.
An LG Magic Remote with the middle circular button, as neon purple light emanates around the button to highlight them. A soft purple glow surrounds the remote on a black background.
*The functions and features in Magic Remote may vary by region and language.
*Screen images simulated.
**Picture and sound settings on both screens are the same.
***Support for 2 screen / 4 screen mode varies by model and country. (3&4 screen mode is available only with M4 and G4 series.)
*Screen images simulated.
**Apple, the Apple logo, Apple TV, AirPlay and HomeKit are trademarks of Apple Inc., registered in the U.S. and other countries.
***Support for AirPlay 2, HomeKit, Chromecast Built-in, and may vary by region, and language.
****LG supports 'Matter' Wi-Fi devices. 'Matter' supported services and features may vary depending on the connected devices. Initial connection for ThinQ and Matter should be via ThinQ mobile app.
*****Use of the hands-free voice function without a remote control is only possible with the alpha 9 AI Processor and may vary depending on products and regions.
******Chromecast built-in service may not yet be available at the time of purchase of OLED CS4, but you will be able to enjoy the service after installing webOS software updates.
*Screen images simulated.
**Available content and apps may vary by country, product, and region.
***Separate subscription and its related entities are required for Netflix, Disney+, Amazon Prime, and Apple TV+.
****Apple, the Apple logo, and Apple TV are trademarks of Apple Inc, registered in the U.S. and other countries.
*****Amazon, Prime Video and all related logos are trademarks of Amazon.com, Inc. or its affiliates.
Dolby Vision & FILMMAKER Mode
Transform movie night. Dolby Vision's ultra-vivid picture comes together with the support of FILMMAKER MODE™ to preserve the director's intention, optimizing the picture quality while ensuring no distortion or over-processing.
A director in front of a control panel editing the movie "Killers of the Flower Moon" on an LG OLED TV. A quote by Martin Scorsese: "For home viewing, every film should be seen in filmmaker mode," overlays the image with the "Killers of the Flower Moon" logo, Apple TV+ logo, and a "coming soon" logo. Dolby Vision logo FILMMAKER MODE™ logo
*Screen images simulated.
**FILMMAKER MODE is a trademark of UHD Alliance, Inc.of UHD Alliance, Inc.
Dolby Atmos
Hear action surround you with Dolby Atmos's unparalleled clarity, intricate detail, and spatial depth.
A cozy, dimly lit living space, LG OLED TV displaying a couple is using an umbrella, and bright circle graphics surround the room. Dolby Atoms logo in the bottom left corner.
*Screen images simulated.
Palme d'Or winner Sean Baker on his influences and inspirations.
In conversation with Netflix's Beef director Lee Sung Jin.
Where Ryusuke Hamaguchi crafts his award-winning movies.
Gear up for victory with AMD FreeSync Premium, G-SYNC compatibility, 120Hz Mode, and VRR.
*Game Dashboard is activated only when both "Game Optimizer" and "Game Dashboard" is on.
**Screen images simulated.
Don't pause to use Game Optimizer and Game Dashboard.
A FPS gaming scene with the Game Dashboard appearing over the screen during gameplay. A dark, wintery scene with the Game Optimizer menu appearing over the game.
*Game Dashboard is activated only when both "Game Optimizer" and "Game Dashboard" is on.
**Screen images simulated.
Thousands of gaming universes right at your fingertips. Explore an epic library of cloud gaming titles and stream them immediately without ever wasting play time on downloads or updates.
A Boosteroid home screen image showing "Trine 4: The Nightmare Price". A GeForce NOW home screen showing five different game thumbnails in right.
*Supported partnerships may differ by country.
**GeForce NOW subscription may be required.
***Boosteroid subscription may be required.
Choose what's right for the planet with light, bio packaging and global sustainability credentials.
LG OLED packaging against a beige background with illustrated trees.
*All 2024 LG OLED models feature eco-friendly packing.
**All G4, C4, and B4 models are certified “Environmentally Evaluated".
Display Type
4K OLED
Refresh Rate
120Hz Native
Wide Color Gamut
OLED Color
Picture Processor
α8 AI Processor 4K
HDR (High Dynamic Range)
Dolby Vision / HDR10 / HLG
G-Sync Compatible (Nvidia)
Yes
FreeSync Compatible (AMD)
Yes
Audio Output
20W
Speaker System
2.0 Channel
Dolby Atmos
Yes
TV Dimensions without Stand (WxHxD, mm)
1228 x 708 x 45.9
TV Weight without Stand (kg)
14.3
Display Type
4K OLED
Display Resolution
4K Ultra HD (3,840 x 2,160)
Refresh Rate
120Hz Native
Wide Color Gamut
OLED Color
Picture Processor
α8 AI Processor 4K
AI Upscaling
α8 AI Super Upscaling 4K
Dynamic Tone Mapping
Yes (Dynamic Tone Mapping Pro)
AI Genre Selection
Yes (SDR/HDR)
AI Brightness Control
Yes
HDR (High Dynamic Range)
Dolby Vision / HDR10 / HLG
FILMMAKER MODE ™
Yes
HFR (High Frame Rate)
4K 120 fps (HDMI)
Dimming Technology
Pixel Dimming
Motion
OLED Motion
Picture Mode
10 modes (Personalized Picture Wizard, Vivid, Standard, Eco, Cinema, Sports, Game, Filmmaker, (ISF)Expert(Bright Room), (ISF)Expert(Dark Room))
G-Sync Compatible (Nvidia)
Yes
FreeSync Compatible (AMD)
Yes
HGIG Mode
Yes
Game Optimizer
Yes (Game Dashboard)
ALLM (Auto Low Latency Mode)
Yes
VRR (Variable Refresh Rate)
Yes
Works with Apple Airplay2
Yes
Operating System (OS)
webOS 24
Family Settings
Yes
ThinQ
Yes
USB Camera Compatible
Yes
Always Ready
Yes
Full Web Browser
Yes
Intelligent Voice Recognition
Yes
Magic Remote Control
Built-In
Multi View
Yes
Room to Room Share
Yes (Receiver)
Smartphone Remote App
Yes (LG ThinQ)
High Contrast
Yes
Gray Scale
Yes
Invert Colors
Yes
TV Dimensions without Stand (WxHxD, mm)
1228 x 708 x 45.9
TV Dimensions with Stand (WxHxD, mm)
1228 x 772 x 235
Packaging Dimensions (WxHxD, mm)
1360 x 810 x 172
TV Stand (WxD, mm)
1057 x 235
TV Weight without Stand (kg)
14.3
TV Weight with Stand (kg)
14.5
Packaging Weight (kg)
19.5
VESA Mounting (WxH, mm)
300 x 200
Dolby Atmos
Yes
AI Sound
α8 AI Sound Pro (Virtual 9.1.2 Up-mix)
Clear Voice Pro
Yes (Auto Volume Leveling)
WiSA Ready
Yes (Up to 2.1 Channel)
LG Sound Sync
Yes
Sound Mode Share
Yes
Simultaneous Audio Output
Yes
Bluetooth Surround Ready
Yes (2 Way Playback)
Audio Output
20W
AI Acoustic Tuning
Yes
Audio Codec
AC4, AC3(Dolby Digital), EAC3, HE-AAC, AAC, MP2, MP3, PCM, WMA, apt-X (Refer to manual)
Speaker Direction
Down Firing
Speaker System
2.0 Channel
HDMI Audio Return Channel
eARC (HDMI 3)
Bluetooth Support
Yes (v 5.1)
Ethernet Input
1ea
Simplink (HDMI CEC)
Yes
SPDIF (Optical Digital Audio Out)
1ea
HDMI Input
4ea (supports 4K 120Hz, eARC, VRR, ALLM, QMS (4 port))
RF Input (Antenna/Cable)
2ea
USB Input
2ea (v 2.0)
Wi-Fi
Yes (Wi-Fi 5)
Power Supply (Voltage, Hz)
AC 100~240V 50-60Hz
Standby Power Consumption
Under 0.5W
Country of Origin
India
Imported By
LG Electronics India (P) Ltd
Net Quantity
1N
Manufactured By
LG Electronics India Pvt Ltd. Plot No. A5, MIDC Rajangaon, Tal. Shirur, Pune - 412220 (India)
Remote
Magic Remote MR24
Power Cable
Yes (Attached)
Remote Control Batteries
Yes (AA x 2EA)
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