The 55-inch LG OLED AI B4 4K Smart TV (2024) presents an exciting blend of cutting-edge display technology, advanced processing power, and a rich suite of smart features. Whether you’re a cinema enthusiast, a gaming aficionado, or simply someone looking to upgrade to a high-end smart TV, the B4 is designed to satisfy diverse viewing needs. This review covers every aspect of the LG OLED AI B4, breaking down its specifications, user experience, and value proposition.
Display Quality: Exceptional OLED Performance
OLED Brilliance and 4K Resolution
The LG OLED AI B4 boasts a 4K OLED panel (3840 x 2160), offering sharp, ultra-high-definition visuals with incredible detail. OLED technology uses self-lit pixels, resulting in true blacks, vibrant colors, and a superior contrast ratio. This feature is especially evident in dark scenes, where OLED’s pixel-level dimming technology prevents any unwanted blooming or backlight bleed.

HDR and Wide Color Gamut
HDR support, including Dolby Vision, HDR10, and HLG, takes image quality to the next level. The TV’s wide color gamut ensures colors are not only accurate but also rich and realistic. Thanks to Dolby Vision, which adjusts brightness and contrast on a scene-by-scene basis, viewers can expect cinematic picture quality that closely mirrors the creator’s intent.
AI-Powered Visual Enhancements
The B4 is equipped with LG’s α8 AI Processor 4K, which enhances image processing with AI upscaling and brightness control. AI Genre Selection identifies the type of content being played—be it a movie, sports, or a game—and optimizes settings accordingly. Dynamic Tone Mapping Pro technology further improves contrast and details in bright and dark areas, making every frame lifelike and visually impressive.
Refresh Rate and Motion Handling
With a 120Hz native refresh rate, the TV supports smooth visuals for fast-paced scenes, whether in sports broadcasts or gaming. The OLED Motion technology helps minimize motion blur, ensuring viewers enjoy fluid and immersive experiences during high-motion content.
The LG OLED AI B4 excels in delivering outstanding picture quality, thanks to OLED’s self-lit pixels, robust HDR support, and smart processing features. For users focused on display performance, this TV is a top contender.
Gaming Performance: Tailored for Gamers
High Frame Rate and Variable Refresh Rate
With support for a 4K 120fps High Frame Rate (HFR) through HDMI, this TV is ideal for next-gen gaming consoles like the PlayStation 5 and Xbox Series X. The inclusion of Variable Refresh Rate (VRR) and compatibility with NVIDIA G-Sync and AMD FreeSync reduces screen tearing and stuttering, providing a fluid and responsive gaming experience.

ALLM, HGIG, and Game Optimizer
The Auto Low Latency Mode (ALLM) automatically minimizes lag when gaming, providing seamless transitions between gameplay and other TV functions. The HGIG (HDR Gaming Interest Group) mode enhances HDR gaming visuals by standardizing brightness, contrast, and color levels, giving players an immersive experience in high dynamic range gaming.
The Game Optimizer and Game Dashboard features allow users to adjust gaming settings quickly, from VRR to black stabilizer and input lag reduction, directly from an on-screen menu without interrupting the gameplay. These features cater to serious gamers who want complete control over their gaming environment.
The LG OLED AI B4 is equipped with advanced gaming features that make it a top pick for gamers seeking ultra-smooth, high-resolution gameplay.
Smart TV Features: Powered by webOS 24
Seamless Interface and Smart Features
The LG OLED AI B4 runs on webOS 24, a user-friendly operating system with a sleek and intuitive interface. It comes loaded with popular streaming apps like Netflix, Amazon Prime Video, Disney+, and more, enabling users to access their favorite content with ease. The interface supports multiple profiles and customized recommendations based on viewing habits.
ThinQ AI and Voice Control
LG ThinQ AI is at the core of the smart experience, enabling the TV to integrate seamlessly with LG’s broader ecosystem and smart home devices. The B4 supports voice assistants such as Amazon Alexa (built-in) and can work with Apple AirPlay2. Users can also control the TV via the LG ThinQ app on their smartphones.
Multi View and Family Settings
Multi View allows users to split the screen, which is useful for keeping up with multiple sources or activities simultaneously. This feature, combined with Family Settings, ensures the TV remains family-friendly, with customizable settings for individual users.
With its powerful smart features, the LG OLED AI B4 goes beyond traditional viewing, offering a tailored and interactive experience for every member of the household.
Audio Quality: Immersive Sound Experience
Dolby Atmos and AI Sound Pro
The LG OLED AI B4 delivers an immersive audio experience with Dolby Atmos support, creating a 3D soundscape that pairs well with its high-quality visuals. This feature is especially impactful for movies and TV shows, where sound directionality adds to the overall cinematic experience.
α8 AI Sound Pro and Clear Voice Pro
LG’s α8 AI Sound Pro processor offers virtual 9.1.2-channel up-mixing, enhancing the soundstage by making audio feel more layered and immersive. Clear Voice Pro automatically detects dialogue-heavy scenes and clarifies voice output, ensuring that users never miss any critical lines due to background noise or low-quality audio sources.
Bluetooth Surround and LG Sound Sync
The TV is Bluetooth Surround Ready, allowing it to connect with additional Bluetooth speakers for a more robust sound setup. LG Sound Sync also enables compatibility with LG soundbars, providing a simplified setup that complements the TV’s built-in speakers.
The audio features on the LG OLED AI B4 support an immersive viewing experience, although audiophiles may still consider a dedicated sound system to maximize sound quality.
Connectivity and Port Selection: Extensive Options
HDMI 2.1 and eARC
The LG OLED AI B4 includes four HDMI inputs, all supporting 4K 120Hz, VRR, and ALLM, which is a boon for users with multiple gaming consoles or devices. HDMI 3 also features an enhanced Audio Return Channel (eARC), allowing high-resolution audio to be sent from the TV to an external sound system.
Wireless and Wired Connectivity
The TV supports Wi-Fi 5 and Bluetooth 5.1, covering essential wireless connectivity needs. Additionally, it includes Ethernet, USB, and RF inputs, ensuring it’s well-equipped for various use cases, from streaming to connecting external drives.
Compatibility with Accessories
The LG OLED AI B4 is USB Camera compatible, useful for video calls or other camera-based applications. Simplink (HDMI CEC) allows for control of compatible HDMI devices with a single remote, reducing clutter and simplifying device management.
The LG OLED AI B4 is equipped with robust connectivity options, making it suitable for a wide range of users with various external device requirements.
Accessibility and Usability: A Thoughtful Approach
Accessibility Features
The B4 includes high-contrast mode, grayscale, and invert colors to accommodate users with visual impairments. These features make it accessible to a broader audience, ensuring inclusivity without compromising on functionality.
Magic Remote Control
The included Magic Remote MR24 offers point-and-click navigation, voice control, and hotkeys for quick access to popular apps. Its ergonomic design and responsive performance enhance user experience, simplifying navigation and access to settings.

With a focus on accessibility and ease of use, the LG OLED AI B4 provides an inclusive experience that meets the needs of a diverse audience.
Energy Efficiency and Sustainability
Energy Consumption
The LG OLED AI B4 has a standby power consumption of under 0.5W, reflecting its efficiency when idle. This is a notable feature for eco-conscious consumers who prioritize energy-saving devices.
Long-Term Software Support
The security update support until 2028 demonstrates LG’s commitment to providing a secure and up-to-date experience over the TV’s lifespan. This ensures that users can continue to enjoy a secure smart TV experience even as technology evolves.
The TV’s energy efficiency and long-term software support make it an attractive option for environmentally aware consumers who value sustainability.
Design and Build: A Sleek Addition to Any Room
Aesthetics and Build Quality
The LG OLED AI B4 features a sleek and minimalist design, typical of LG’s OLED lineup. The screen is ultra-thin (45.9 mm without the stand), and the overall build quality feels premium. With narrow bezels, the display appears expansive, making the TV a statement piece in any room.
Stand and Mounting Options
The TV includes a compact stand measuring 1057 x 235 mm. The stand is stable and complements the TV’s slim profile without taking up excessive space. VESA mounting (300 x 200) is also supported, allowing users to wall-mount the TV for a cleaner setup.
With a focus on elegance and minimalism, the LG OLED AI B4 is a stylish addition to any living room, suitable for both stand and wall mounting.
Overall Performance and Value for Money
The 55-inch LG OLED AI B4 4K Smart TV (2024) combines cutting-edge OLED technology with advanced AI processing, a comprehensive set of smart features, and gaming enhancements that are hard to beat in this category. Its picture quality, gaming performance, and smart functionality provide a compelling package, especially for users seeking a high-end viewing experience.
In terms of price-to-performance, the LG OLED AI B4 offers significant value, delivering features typically found on more expensive models. However, while the built-in audio is solid, serious audiophiles may still find value in pairing the TV with a high-quality soundbar or surround sound system to truly unlock the potential of Dolby Atmos. Price: £899.00

Pros and Cons Summary
Pros:
- Exceptional OLED picture quality with perfect blacks and vibrant colors
- Comprehensive HDR support (Dolby Vision, HDR10, HLG)
- Excellent gaming features (4K 120fps, VRR, ALLM, G-Sync/FreeSync compatibility)
- User-friendly webOS 24 with ThinQ AI and multi-device compatibility
- Enhanced sound quality with Dolby Atmos and AI Sound Pro
- Versatile connectivity options (HDMI 2.1, eARC, Bluetooth 5.1)
- Long-term software support and energy-efficient design
Cons:
- Audio output may not satisfy audiophiles without an external sound system
- Limited to Wi-Fi 5 (newer TVs may offer Wi-Fi 6 or 6E)
Final Verdict
The LG OLED AI B4 4K Smart TV (2024) is a versatile and powerful TV that excels in nearly every category, from picture quality to gaming performance. It’s a standout choice for viewers who prioritize high-quality visuals, immersive audio, and cutting-edge smart TV features. At its price point, the LG OLED AI B4 offers exceptional value, making it a highly recommended choice for a wide range of users.