LG's flagship mid-range OLED with α9 AI Processor and perfect blacks for gaming and movies.
Full review
Panel Performance and Brightness
The LG C4 OLED utilizes the latest OLED EX panel technology, which reviewers consistently note delivers superior brightness compared to the previous C3 generation. RTINGS.com measured significant improvements in peak brightness, particularly in smaller window sizes that are critical for HDR highlights. In their testing, the 55-inch model achieved a peak brightness of 1,000 nits in a 10% window, a substantial jump that makes HDR content like explosions and sunlight appear more impactful and realistic. This increase in luminance helps the C4 compete more effectively with Mini-LED alternatives in well-lit rooms, although it still falls short of the absolute peak brightness found in LG’s flagship G-series or Samsung’s QD-OLED panels. The improved brightness is not just a spec sheet number; it translates to better visibility of details in bright scenes without the image appearing washed out.
Color accuracy remains a strong suit for the C4, with RTINGS reporting a Delta-E score of 0.8 in the out-of-the-box Movie mode, indicating near-perfect color reproduction. TechRadar praised the TV’s ability to handle a wide variety of content, noting that the Alpha 9 Gen 7 AI processor does an excellent job of upscaling lower-resolution sources like cable TV or streaming services that do not offer native 4K. The upscaling algorithms reduce noise and sharpen details without introducing the artificial halos or blockiness seen in cheaper LCD sets. What Hi-Fi? also highlighted the dynamic yet accurate picture, stating that the C4 maintains the rich, engaging visuals that have made the C-series a staple for film enthusiasts. The color volume is robust, ensuring that saturated colors remain vibrant even at higher brightness levels, a common weakness in older OLED generations.
Gaming Features and Input Lag
For gamers, the LG C4 is arguably the most compelling option in its class, largely due to its comprehensive feature set and low input lag. RTINGS.com measured an input lag of just 8.3 milliseconds at 120Hz in Game Mode, which is exceptionally low and ensures that controller inputs feel instantaneous. The TV supports HDMI 2.1 features including 4K at 120Hz, Variable Refresh Rate (VRR), and Auto Low Latency Mode (ALLM), making it a plug-and-play solution for PS5 and Xbox Series X owners. TechRadar emphasized that the C4’s gaming performance is unmatched in the mid-range OLED category, offering a smooth and responsive experience that rivals high-end monitors. The inclusion of NVIDIA G-Sync and AMD FreeSync compatibility further broadens its appeal to PC gamers who demand tear-free gameplay.
Beyond raw latency, the C4 offers a suite of gaming-specific tools that enhance the experience. The Game Optimizer menu allows users to fine-tune settings like crosshair overlays, timer displays, and color filters, which can be particularly useful in competitive shooters. RTINGS noted that the TV’s motion handling is solid, with a motion clarity score that minimizes blur during fast-paced action sequences. However, some Reddit users in r/OLED mentioned that while the input lag is low, the TV’s response time can occasionally lead to minor ghosting in extremely dark scenes with high-contrast motion, a known limitation of OLED technology. Despite this, the consensus among professional reviewers and community discussions is that the C4 provides the best all-around gaming experience for console users, balancing picture quality with performance.
Audio Quality and Sound Limitations
One of the most consistent criticisms across all review sources is the LG C4’s built-in audio performance. What Hi-Fi? explicitly stated that the sound lacks weight and impact, describing it as lackluster for a TV of this caliber. The C4 features a 2.2-channel speaker system with a total output of 40 watts, which is adequate for dialogue and casual viewing but struggles with dynamic range and bass response. RTINGS.com’s audio testing confirmed these observations, noting that the TV’s sound profile is flat and lacks the depth required for immersive movie watching or gaming. The bass is particularly weak, and high frequencies can become harsh at higher volumes, leading to listener fatigue over extended periods.
Given these limitations, reviewers universally recommend pairing the C4 with an external soundbar or home theater system. TechRadar pointed out that while the TV’s picture quality is exceptional, the audio experience is incomplete without additional hardware. The C4 does support eARC (Enhanced Audio Return Channel), which allows for high-quality audio transmission to compatible soundbars, and it includes LG’s AI Sound Pro feature that attempts to optimize audio based on the content type. However, this software-based enhancement cannot overcome the physical limitations of the small drivers. Reddit users echoed this sentiment, with many noting that the TV’s audio is the weakest link in the package and that investing in a decent soundbar is almost mandatory for a satisfying viewing experience.
Smart Platform and User Interface
The LG C4 runs on webOS 24, which offers a wide range of app compatibility and a generally smooth user experience. RTINGS.com praised the platform’s responsiveness and the ease of navigating through menus, noting that the interface is intuitive for most users. The TV supports all major streaming services, including Netflix, Disney+, Amazon Prime Video, and Apple TV+, ensuring that users have access to a vast library of content. The Magic Remote, which has been a staple of LG’s smart TVs, continues to be a highlight, allowing for precise cursor control and voice commands via Google Assistant and Alexa. This makes finding content and controlling the TV more efficient than traditional directional remotes.
However, the webOS platform is not without its flaws. What Hi-Fi? criticized the ad-heavy user interface, noting that promotional content and sponsored apps can clutter the home screen and disrupt the viewing experience. Some users on Reddit have reported occasional software bugs and slow loading times for certain apps, which can be frustrating. Additionally, the non-backlit remote has been a point of contention, as it can be difficult to use in dark rooms. While the remote’s design is sleek and modern, the lack of backlighting is a practical oversight that affects usability. Despite these issues, the overall smart platform performance is considered competent, with the wide app selection and smooth navigation outweighing the minor annoyances for most users.
Design and Build Quality
The LG C4 maintains the sleek and minimalist design language that has become synonymous with the C-series. It features a thin profile with a nearly bezel-less display, which helps it blend seamlessly into modern living room decor. The stand is sturdy and unobtrusive, allowing the TV to sit securely on most entertainment centers without taking up excessive space. RTINGS.com noted that the build quality is excellent, with no creaking or flexing in the chassis, and the materials feel premium to the touch. The TV’s design is not just aesthetic; it also contributes to its versatility, as it is VESA mount-compatible and can be easily wall-mounted for a clean, floating look.
One notable aspect of the C4’s design is its availability in various sizes, including the compact 42-inch and 48-inch models. What Hi-Fi? highlighted that the 42-inch version is particularly well-suited for smaller spaces or secondary rooms, offering the same high-quality OLED performance in a more manageable form factor. The larger 65-inch and 77-inch models provide a more immersive experience for main living areas, but the consistency in design across all sizes ensures that users can choose the right fit for their space without compromising on aesthetics. The remote control, while functional, has been criticized for its non-backlit buttons, which can be a minor inconvenience in low-light environments.
Value and Market Position
The LG C4 OLED offers strong value, especially considering the frequent price drops and sales that have made it more accessible since its launch. Business Insider noted that the C4 still offers great picture quality and is often available for significantly less than the newer 2025 models, making it an attractive option for budget-conscious buyers. What Hi-Fi? reported that the 42-inch model has seen substantial discounts, with prices dropping to around $999 in the US, which is competitive with other small OLED TVs on the market. The 48-inch model has also seen similar price reductions, enhancing its value proposition for those seeking a balance between size and performance.
When compared to its predecessor, the C3, the C4 offers incremental improvements in brightness and processing power, but the price difference is often minimal, especially when the C3 is on sale. TechRadar suggested that while the C4 is a better and brighter mid-range OLED, the decision to upgrade from a C3 may not be worth it for most users unless they are particularly sensitive to the brightness improvements. However, for new buyers, the C4 represents a sweet spot in the OLED market, offering flagship-level features at a mid-range price. The competition from brands like Sony and Samsung is fierce, but the C4’s combination of gaming features, picture quality, and value makes it a standout choice.
Where It Falls Short
Despite its many strengths, the LG C4 OLED has several notable shortcomings that potential buyers should consider. The most significant issue is the built-in audio, which is widely criticized for lacking depth and power. What Hi-Fi? and RTINGS.com both highlighted that the sound quality is inadequate for a TV of this price point, necessitating the purchase of an external soundbar for a satisfactory audio experience. Additionally, the webOS interface, while functional, is plagued by ads and occasional software glitches that can detract from the user experience. Reddit users have reported issues with app stability and slow loading times, which can be frustrating for those who rely heavily on streaming services.
Another area of concern is the potential for burn-in, a known risk with OLED technology. While LG has implemented various measures to mitigate this, such as pixel shifting and screen savers, users who plan to display static images for extended periods, such as news tickers or gaming HUDs, should be cautious. RTINGS.com noted that while the risk is lower than in previous generations, it is still present and should be considered by users with specific usage patterns. Finally, the non-backlit remote is a minor but persistent complaint, as it can be difficult to use in dark rooms, affecting the overall usability of the TV.
Who It Is Best For
The LG C4 OLED is an excellent choice for gamers who demand low input lag and high refresh rates, as well as movie enthusiasts who prioritize picture quality and color accuracy. Its comprehensive gaming features, including HDMI 2.1 support and VRR, make it a top pick for PS5 and Xbox Series X owners. The improved brightness and color performance also appeal to those who watch a lot of HDR content, as the OLED EX panel delivers vibrant and detailed images. What Hi-Fi? recommended the 42-inch and 48-inch models for users with smaller spaces or those who want a secondary TV for a bedroom or office, as they offer the same high-quality performance in a more compact form factor.
However, the C4 may not be the best fit for users who prioritize audio quality and do not want to invest in an external soundbar. The built-in speakers are weak and lack the depth required for an immersive audio experience, which could be a dealbreaker for those who prefer a all-in-one solution. Additionally, users who are sensitive to ads and software glitches may find the webOS interface frustrating, although these issues are relatively minor compared to the TV’s overall performance. Finally, those who plan to display static images for long periods should be cautious of the potential for burn-in, although this risk is mitigated by LG’s protective features. For most users, however, the C4’s strengths far outweigh its weaknesses, making it a versatile and high-performing OLED TV.
Strengths
- +Perfect black levels and infinite contrast
- +Four full HDMI 2.1 ports with 4K 120Hz
- +Dolby Vision IQ and HDR10 support
- +α9 AI Processor for upscaling
Watch-outs
- −Moderate peak brightness for HDR
- −Risk of burn-in with static content
- −No USB 3.0 support
How it compares
The best all-around OLED for most users, offering excellent gaming features and movie performance at a competitive price.
Who this is for
At a glance: Console gamers and movie enthusiasts seeking balanced performance.
Why you’d buy the LG C4 OLED
- Perfect black levels and infinite contrast.
- Four full HDMI 2.1 ports with 4K 120Hz.
- Dolby Vision IQ and HDR10 support.
Why you’d skip it
- Moderate peak brightness for HDR.
- Risk of burn-in with static content.
- No USB 3.0 support.
Rating sources
“The LG C4 OLED TV is a real winner in most categories thanks to stunning picture quality, game performance and features.”
“The bright, punchy picture put out by LG's mid-range C4 OLED TV captivated us when we first saw it, and now that we've completed a full review we can confirm that it does improve on last year's also-impressive LG C3.”
“And while LG doesn't offer a burn-in-specific warranty for this TV like it does for the G4, I'm confident all but the most hardcore gamers need not worry about gaming-triggered burn-in.”
Our 4.2 score is the average of these published ratings. Ratings marked * were derived from the reviewer’s written analysis or video transcript — the publisher didn’t print an explicit numeric score, so we inferred one from their own words. Click through to verify. More about methodology.
