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To try to better understand how long a TV should last, we're running 100 TVs through an accelerated longevity test for the next two years. We've just posted our 1-year video update with our latest findings on temporary image retention, burn-in, and more!

LG C4 OLED TV Review

Tested using Methodology v1.11
Reviewed May 02, 2024 at 10:42 am
LG C4 OLED Picture
8.9
Mixed Usage
Value for price beaten by
: LG G3 OLED
8.5
TV Shows
Value for price beaten by
: LG G3 OLED
8.8
Sports
Value for price beaten by
: LG G3 OLED
9.4
Video Games
Value for price beaten by
: LG C3 OLED
9.0
HDR Movies
Value for price beaten by
: LG C3 OLED
9.1
HDR Gaming
Value for price beaten by
: Samsung S90C OLED
9.3
PC Monitor
Value for price beaten by
: Samsung S90C OLED

The LG C4 OLED is the 2024 iteration in LG's popular C Series lineup and replaces last year's LG C3 OLED. It sits above the LG B4 OLED and below the LG G4 OLED. It uses LG's new α9 AI Processor Gen7, designed to provide better overall image processing than its predecessors. New to the C4 is the ability to game up to 144Hz, an upgrade from the maximum 120Hz on the models from the past few years. It also adds 'Filmmaker Mode' as a picture setting for Dolby Vision, designed to provide an accurate image without needing to tweak any settings. The TV uses the 2024 version of LG's webOS, and it has 40W 2.2 channel speakers built-in that can be virtually up-mixed to 9.1.2 using the α9 AI Sound Pro feature. It's available in six sizes: 42-inch, 48-inch, 55-inch, 65-inch, 77-inch, and 83-inch.

Our Verdict

8.9 Mixed Usage

The LG C4 is amazing for mixed usage. If you're a console or PC gamer, this TV is a fantastic choice due to its advanced gaming features. It has a nearly instantaneous response time for clear motion, which also makes it fantastic for playing video games, but also makes it excellent for watching sports or for use as a PC monitor. The TV is suitable for use in a bright room due to its very good SDR brightness and outstanding reflection handling. However, it also looks remarkable in a dark room thanks to its nearly infinite contrast ratio, with highlights that stand out in HDR content due to its great HDR brightness. Its wide viewing angle makes it suitable for watching TV with a group, but there's a noticeable green tint when viewed from an angle.

Pros
  • Near-infinite contrast ratio for perfect blacks with no blooming around bright highlights.
  • Very good SDR brightness and outstanding reflection handling makes it suitable for a bright room.
  • Nearly instantaneous response time for no noticeable blur behind fast motion.
  • Colors are vibrant and lifelike.
  • Great HDR peak brightness that makes highlights stand out.
Cons
  • Noticeable green tint when viewed from an angle.
8.5 TV Shows

The LG C4 is excellent for watching TV shows. It has very good SDR brightness and outstanding reflection handling, so it overcomes glare in a bright room. If you regularly watch shows on DVD or from low-quality streams, this TV does an excellent job of smoothing out low-quality content and is very good at upscaling low-resolution content. The built-in webOS is loaded with streaming apps, so finding the newest show you want to check out is easy. The TV is suitable for watching shows with friends due to its wide viewing angle, but unfortunately, there's a noticeable green tint the more you move off-center.

Pros
  • Very good SDR brightness and outstanding reflection handling makes it suitable for a bright room.
  • Great image processing with low-quality and low-resolution content.
Cons
  • Noticeable green tint when viewed from an angle.
8.8 Sports

The LG C4 is excellent for watching sports. There's no noticeable blur behind quick-moving players and objects due to the TV's nearly instantaneous response time. If you watch sports like hockey and football that have large areas of uniform colors, you won't be distracted by the dirty screen effect due to the TV's excellent uniformity. It overcomes glare thanks to its outstanding reflection handling and very good SDR brightness, so it's well-suited for a bright room. The TV is suitable for watching the game with friends due to its wide viewing angle, but unfortunately, there's a noticeable green tint the more you move off-center.

Pros
  • Excellent gray uniformity with no noticeable dirty screen effect.
  • Very good SDR brightness and outstanding reflection handling makes it suitable for a bright room.
  • Nearly instantaneous response time for no noticeable blur behind fast motion.
  • Great image processing with low-quality and low-resolution content.
Cons
  • Noticeable green tint when viewed from an angle.
9.4 Video Games

The LG C4 is outstanding for playing video games. The TV has HDMI 2.1 bandwidth on all four of its ports and supports up to 4k @ 144Hz with VRR, so it's a fantastic choice to pair with modern consoles or modern gaming PCs. The TV's exceptionally low input lag delivers a responsive gaming experience with no noticeable delay between your controller inputs and the action on screen, and there's no noticeable blur behind fast motion due to the TV's nearly instantaneous response time. The TV is suitable for use in a bright room due to its outstanding reflection handling and very good SDR brightness. It looks exceptional in a dark room due to its nearly infinite contrast ratio that delivers deep and inky blacks. Enabling Game Optimizer doesn't noticeably affect image quality, so you don't have to worry about trading picture quality for performance while gaming in SDR.

Pros
  • HDMI 2.1 bandwidth on all four ports.
  • Exceptionally low input lag for a very responsive experience.
  • Very good SDR brightness and outstanding reflection handling makes it suitable for a bright room.
  • Nearly instantaneous response time for no noticeable blur behind fast motion.
Cons
9.0 HDR Movies

The LG C4 is incredible for watching movies in a dark room. The TV's remarkable contrast and incredible black uniformity deliver deep, inky blacks with no blooming when bright highlights are on screen, so it looks exceptional in a dark room. It removes 24p judder from any source, so movies are judder-free regardless of how you watch them. If you care about accuracy in SDR, its very good pre-calibration accuracy delivers an image that is mostly accurate, although it can be made better with calibration. This TV has an excellent wide color gamut and very good color volume, displaying lifelike, vibrant, and fairly bright colors in HDR. Finally, highlights in HDR content stand out due to the TV's great HDR brightness, so HDR content has impact.

Pros
  • Near-infinite contrast ratio for perfect blacks with no blooming around bright highlights.
  • Removes 24p judder from any source.
  • Colors are vibrant and lifelike.
  • Great HDR peak brightness that makes highlights stand out.
  • Dolby Vision support.
  • DTS Audio support.
Cons
  • Noticeable stutter due to the TV's fast response time.
  • Aggressive ABL can be distracting with large areas of brightness.
9.1 HDR Gaming

The LG C4 is fantastic for playing video games in HDR. It has HDMI 2.1 bandwidth on all four of its ports for up to 4k @ 144Hz, and it supports VRR for a nearly tear-free gaming experience, so it's a fantastic option to pair with modern gaming consoles or PCs. It displays fast motion with no noticeable blur due to its nearly instantaneous response time, and its exceptionally low input lag delivers a responsive gaming experience with no noticeable delay between your controller inputs and what happens on screen. The TV looks remarkable in a dark room due to its nearly infinite contrast ratio, with deep, inky blacks. Unfortunately, the TV's HDR brightness is lower in Game Optimizer than in other picture modes, although highlights are still bright enough to deliver an impactful HDR gaming experience.

Pros
  • Near-infinite contrast ratio for perfect blacks with no blooming around bright highlights.
  • HDMI 2.1 bandwidth on all four ports.
  • Exceptionally low input lag for a very responsive experience.
  • Nearly instantaneous response time for no noticeable blur behind fast motion.
  • Colors are vibrant and lifelike.
  • Dolby Vision support.
Cons
  • Aggressive ABL can be distracting with large areas of brightness.
  • The TV is visibly dimmer while in 'Game Optimizer'.
9.3 PC Monitor

The LG C4 is superb for use as a PC monitor. Its excellent uniformity means you won't be distracted by the dirty screen effect when looking at large areas of uniform color, like browsing the web. The TV has very good SDR brightness and outstanding reflection handling, so it overcomes glare in a bright room, and its nearly instantaneous response time means there's no noticeable blur behind quick cursor movements or when scrolling through pages. You also get a very responsive desktop experience due to its exceptionally low input lag. Its incredibly wide viewing angle means you can sit close to the screen and the sides remain consistent with the center. The TV properly displays chroma 4:4:4 from a PC, which is essential for clear text. Unfortunately, due to its WRGB subpixel layout, there are still minor clarity issues with text, although most people won't be bothered by it.

Pros
  • HDMI 2.1 bandwidth on all four ports.
  • Exceptionally low input lag for a very responsive experience.
  • Excellent gray uniformity with no noticeable dirty screen effect.
  • Very good SDR brightness and outstanding reflection handling makes it suitable for a bright room.
  • Nearly instantaneous response time for no noticeable blur behind fast motion.
Cons
  • Text visibility issues due to the TV's WRGB subpixel layout.
  • 8.9 Mixed Usage
  • 8.5 TV Shows
  • 8.8 Sports
  • 9.4 Video Games
  • 9.0 HDR Movies
  • 9.1 HDR Gaming
  • 9.3 PC Monitor
  1. Updated May 02, 2024: Review published.
  2. Updated Apr 29, 2024: Early access published.
  3. Updated Apr 17, 2024: Our testers have started testing this product.
  4. Updated Apr 08, 2024: The product has arrived in our lab, and our testers will start evaluating it soon.
  5. Updated Mar 12, 2024: We've purchased the product and are waiting for it to arrive in our lab.

Differences Between Sizes And Variants

We bought and tested the 65-inch LG C4 (OLED65C4); these results are also valid for the 42, 48, 55, 77, and 83-inch sizes. Note that the last three letters in the model number (PUA in this case) vary between retailers and individual regions, but there's no difference in performance. The Costco/Sam's Club variant carries the suffix 'AUA,' supports Wi-Fi 6E (the PUA variant has Wi-fi 5), and comes with store-specific perks, like extended warranties.

Size US Model (Wi-Fi 5) Costco Variant (Wi-Fi 6E)
42" OLED42C4PUA OLED42C4AUA
48" OLED48C4PUA OLED48C4AUA
55" OLED55C4PUA OLED55C4AUA
65" OLED65C4PUA OLED65C4AUA
77" OLED77C4PUA OLED77C4AUA
83" OLED83C4PUA OLED83C4AUA

Our unit was manufactured in March 2024; you can see the label here.

Compared To Other TVs

The LG C4 OLED is an amazing TV that further cements the C Series lineup as some of the best WOLEDs on the market. It's a bit brighter than the LG C3 OLED in HDR, has slightly better PQ EOTF tracking and color volume, and ups the maximum refresh rate to 144Hz. Unfortunately, like the C3, it doesn't maintain its HDR peak brightness while in Game Optimizer. It also has a worse overall viewing angle, with a noticeable green tint that worsens as you move more off-center. Unless you need the 144Hz refresh rate or its other small upgrades, you're better off getting the cheaper LG C3 OLED while it's still available and regularly on sale. You can even find last year's better and higher-end LG G3 OLED on sale for less than the C4 currently is.

For more options, check out our recommendations for the best OLED TVs, the best gaming TVs, and the best TVs for watching movies.

LG C3 OLED
42" 48" 55" 65" 77" 83"

The LG C4 OLED is slightly better than the LG C3 OLED. The C4 gets brighter in HDR, so highlights pop a little bit more on it. The C4 also has slightly better PQ EOTF tracking, so it's a bit more accurate when it comes to the content creator's intent, and its better color volume delivers slightly brighter colors. If you're a PC gamer looking to take full advantage of your high-end graphics card, the C4 supports up to 144Hz versus 120Hz on the C3, so it's the better option for that. However, when viewed from an angle, the C4 has a noticeable green tint, so the C3 is the better choice for wide seating arrangements.

LG G3 OLED
55" 65" 77" 83"

The LG G3 OLED is better than the LG C4 OLED. The G3 is the brighter TV overall, so highlights stand out more in HDR content, and it handles more glare in a bright room when watching SDR content. The G3 also has better color volume for brighter colors, and the image barely degrades from an angle and doesn't have a noticeable green tint as the C4 does. However, the C4 supports 144Hz, so it's better for those looking to get the most out of their powerful gaming PCs.

LG C2 OLED
42" 48" 55" 65" 77" 83"

The LG C4 OLED is better than the LG C2 OLED. The C4 gets a lot brighter in HDR, so highlights stand out more than they do on the relatively dim C2, leading to a more impactful HDR experience. The C4 also has better color volume for brighter colors, better HDR gradient handling for less banding, and better upscaling with low-resolution content for a sharper image. On top of that, the C4 supports 144Hz, so it's the better option for gamers with powerful PCs.

LG C1 OLED
48" 55" 65" 77" 83"

The LG C4 OLED is better than the LG C1 OLED. It gets brighter overall, so it overcomes more glare in a bright room while watching SDR content, and highlights pop way more while watching HDR content. The C4 has significantly better pre-calibration accuracy, so colors are displayed much more accurately, and it displays colors brighter in HDR due to its better color volume. The C4 also has a sharper and cleaner image when watching low-resolution or low-quality content due to its better image processing and has less banding due to its better HDR gradient handling. On top of that, the C4 supports 144Hz, which is great for PC gamers with high-end rigs.

LG G4 OLED
55" 65" 77" 83" 97"

The LG G4 OLED is better than the LG C4 OLED. The G4 gets brighter overall, so it overcomes more glare in a bright room while watching SDR content, and highlights pop more in HDR content. The G4 also maintains its HDR brightness much better while in 'Game Optimizer.' On top of that, the G4 is more accurate before calibration, has less banding in colors, and doesn't have a green tint when viewed from an angle.

Samsung S90D/S90DD OLED
48" 55" 65" 77" 83"

The Samsung S90D/S90DD OLED is mostly better than the LG C4 OLED. The Samsung gets brighter in HDR, so bright highlights stand out more on it, and it maintains its HDR brightness better while in 'Game Mode.' The Samsung TV also has a wider color gamut, better color volume, and better HDR gradient handling, so colors in HDR are more vibrant, lifelike, brighter, and have less banding. The Samsung has a wider viewing angle, and the image doesn't have a green tint that worsens as you move off-center, so it's the better choice for watching TV in a group setting. However, the LG supports Dolby Vision and DTS audio formats, so it's the better option for those looking to get the most out of their physical media.

LG B4 OLED
55" 65" 77"

The LG C4 OLED is better than the LG B4 OLED for the most part. The C4 has better reflection handling and slightly better SDR peak brightness, so it handles a bit more glare in a bright room, and it has better low-quality content smoothing. The C4 also has better overall HDR brightness, so highlights in HDR content stand out a bit more on it. However, the C4 is noticeably dimmer while using the Game Optimizer, whereas the B4 maintains its brightness, so they are very similar in brightness while using that mode.

Samsung QN85D/QN85DD QLED
55" 65" 75" 85"

The LG C4 OLED is better than the Samsung QN85D/QN85DD QLED, but they use different panel technologies. The LG is an OLED, so it has perfect contrast, making it far superior to the Samsung when viewed in a dark room. The Samsung TV's QLED panel is brighter than the C4 in SDR content and in Game Mode when playing games, although the LG isn't far behind. Ultimately, the LG is the better product, except perhaps for those who almost exclusively watch SDR content in very bright rooms.

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Video

Test Results

perceptual testing image
Design
Design
Style
Curved No

The LG C4 has a very sleek and modern design. It's very similar to last year's LG C3 OLED, but the back has a unique stone-like finish. The TV's bezels are incredibly thin, so you barely see them while watching.

Design
Accelerated Longevity Test
Uniformity Pictures N/A
Design
Stand

The included stand on the 65-inch LG C4 is identical to the stand on last year's LG C3 OLED. The TV wobbles a bit when pushed on, but it quickly recovers, so this doesn't cause any issues. The stand lifts the screen about 2.7 inches above the table, so most soundbars fit underneath without blocking the screen. The 83-inch model uses a bigger stand, and the 42-inch model uses two wide-spread feet instead of a stand.

Footprint of the 65-inch stand: 18.5" x 9.0"

Design
Back
Wall Mount VESA 300x200

The back of the TV is made from plastic that is grainy to the touch and has a unique stone-like finish that really separates it from other TVs. Outside of that, the back is the same as the LG C3 OLED, with a large plastic central panel that houses the inputs. The inputs face the right which makes them easy to access if you have the TV on the stand, but they're still hard to reach when the TV is wall-mounted.

The back of the TV has clips that you can funnel cables through, and then they can be put through the clip on the stand to help with cable management.

Design
Borders
Borders 0.24" (0.6 cm)
Design
Thickness
Max Thickness 1.77" (4.5 cm)
9.0
Design
Build Quality

The build quality of this TV is incredible overall. There's a bit of flex near the VESA mounting points, but this is common and doesn't cause problems. The TV looks and feels premium.

Picture Quality
10
Picture Quality
Contrast
Contrast
Inf : 1
Native Contrast
Inf : 1

The LG C4 has remarkable contrast and a nearly infinite contrast ratio. Due to OLED's self-lit pixels, the TV displays bright highlights next to perfect inky blacks, making it very impressive in a dark room.

10
Picture Quality
Blooming

Since OLEDs don't use local dimming and instead have individual pixels that can be lit up to their maximum brightness next to pixels that are turned off, there's no blooming when bright elements are surrounded by deep blacks.

10
Picture Quality
Lighting Zone Transitions
Local Dimming
No
Backlight
No Backlight
Dimming Zones Count Of Tested TV
8,294,400

The LG C4 is an OLED and has no backlight, so its self-lit pixels give it the same performance as a TV with perfect local dimming and no zone transitions. We still film the zone transition video on the TV so you can see how it compares to a TV with local dimming.

9.5
Picture Quality
Contrast And Dark Details In Game Mode

There's no difference in dark scene behavior between the calibrated picture modes and when the TV is set in Game Optimizer.

8.3
Picture Quality
HDR Brightness
Hallway Lights (~1950 cd/m²)
804 cd/m²
Yellow Skyscraper (~700 cd/m²)
590 cd/m²
Landscape Pool (~300 cd/m²)
265 cd/m²
Peak 2% Window
950 cd/m²
Peak 10% Window
932 cd/m²
Peak 25% Window
614 cd/m²
Peak 50% Window
331 cd/m²
Peak 100% Window
194 cd/m²
Sustained 2% Window
917 cd/m²
Sustained 10% Window
905 cd/m²
Sustained 25% Window
582 cd/m²
Sustained 50% Window
328 cd/m²
Sustained 100% Window
192 cd/m²
Automatic Brightness Limiting (ABL)
0.096

The LG C4 has great HDR brightness. It gets bright enough for most highlights to pop, but it's not bright enough to properly display very bright highlights. Still, it delivers an impactful HDR experience. Unfortunately, large bright scenes are significantly dimmer than smaller, specular highlights due to its aggressive Automatic Brightness Limiter (ABL).

These measurements are after calibrating the HDR white point with the following settings:

  • HDR Picture Mode: Cinema
  • OLED Pixel Brightness: 100
  • Contrast: 100
  • Auto Dynamic Contrast: Off
  • Dynamic Tone Mapping: Off
  • Expression Enhancer: Off
  • Peak Brightness: High

7.5
Picture Quality
HDR Brightness In Game Mode
Hallway Lights (~1950 cd/m²)
798 cd/m²
Yellow Skyscraper (~700 cd/m²)
415 cd/m²
Landscape Pool (~300 cd/m²)
165 cd/m²
Peak 2% Window
920 cd/m²
Peak 10% Window
923 cd/m²
Peak 25% Window
491 cd/m²
Peak 50% Window
296 cd/m²
Peak 100% Window
196 cd/m²
Sustained 2% Window
891 cd/m²
Sustained 10% Window
894 cd/m²
Sustained 25% Window
472 cd/m²
Sustained 50% Window
294 cd/m²
Sustained 100% Window
195 cd/m²
Automatic Brightness Limiting (ABL)
0.097

The LG C4 is noticeably dimmer while in Game Optimizer. It's still bright enough to provide an impactful HDR gaming experience, but you notice the drop in brightness compared to the TV's other picture modes.

These measurements are after calibrating the HDR white point with the following settings:

  • HDR Picture Mode: Game Optimizer
  • OLED Pixel Brightness: 100
  • Contrast: 100
  • Auto Dynamic Contrast: Off
  • Dynamic Tone Mapping: HGiG
  • Expression Enhancer: Off
  • Peak Brightness: High

9.5
Picture Quality
PQ EOTF Tracking
600 Nit Tracking Delta
0.0033
1000 Nit Tracking Delta
0.0033
4000 Nit Tracking Delta
0.0039

The LG C4 has fantastic PQ EOTF tracking. Some darker shadows and mid-tones are a bit brighter than intended, but the TV tracks the curve very closely. With content mastered at 600 or 1000 nits, there's a very small roll-off to preserve some detail in highlights. With content mastered at 4000 nits, there's a much more gradual roll-off to preserve detail in very bright highlights.

7.8
Picture Quality
SDR Brightness
Real Scene Peak Brightness
411 cd/m²
Peak 2% Window
427 cd/m²
Peak 10% Window
425 cd/m²
Peak 25% Window
405 cd/m²
Peak 50% Window
382 cd/m²
Peak 100% Window
259 cd/m²
Sustained 2% Window
420 cd/m²
Sustained 10% Window
420 cd/m²
Sustained 25% Window
401 cd/m²
Sustained 50% Window
379 cd/m²
Sustained 100% Window
258 cd/m²
Automatic Brightness Limiting (ABL)
0.030

The LG C4 has very good SDR brightness. It gets bright enough to handle glare in a bright room, and the TV's Automatic Brightness Limiter isn't aggressive in SDR, so you don't have to deal with the screen dimming considerably when large areas of brightness are present.

These measurements are after calibration with the following settings:

  • Picture Mode: Dark Space, night
  • OLED Pixel Light: 100
  • Peak Brightness: High
  • Color Temperature: Warm 50

8.6
Picture Quality
Color Gamut
Wide Color Gamut
Yes
DCI P3 xy
98.07%
DCI P3 uv
99.32%
Rec 2020 xy
72.47%
Rec 2020 uv
75.94%

The LG C4 has an excellent color gamut. It has outstanding coverage of the DCI-P3 color space used in most HDR content. Colors are mapped well in the DCI-P3 color space, but all colors are undersaturated and off the mark to some degree. These results are with an aggressive 75% stimulus level. With a more realistic 50% stimulus, color accuracy is much better.

The TV has good coverage of the wider Rec. 2020 space, which is increasing in popularity. Colors are more off in the Rec. 2020 color space, with cyans and greens being the most off, and all colors are undersaturated.

8.1
Picture Quality
Color Volume
1,000 cd/m² DCI P3 Coverage ITP
79.2%
10,000 cd/m² Rec 2020 Coverage ITP
36.2%
White Luminance
1,008 cd/m²
Red Luminance
104 cd/m²
Green Luminance
333 cd/m²
Blue Luminance
38 cd/m²
Cyan Luminance
365 cd/m²
Magenta Luminance
134 cd/m²
Yellow Luminance
425 cd/m²

The LG C4 has very good color volume. It displays dark, saturated colors very well, and its ability to display bright whites is outstanding. It doesn't display other colors as brightly as it does whites, but it's still enough to display bright and vibrant colors.

With the TV set to Game Optimizer, there's a visible decrease in color luminance, and you can see the measurements below.

  • White Luminance: 991 cd/m²
  • Red Luminance: 98 cd/m²
  • Green Luminance: 310 cd/m²
  • Blue Luminance: 32 cd/m²
  • Cyan Luminance: 340 cd/m²
  • Magenta Luminance: 127 cd/m²
  • Yellow Luminance: 409 cd/m²

8.1
Picture Quality
Pre Calibration
White Balance dE
3.07
Color dE
1.33
Gamma
2.16
Color Temperature
6,112 K
Picture Mode
Expert (Dark Space)
Color Temp Setting
Warm 50
Gamma Setting
2.2

The LG C4 has very good pre-calibration accuracy. Its white balance is decent, but there's too much red in almost all shades of gray. Gamma is very close to our target of 2.2, but very dark scenes and brighter scenes are a bit too bright. Color temperature is very good, but it's warmer than our target of 6500K, and color accuracy is excellent, with only noticeable inaccuracies in whites and lighter yellows.

9.7
Picture Quality
Post Calibration
White Balance dE
0.26
Color dE
0.62
Gamma
2.20
Color Temperature
6,460 K
White Balance Calibration
22 point
Color Calibration
Yes

The TV has exceptional accuracy after calibration to the D65 white point. The white balance and gamma are now essentially perfect. Color accuracy is even better than before, with no noticeable inaccuracies, and color temperature is incredibly close to our target of 6500K.

You can see our full calibration settings here.

8.8
Picture Quality
Gray Uniformity
50% Std. Dev.
1.063%
50% DSE
0.120%
5% Std. Dev.
0.323%
5% DSE
0.102%

The LG C4 has excellent gray uniformity. If you look closely, there are some very faint vertical lines on the panel, but these aren't noticeable from a normal viewing distance.

10
Picture Quality
Black Uniformity
Std. Dev.
N/A
Native Std. Dev.
0.144%

Because OLEDs can turn off individual pixels, the TV has incredible black uniformity with no blooming or halo effect around bright objects.

8.9
Picture Quality
Viewing Angle
Color Washout
48°
Color Shift
27°
Brightness Loss
70°
Black Level Raise
70°
Gamma Shift
70°

The LG C4 has an excellent viewing angle, but there's a major caveat. The screen has a very noticeable green tint when you look at it from an angle, and the green tint worsens the more you move off-center.

9.4
Picture Quality
Reflections
Screen Finish
Glossy
Total Reflections
1.3%
Indirect Reflections
0.1%
Calculated Direct Reflections
1.1%

The TV has outstanding reflection handling. Its glossy screen finish significantly reduces the intensity of indirect reflections and does a fantastic job of reducing the intensity of direct reflections.

7.8
Picture Quality
HDR Native Gradient
100% Black to 50% Gray
6.0
50% Gray to 100% White
6.0
100% Black to 50% Red
8.0
50% Red to 100% Red
10
100% Black to 50% Green
8.0
50% Green to 100% Green
6.0
100% Black to 50% Blue
10
50% Blue to 100% Blue
8.0

The TV has very good HDR native gradient handling. There's some noticeable banding in bright grays, dark grays, and bright greens, but all other colors have minimal banding or no banding at all.

8.6
Picture Quality
Low-Quality Content Smoothing
Smoothing
9.0
Detail Preservation
7.5

The TV has excellent low-quality content smoothing. There's no noticeable macro-blocking in dark areas, and details are preserved well.

8.0
Picture Quality
Upscaling: Sharpness Processing

The LG C4 does a very good job at upscaling low-resolution content like DVDs or lower-resolution streams. Details are clear enough, but very fine details are hard to make out.

Sharpness processing was calibrated with no over-sharpening for low-resolution content, with the following settings:

  • Sharpness: 16
  • Super Resolution: Off

Picture Quality
Pixels
Subpixel Layout
RWBG
Type OLED
Sub-Type
WOLED

The LG C4 uses a WOLED panel with a WRGB pixel structure where all four pixels are never lit at the same time. Due to its subpixel layout, it has minor issues with displaying text on Windows since ClearType isn't well optimized to non-RGB subpixel layouts, but most users won't be bothered by this.

Motion
9.9
Motion
Response Time
80% Response Time
0.2 ms
100% Response Time
2.3 ms

The LG C4 has a nearly instantaneous response time, resulting in incredibly clear motion with almost no blur behind fast-moving objects. Due to the sample-and-hold nature of OLED technology, there's still some persistence blur when gaming at 60Hz, but it's not noticeable at higher refresh rates.

10
Motion
Flicker-Free
Flicker-Free
No
PWM Dimming Frequency
0 Hz

The LG C4 doesn't have a traditional backlight and doesn't use pulse-width modulation (PWM) to dim each pixel, but it's not completely flicker-free. There's a slight dip in brightness that corresponds to the TV's refresh rate. This differs from the PWM flicker on TVs with LED backlights and occurs on every OLED we've tested. It's not noticeable, and most people won't be bothered by this, but it can still bother people who are extra sensitive to flicker.

Motion
Black Frame Insertion (BFI)
Optional BFI
Yes
Min Flicker For 60 fps
60 Hz
60Hz For 60 fps
Yes
120Hz For 120 fps
No
Min Flicker for 60 fps in Game Mode
60 Hz

The TV has an optional black frame insertion (BFI) feature that reduces the appearance of persistence blur caused by the TV's nearly instantaneous response time. It can only insert black frames at a 60Hz refresh rate.

Motion
Motion Interpolation
Motion Interpolation (30 fps)
Yes
Motion Interpolation (60 fps)
Yes

The TV has an optional motion interpolation feature to help improve the appearance of motion. It works well with slower scenes but struggles with fast-moving action, so there's noticeable haloing and artifacts present in busier scenes, especially if you use the settings too aggressively.

5.0
Motion
Stutter
Frame Hold Time @ 24 fps
39.4 ms
Frame Hold Time @ 60 fps
14.4 ms

Unfortunately, due to the TV's nearly instantaneous pixel response time, there's stutter with low frame rate content, which is most noticeable during slow panning shots.

10
Motion
24p Judder
Judder-Free 24p
Yes
Judder-Free 24p via 60p
Yes
Judder-Free 24p via 60i
Yes
Judder-Free 24p via Native Apps
Yes

The TV removes judder when watching 24p movies or TV shows when the Real Cinema setting is enabled, even from sources that can only send a 60Hz signal, like a cable box. Unfortunately, movies and TV shows aren't judder-free when BFI is enabled because the BFI feature only flickers at 60Hz.

9.5
Motion
Variable Refresh Rate
Native Refresh Rate
144 Hz
Variable Refresh Rate
Yes
HDMI Forum VRR
Yes
FreeSync
Yes
G-SYNC Compatible
Yes (NVIDIA Certified)
4k VRR Maximum
144 Hz
4k VRR Minimum
< 20 Hz
1080p VRR Maximum
144 Hz
1080p VRR Minimum
< 20 Hz
1440p VRR Maximum
144 Hz
1440p VRR Minimum
< 20 Hz
VRR + Local Dimming No Local Dimming

The TV supports FreeSync and HDMI Forum VRR and is certified as G-SYNC compatible, ensuring a nearly tear-free gaming experience from any VRR-enabled source.

Inputs
9.7
Inputs
Input Lag
1080p @ 60Hz
10.0 ms
1080p @ 60Hz Outside Game Mode
89.6 ms
1080p @ 120Hz
5.3 ms
1080p @ 144Hz
4.6 ms
1440p @ 60Hz
9.9 ms
1440p @ 120Hz
5.3 ms
1440p @ 144Hz
4.5 ms
4k @ 60Hz
9.9 ms
4k @ 60Hz + 10-Bit HDR
9.9 ms
4k @ 60Hz @ 4:4:4
9.9 ms
4k @ 60Hz Outside Game Mode
89.5 ms
4k @ 60Hz With Interpolation
85.5 ms
4k @ 120Hz
5.3 ms
4k @ 144Hz
4.6 ms
8k @ 60Hz
N/A

The LG C4 has exceptionally low input lag when set to Game Optimizer with 'Prevent Input Delay' set to 'Boost,' resulting in a very responsive gaming experience with very little delay between the actions on your controller and what happens on screen. For chroma 4:4:4 to work properly, you must set the input label to 'PC,' or the '4:4:4 Passthrough' setting must be enabled.

If you're a retro gamer, you can see the input lag results in 4:3 @ 60Hz below.

  • 640x480: 27.2 ms
  • 800x600: 33.8 ms
  • 1024x768: 26.8 ms

9.6
Inputs
Supported Resolutions
Resolution 4k
480p @ 59.94Hz (Widescreen)
Yes
720p @ 59.94Hz
Yes
1080p @ 60Hz @ 4:4:4
Yes
1080p @ 120Hz
Yes
1080p @ 144Hz
Yes
1440p @ 60Hz
Yes (forced resolution required)
1440p @ 120Hz
Yes
1440p @ 144Hz
Yes
4k @ 60Hz
Yes
4k @ 60Hz @ 4:4:4
Yes
4k @ 120Hz
Yes
4k @ 120Hz @ 4:4:4
Yes
4k @ 144Hz
Yes
8k @ 30Hz or 24Hz
No
8k @ 60Hz
No

The LG C4 supports all common formats. It displays chroma 4:4:4 properly, which is important for clear text from a PC.

There are two settings you can use to passthrough proper chroma 4:4:4. The first is to change the input label to 'PC.' The second is to enable the '4:4:4 Passthrough' setting in the 'HDMI Settings' menu. Both of these options work the same and lock you out from using the 'Peak Brightness,' 'Noise Reduction,' 'MPEG Noise Reduction,' 'Smooth Gradation,' and 'Real Cinema' settings.

Inputs
PS5 Compatibility
Auto Low Latency Mode (ALLM)
Yes
4k @ 120Hz
Yes
1440p @ 120Hz
Yes
1080p @ 120Hz
Yes
HDR
Yes
VRR
Yes

The TV is fully compatible with everything the PS5 offers, like 1440p @ 120Hz and 4k @ 120Hz, as well as HDMI Forum VRR. It also supports Auto Low Latency Mode, so you don't have to worry about switching to Game Optimizer to get the lowest input lag.

Inputs
Xbox Series X|S Compatibility
Auto Low Latency Mode (ALLM)
Yes
4k @ 120Hz
Yes
1440p @ 120Hz
Yes
1080p @ 120Hz
Yes
HDR
Yes
VRR
Yes

The TV is fully compatible with everything the Xbox Series X|S offers, including 1440p @ 120Hz, 4k @ 120Hz, HDMI Forum VRR, FreeSync Premium Pro, and Dolby Vision gaming. It also supports Auto Low Latency Mode, so you don't have to worry about switching to Game Optimizer to get the lowest input lag.

Inputs
Inputs Specifications
HDR10
Yes
HDR10+
No
Dolby Vision
Yes
HLG
Yes
HDMI 2.0 Full Bandwidth
Yes (HDMI 1,2,3,4)
HDMI 2.1 Class Bandwidth
Yes (HDMI 1,2,3,4)
CEC Yes
HDCP 2.2 Yes (HDMI 1,2,3,4)
ATSC Tuner
1.0
USB 3.0
No
Variable Analog Audio Out No
Wi-Fi Support Yes (2.4 GHz, 5 GHz)

The LG C4 supports the full 48Gbps bandwidth of HDMI 2.1 on all four HDMI ports. This allows you to take full advantage of multiple high-bandwidth devices, like if you own both current-gen consoles and a high-end gaming PC.

Inputs
Input Photos
Inputs
Total Inputs
HDMI 4
USB 3
Digital Optical Audio Out 1
Analog Audio Out 3.5mm 0
Analog Audio Out RCA 0
Component In 0
Composite In 0
Tuner (Cable/Ant) 1
Ethernet 1
DisplayPort 0
IR In 0
Inputs
Audio Passthrough
ARC/eARC Port
eARC
eARC: Dolby Atmos Over Dolby Digital Plus
Yes
eARC: Dolby Digital Plus 7.1
Yes
eARC: LPCM 7.1 Over Dolby MAT
Yes
eARC: Dolby TrueHD 7.1
Yes
eARC: DTS:X Over DTS-HD MA
Yes
eARC: DTS-HD Master Audio 7.1
Yes
eARC: LPCM Channels (Bitstream)
7.1
ARC: Dolby Digital 5.1
Yes
ARC: DTS 5.1
Yes
Optical: Dolby Digital 5.1
Yes
Optical: DTS 5.1
Yes

The TV supports many audio formats, including DTS audio formats, which is great if you like to watch DVDs or Blu-rays, as they often use DTS for their main audio tracks.

Sound Quality
6.7
Sound Quality
Frequency Response
Low-Frequency Extension
80.00 Hz
Std. Dev. @ 70
1.18 dB
Std. Dev. @ 80
1.68 dB
Std. Dev. @ Max
5.56 dB
Max
84.2 dB SPL
Dynamic Range Compression
5.13 dB

The LG C4 has an alright frequency response. The TV speakers produce a small amount of bass, but it's not enough to have much impact on the viewer. The sound profile is well-balanced enough that the dialogue is clear, but the TV doesn't get very loud, and there are compression and pumping artifacts at maximum volume.

7.7
Sound Quality
Distortion
Weighted THD @ 80
0.074
Weighted THD @ Max
0.408
IMD @ 80
1.32%
IMD @ Max
2.89%

The TV's distortion handling is good. There's no audible distortion at moderate listening levels, but there's noticeable distortion at max volume.

Smart Features
8.5
Smart Features
Interface
Smart OS webOS
Version 24
Ease of Use
Easy
Smoothness
Average
Time Taken to Select YouTube
2 s
Time Taken to Change Backlight
3 s
Advanced Options
Many

The TV runs the 2024 version of LG's proprietary smart interface, webOS. The interface is fast and easy to use, and it supports user profiles, so you can customize the home page for different users.

The TV has a bug that causes the occasional black screen when changing resolutions and refresh rates frequently in a short period. The only fix for this is to unplug and re-plug the TV, but this is unlikely to happen with real-world usage.

0
Smart Features
Ad-Free
Ads
Yes
Opt-out
No
Suggested Content in Home
No
Opt-out of Suggested Content
No

There are two settings in the 'Home Settings' menu, namely the 'Home Promotion' and 'Content Recommendation' settings. These settings remove the top banner ads and suggested content from the home screen. This gives your home screen a clean look, but there's no way to remove ads from the apps page.

8.0
Smart Features
Apps and Features
App Selection
Great
App Smoothness
Average
Cast Capable
Yes
USB Drive Playback
Yes
USB Drive HDR Playback
Yes
HDR in Netflix
Yes
HDR in YouTube
Yes

The LG C4 has a great selection of apps, so it's easy to find your favorite content. You can also cast content from your phone onto the TV or play videos from a USB stick.

9.0
Smart Features
Remote
Size
Large
Voice Control
Many Features
CEC Menu Control
Yes
Other Smart Features
Yes
Remote App LG ThinQ

The LG C4 has the same Magic Remote as the LG C3 OLED. You can use the remote as a pointer or use the traditional buttons to control the TV. The TV also supports hands-free voice control through microphones on the unit itself. You can use your voice to change inputs, open apps, search for content, and ask for the weather and time.

Smart Features
TV Controls

A single button is on the bottom of the TV in the middle. You can use it to turn the TV on or off, change inputs or channels, and control the volume.

Smart Features
In The Box

  • Remote (with 2x AA batteries)
  • IR blaster
  • User manuals
  • Stickers

Smart Features
Misc
Power Consumption 78 W
Power Consumption (Max) 215 W
Firmware 03.10.31