LG 55 B4 vs Philips OLED770

Direct compare

B46 / B42 / B43

Info

Available screen sizes: 55”65”77”

Available screen sizes: 48”55”65”

Panel type: WRGB OLED

Resolution: 3840x2160

System: WebOS

Model year: 2024

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Panel type: WRGB OLED

Resolution: 3840x2160

System: Titan OS

Model year: 2025

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Overall rating

8.1

7.5

  • Movies and series in UHD quality

    8.1

    8.0

  • Classic TV, YouTube

    8.8

    8.6

  • Sports broadcasts (TV and apps)

    8.6

    8.4

  • Gaming on console

    9.3

    9.2

  • TV as a computer monitor

    7.6

    7.6

  • Watching in bright light

    5.7

    4.8

  • Utility functions

    8.9

    5.5

  • Apps

    9.1

    6.7

  • Sound quality

    7.1

    7.0

Advantages

  • Reference colour reproduction after calibration

  • Very good image compliance with the director's intentions

  • Excellent compatibility with consoles and PCs

  • Advanced motion smoothing system

  • Deep and vivid image

  • Developed WebOs system and "mouse" remote

  • Excellent image quality typical of OLED – perfect blacks, infinite contrast

  • AmblightTV system

  • Support for multiple HDR formats including Dolby Vision and HDR10+

  • Great image quality after calibration

  • Decent viewing angles

  • Excellent motion smoothness – 120Hz OLED panel!

  • Many features for gamers: VRR, ALLM, Dolby Vision Gaming

  • Low input lag

  • 4 HDMI 2.1 ports!

Disadvantages

No like
  • Visible tonal transitions

  • TitanOS has very few apps and has annoying bugs

  • The remote works on infrared

  • Not the best upscaling quality

  • Average reflection suppression – the screen behaves like a slightly dimmed mirror

Our verdict

LG OLED B4 is an exceptionally versatile device in the semi-premium category. For how else can you describe an OLED television that is so well-priced, and whose price, as history shows, will quickly drop? Perfect blacks and contrast are two things that inevitably hypnotise, and we are sure that anyone who has ever owned a device with this panel will not be able to return to LCD units. The brightness results of the TV in HDR content may seem quite low, however, in this case, due to such a panel, they will appear optically much higher. It is worth noting their stability and uniformity in practically every scene. In this case, a minor downside is the brightness of full-frame content filled with a lot of white. However, we do not consider this a serious issue, as there are not many such instances. The factory colour reproduction also deserves praise, which in our unit is quite decent, but one cannot help but recall the beneficial effect calibration had on the image, allowing the director's intentions to be conveyed in full. LG B4 will be an excellent choice for all sorts of gamers, as well as sports fans. The former will certainly appreciate the rich support in the form of all the conveniences arising from the HDMI 2.1 standard. Meanwhile, the latter will enjoy the advanced motion smoother with multi-level adjustment. And finally, it is impossible not to mention the convenience resulting from the remote control with a built-in gyroscope, which allows it to function like a mouse. The WebOS system, which we will navigate, is incredibly smooth and responsive. It offers a multitude of applications that will be more than sufficient for the vast majority of users. The heart of the LG B4 TV is the advanced Alpha processor, which is responsible for image smoothness and advanced signal analysis. In summary: who is the LG OLED B4 for? It is the perfect device for those expecting the highest possible image quality within a given budget, but not only that. The LG B4 clearly stands out from the competition at its price point, which cannot offer such high-quality image in this price range.

Philips OLED770 is a television that stands out primarily for its picture quality – the characteristic perfect black and infinite contrast typical of OLEDs make even a regular evening of binge-watching a series feel like a small cinematic experience. After calibration, the colours gain naturalness and consistency, while details in dark scenes are separated from the lights with surgical precision. This is a screen that gives the feeling of engaging with premium-class technology, even though it is formally a budget OLED in Philips' portfolio. The second pillar on which the OLED770 stands very strong is gaming. Here, the manufacturer has really done their homework. VRR works up to 120 Hz, we have an automatic game mode (ALLM), and input lag in standard HDR10 or SDR modes at 120 Hz can drop to as low as 5 ms – these are results that will easily satisfy even the most demanding gamers. And finally, the Ambilight system – for many it’s a gadget, but during longer sessions, it truly makes a difference. The colourful LEDs behind the screen dynamically respond to what's happening in the game, and can pull you deeper into the virtual world. It’s precisely for this reason that one could risk saying that the OLED770 is one of the more interesting budget gaming TVs on the market.

However, not everything shines so brightly, because when we come to the Smart TV aspect… TitanOS is the biggest drawback of this model. Theoretically, we have everything we need: access to apps, AirPlay support, and voice commands. In practice, though, the list of apps is limited, screen mirroring often doesn’t work at all, and voice search does not support the Polish language. Moreover, the remote, although well-designed and backlit – operates on infrared, which sounds almost anachronistic in 2025. The system is purportedly fast, but it can irritate with errors, and instead of encouraging usage, at times, it rather urges us to turn it off. And here we reach the crux: the OLED770 is a television that performs excellently as a screen for movies and games, but not necessarily as a multimedia hub for the home. For someone who mainly uses a console, home cinema, or operator's decoder – it will be a solid choice. We get fantastic picture quality, a full set of modern gaming features, and of course, the proprietary AmbilightTV backlighting system! But if someone is looking for a television that has to replace everything and serve as a multimedia powerhouse, it would be better to look towards the more expensive Philips models that offer more refined system solutions like GoogleTV.

TV appearance

HDMI inputs
0 x HDMI 2.0, 4 x HDMI 2.1 (48Gbps)
0 x HDMI 2.0, 4 x HDMI 2.1 (48Gbps)
Other inputs
Outputs
Toslink (Optical audio), eARC (HDMI), ARC (HDMI)
Toslink (Optical audio), eARC (HDMI), ARC (HDMI), Mini-Jack (Headphones)
Network Interfaces
Wi-Fi 2.4GHz, Wi-Fi 5GHz, Ethernet (LAN) 100Mbps
Wi-Fi 2.4GHz, Wi-Fi 5GHz, Ethernet (LAN) 100Mbps
Build quality
BuildQuality-Good
BuildQuality-Good
Stand type
Legs
Legs
Bezel colour
Black
Graphite
Stand
Fixed
Fixed
Accessories
Stand
Stand

Contrast and black detail

10/10

10/10

Contrast:

Review LG 55 B4 Contrast and black detail

Result

:1

Review LG 55 B4 Contrast and black detail

Result

:1

Review LG 55 B4 Contrast and black detail

Result

:1

Review LG 55 B4 Contrast and black detail

Result

:1

Review LG 55 B4 Contrast and black detail

Result

:1

Review Philips OLED770 Contrast and black detail

Result

:1

Review Philips OLED770 Contrast and black detail

Result

:1

Review Philips OLED770 Contrast and black detail

Result

:1

Review Philips OLED770 Contrast and black detail

Result

:1

Review Philips OLED770 Contrast and black detail

Result

:1

Halo effect and black detail visibility:

Review LG 55 B4 Contrast and black detail
Review Philips OLED770 Contrast and black detail

LG B4 uses OLED panels produced by LG Displays. The use of this type of panel gives us perfect contrast and black levels. Thanks to these conditions, the image is incredibly three-dimensional, almost as if it were three-dimensional. The manufacturer's series with the letter "B" has always been the ideal solution for those seeking very good image quality while not wanting to pay extra for features that are only available in higher series. Therefore, these models have been somewhat of a dark horse in this price range, as their competitive pricing primarily allowed them to compete with Mini LED televisions. It’s not hard to say that these models have won these battles due to the absence of characteristic flaws found in LCD receivers with multi-zone backlighting, such as blooming/halo effects or dimming of images with fine bright details. And as we can see in the test scenes from the films "Oblivion" and "Sicario 2," the image quality stands at the highest level. Looking at the first one, we see a spectacular play of lights that, despite their brightness, are perfectly separated from each other. Even the more difficult scene with the helicopter poses no problem for LG B4, showcasing a wealth of detail and the specific colour grading characteristic of this title.

In terms of black and contrast, the Philips OLED770 doesn’t introduce any revolutions – but with OLEDs, it would be hard to expect one. The organic matrix allows for complete blacking out of individual pixels, which in practice gives us almost perfect black and contrast that reaches infinity. Whether we’re watching night scenes in films or scenes full of tiny bright points, the TV precisely separates details from the background. There are no halo effects or other artifacts typical for LCD TVs with local dimming here. Choosing an OLED – also in the version of model 770 – you can be assured that in this category, the image will look fantastic.

HDR effect quality

6.3/10

6/10

Supported formats
HDR10, Dolby Vision, HLG
HDR10, Dolby Vision, HLG
Color gamut coverage
DCI P3: 99.0%, Bt.2020: 75.0%
DCI P3: 99.0%, Bt.2020: 74.5%

Luminance measurements in HDR:

Review LG 55 B4 Brightness measurement

Result

664 nit

Review LG 55 B4 Brightness measurement

Result

650 nit

Review LG 55 B4 Brightness measurement

Result

677 nit

Review LG 55 B4 Brightness measurement

Result

662 nit

Review LG 55 B4 Brightness measurement

Result

410 nit

Review Philips OLED770 Brightness measurement

Result

546 nit

Review Philips OLED770 Brightness measurement

Result

657 nit

Review Philips OLED770 Brightness measurement

Result

726 nit

Review Philips OLED770 Brightness measurement

Result

704 nit

Review Philips OLED770 Brightness measurement

Result

275 nit

Scene from the movie “Pan” (about 2800 nits)

Review LG 55 B4 HDR effect quality
Review Philips OLED770 HDR effect quality

Scene from the movie “Billy Lynn” (about 1100 nits)

Review LG 55 B4 HDR effect quality
Review Philips OLED770 HDR effect quality

Static HDR10

Review LG 55 B4 HDR effect quality
Review Philips OLED770 HDR effect quality

Dynamic: Dolby Vision

Dynamic: Dolby Vision

Review LG 55 B4 HDR effect quality
Review Philips OLED770 HDR effect quality

HDR luminance chart:

Philips OLED770

HDR luminance

Luminance of RGB colors

LG 55 B4

HDR luminance

Luminance of RGB colors

The brightness results in HDR materials LG B4 are very good. It is true that none of them exceed 1000 nits, although the luminance stability is excellent and looks practically the same in every scenario. The only moment where the tested television performs worse is the last scene, although this should not come as a surprise. Large frames filled with a lot of white have always been, and will likely continue to be, somewhat of a weakness for OLED televisions. However, the combination of perfect contrast, black levels, and brightness in the LG B4 allows for a full spectrum of the HDR effect. Additionally, the incredibly high coverage of the DCI-P3 colour gamut, which reached 99%, deserves recognition. As a result, colours look incredibly vibrant and stunning.

The Philips OLED770 doesn't try to compete with the brightest OLEDs on the market, and it's actually hard to expect that, as it's the entry-level model in Philips' range for 2025. In our measurements, it reached a maximum of around 700 nits, which allows for enjoyment of HDR effects in scenes where light appears in spots – for instance, in the flash of headlights or a starry sky. In such moments, the picture can truly amaze. However, it's different when there are more bright elements on the screen. The TV, like many cheaper OLEDs, restricts luminance at that point, and the entire image noticeably dims. This was best seen in a scene from the movie The Meg, where the sun rises behind an oil platform – the brightness dropped to around 250 nits, which is almost three times less. The HDR effect remains pleasing to the eye, but it's worth being aware that this model performs best in scenes with less intense light. Fortunately, the OLED770 also has an ace up its sleeve – the coverage of the DCI-P3 colour palette is as high as 99%, so colours in movies and games are vibrant and very close to what the creator intended.

Factory color reproduction

8.4/10

6.2/10

Review LG 55 B4 Factory color reproduction
Review Philips OLED770 Factory color reproduction

Factory Mode

After calibration

Review LG 55 B4 Factory color reproduction
Review Philips OLED770 Factory color reproduction

Factory Mode

After calibration

The best factory mode prepared by the manufacturer is "Filmmaker," and we used it throughout the entire testing procedure. We must admit that the unit we received straight out of the box had quite decent colour reproduction. The biggest issue in both SDR and HDR content turned out to be white balance. In the former, there was a strong dominance of red, resulting in a noticeable yellow tint in the displayed image, particularly evident on skin tones and whites. In high-quality materials, this colour was also pronounced, but due to a lack of blue, there were also signs of green visible. Besides these shortcomings, we also encountered issues with greyscale and the colours themselves.

The first measurements already show that the factory settings of the Philips OLED770 have a lot to improve, even in Filmmaker mode. The white balance chart clearly indicates a lack of blue, giving the image a slightly yellowish tint. In practice, white is not snow-like, but leans towards warmer hues – which some may even find appealing, but from a precision standpoint, this is a deviation from the norm. The gamma, on the other hand, tends to be on the darker side – the average value is around 2.6 instead of the reference 2.4. In mid-tones, the image appears muted and more saturated, which can look too "cinematic" but detracts a bit from the naturalness. However, the most significant issues are visible in colour reproduction. The average error is relatively high, and some colours – particularly shades of grey – deviate significantly from what should be seen. In everyday viewing, this means that sometimes colours may look less natural than we would wish.

Color reproduction after calibration

9.3/10

9/10

Review LG 55 B4 Color reproduction after calibration
Review Philips OLED770 Color reproduction after calibration
Review LG 55 B4 Color reproduction after calibration
Review Philips OLED770 Color reproduction after calibration

LG B4 has been providing very advanced calibration tools in its TVs for years. We can even say that as the only manufacturer on the market, it allows for such deep intervention in image adjustment. Thanks to these, we were able to calibrate the device so well. The evidence of this is the extremely low deltaE errors, which can be said to stand at a reference level. Both SDR and HDR materials now look exactly as the film director intended. It is no coincidence that TVs of this brand are most often used as preview screens for various graphic or post-production studios.

Philips OLED770 had shown signs from the start that it harboured significant potential, but it was hard to fully appreciate this in its factory settings. The image was often too warm, and some colours appeared as if they had lost their naturalness along the way. Calibration revealed that this television was very amenable to work – it responded to every adjustment and almost immediately unveiled another layer of its capabilities. The white balance was set in both SDR and HDR so that the yellowish haze disappeared and a neutral, clear white emerged. Gamma stabilised closer to perfection, which helped restore the naturalness of mid-tones, while shadows ceased to be artificially darkened, perhaps even with a slight brightening effect. The result was obvious... Movies are watched with greater ease; the image has cinematic depth without the feeling that something is overly darkened. However, the most interesting aspect was working on the colours. Factory errors were not dramatic, but slightly noticeable – skin tones could be too warm, and grey wasn’t always the shade we expected. After calibration, the error values dropped to around 2, and in many cases even below 1. This is a level that is definitely lower than the threshold of discernibility for the human eye. In other words, after correction, the colours finally “clicked” into place. Looking at the screen, we felt like the television had begun to speak with a full voice. Like an instrument that had finally been properly tuned.

Smoothness of tonal transitions

7.4/10

7.6/10

Review LG 55 B4 Smoothness of tonal transitions
Review Philips OLED770 Smoothness of tonal transitions
Review LG 55 B4 Smoothness of tonal transitions
Review Philips OLED770 Smoothness of tonal transitions
Review LG 55 B4 Smoothness of tonal transitions
Review Philips OLED770 Smoothness of tonal transitions
Review LG 55 B4 Smoothness of tonal transitions
Review Philips OLED770 Smoothness of tonal transitions

The smoothness of tonal transitions, often overlooked in various tests on competitive portals, is an equally important aspect of image quality assessment. It is particularly crucial when watching materials that feature a wealth of colours and many intricate effects, where textures blend together. This often leads to what's known as colour banding, or a lack of smooth gradation. The tested television handles tonal transition smoothing quite well. However, it's worth noting that it has its weaker moments, such as the bright colourful sky in the film "Kingsman" or "The Martian." These, however, are not issues that detract from the viewing pleasure. Therefore, we assess the quality of tonal transitions in LG B4 positively.

In this category, there’s a noticeable improvement compared to last year's Philips models. The OLED770 handles colour gradation significantly better, and strongly visible transitions or artificial banding occur less frequently than before. Interestingly, we achieved the best results in dark scenes – where most televisions, especially those with WOLED panels, tend to struggle the most. A good example is the shot of an actor floating in red water – the transition from intense red to black looks nearly perfect here, without the typical “stair steps.” The situation is somewhat worse in light parts of the image. With extremely bright gradients, particularly close to white, the television has trouble maintaining smoothness. This can be noticed, for example, in a scene from the film Kingsman, where in the background of the bright sky with the sun, subtle bands of the sunrise appear instead of a smooth blur. Fortunately, these situations are relatively rare, and in everyday viewing, the OLED770 presents itself very solidly and doesn’t disrupt immersion as was the case in last year's models.

Image scaling and smoothness of tonal transitions

7.9/10

7/10

Image without overscan on the SD signal
OK
OK
Smooth transition function
OK
OK

Smooth transition function

Review LG 55 B4 Image scaling and smoothness of tonal transitions
Review Philips OLED770 Image scaling and smoothness of tonal transitions

Image without overscan on the SD signal

Review LG 55 B4 Image scaling and smoothness of tonal transitions
Review Philips OLED770 Image scaling and smoothness of tonal transitions

In this paragraph, we will take another look at the tonal transition smoothing feature, but we will also check how the TV handles lower quality material. As we have managed to check, the setting responsible for smooth gradation works quite effectively, although it has its weaker moments. While the feature works well with SDR content, it becomes less useful with HDR content. Even at the lowest of options, it blurs essential details, so we advise against using it.

The image scaling on LG B4 is rated fairly moderately positively. Although there is no edge splitting, the image itself is naturally "soft". We can change this by adjusting the sharpness slider.

The problem of the previously mentioned colour connections can largely be mitigated thanks to the "distortion reduction" function, which is an algorithm for smoothing tonal transitions in Philips. It works best at a low level – effectively eliminating unwanted colour bands while not introducing strange artifacts or losing image detail. This is one of those features that is truly worth keeping on.

The issue of upscaling is somewhat less impressive. Images from lower resolution can be too soft, while in some parts the characteristic "jaggies" appear. The impression is that the algorithm is trying to reconcile two contradictory directions – smoothing and sharpening – and ultimately fails to find the golden mean. As a consolation, it's worth noting that the television does not have problems with overscan, meaning it does not cut off the edges of the image, which can sometimes happen in other competing models.

Blur and motion smoothness

8.5/10

8.4/10

Maximum refresh rate of the panel
120Hz
120Hz
Film motion smoothing option
OK
OK
Blur reduction option
OK
OK
BFI function 60Hz
Yes, 60Hz (image flickers)
No
BFI function 120Hz
Yes, 120Hz
No
Brightness drop with BFI
49%
-%

Blur (native resolution, maximum refresh rate):

Blur (BFI function enabled):

Smużenie ():

Smużenie (4K@144Hz):

The maximum refresh rate we can set on the LG B4 is 120 Hz. This is the absolute minimum for those who require high image smoothness. The manufacturer has implemented a multi-level motion smoother called "TruMotion". It has been divided into two separate sliders that adjust the sharpness of moving images (De-Blur) and stuttering (De-Judder). Both sliders can be set in the range from 0 to 10, with each level affecting the degree of smoothness, so everyone can find their sweet spot.

The LG OLED B4 panel features an average response time of 0.1 ms (which directly results from our measurements), allowing for an incredibly clear image, unattainable for LCD TVs, which have response times of even several milliseconds. This can be clearly seen in images from the "UFO Test", showing no trace of blur trailing behind the object.

The issue of the panel in the Philips OLED770 is not entirely straightforward. The manufacturer claims a 120 Hz panel, but our measurements showed that the screen can accept a 4K signal even at 144 Hz. This sounds like great news – because who wouldn't want an additional mode for PC gamers at this price? However, the reality turned out to be more complex. With 120 Hz content, the television behaves like most OLEDs – the image is absolutely clear, with no trace of blurring or smearing, ideal for both dynamic games and sports broadcasts. The problem only arises at 144 Hz. Unlike models with official support for this frequency, here we see the phenomenon of so-called frame skipping. This means that the television is unable to display all the frames – some of them are skipped, causing motion to lose smoothness and double outlines to appear on the screen. The effect resembles the operation of the BFI function, which Philips does not offer in this model anyway.

Console compatibility and gaming features

10/10

10/10

  • ALLM
    Yes
    Yes
  • VRR
    Yes
    Yes
  • VRR range
    40 - 120Hz
    40 - 120Hz
  • Dolby Vision Game Mode
    Yes
    Yes
  • Correct implementation of HGIG
    Yes
    Yes
  • 1080p@120Hz
    Yes
    Yes
  • 1440p@120Hz
    Yes
    Yes
  • 4K@120Hz
    Yes
    Yes
  • Game bar
    Yes
    Yes

The LG B4 television is equipped with four full-fledged HDMI 2.1 ports with a full bandwidth of 48Gbps. All functions corresponding to this standard activated without any issues, and throughout the entire testing procedure, they caused no problems. The combination of such extensive functionality and low input lags leads us to say that the tested television is truly designed for gaming. This is not surprising, considering that the manufacturer has always placed great emphasis on this. Therefore, we can enjoy both a properly implemented HGIG mode and gameplay in Dolby Vision with low latency. Such a tandem will surely attract the attention of all passionate gamers for whom quality is the most important.

A standard feature in televisions from the Korean manufacturer is also the implementation of GameBar, allowing for quick adjustments of settings "on the fly," without the need to exit the game. It also enables image adjustments for individuals with visual impairments, which is an extremely nice touch. Another important piece of information is that when the VRR technology is turned on, we will not experience a drop in contrast. This is, of course, due to the construction of the panel and the lack of conventional backlighting. However, it is normal for shades of grey to flicker slightly, although this is a characteristic feature of this function regardless of the manufacturer and the television.

In summary: The LG B4, like all OLEDs from the manufacturer equipped with 120Hz panels and HDMI 2.1 ports, creates a harmonious whole with the console. In practice, it is a complete television, and if we expect the highest possible efficiency in gaming, the B4 will be the ideal choice.

If someone is looking for a TV for gaming, the Philips OLED770 is a candidate that's hard to overlook. The mere fact that this is an OLED gives it a great starting point – perfect blacks and infinite contrast make evening sessions in atmospheric games look like they've been taken straight out of a cinema. Added to that is the Ambilight system, which uses LEDs on the back of the TV to extend the image onto the wall behind the screen. The effect is such that even just playing FIFA can look like a small spectacle, and in horror games, the atmosphere becomes really thick. On the technical side, it's also quite decent. The Philips OLED770 supports variable refresh rate (VRR) up to 120 Hz, has an automatic mode for gamers (ALLM), and for those using an Xbox Series X, Dolby Vision support in games is also available. You just need to know that in this mode, the input lag is slightly higher than standard, although still at an acceptable level. As a bonus, we also get the 'Game Bar', which is a special tool strip for gamers. It's not the most conveniently designed solution, but it allows for a quick view of key parameters without exiting the game. Overall, this gives a picture of a TV that has all the most important gaming features on one hand, and on the other can add something unique – Ambilight. And it's this mix of technology and visual effect that makes the OLED770 one of the better screens for gaming in a home environment.

Input lag

10/10

9.8/10

SDR

1080p60
13 ms
14 ms
1080p120
5 ms
5 ms
2160p60
13 ms
13 ms
2160p120
5 ms
5 ms

HDR

2160p60
13 ms
13 ms
2160p120
5 ms
5 ms
4320p60

Dolby Vision

2160p60 DV
13 ms
30 ms
2160p120 DV
5 ms

Delay times for LG B4 are incredibly low in every scenario. Even the most passionate gamers will certainly appreciate the very low input lag of just 5 ms at demanding settings of 4K 120 Hz with HDR. It's also worth noting that the latency at the same settings, but with Dolby Vision HDR enabled, remains unchanged, which is not as obvious with the competition. Therefore, it deserves the highest rating and recommendation.

As we mentioned earlier, the only anomaly that has been captured during testing is the Dolby Vision Gaming mode. In this setting, the latency can reach up to 30 ms. This is not a particularly impressive result, and more demanding players may turn up their noses, but in practice – during casual sessions – the difference will not be greatly noticeable. The standard HDR10 and SDR modes perform much better, however. In the case of a 120 Hz signal, the input lag drops to a minimal 5 ms, which is an outstanding result and places the OLED770 among the top TVs suitable for dynamic gaming. In other words, if someone isn’t set on Dolby Vision on Xbox, the gaming experience will be fast, smooth, and free of unnecessary delays!

Compatibility with PC

7.6/10

7.6/10

Chroma 444 (maximum resolution and refresh rate)
Yes
Yes
Font clarity
Good
Good
Readability of dark text and shapes
Very Good
Very Good
Input lag in PC mode (4K, maximum refresh rate)
5ms
5ms
Matrix subpixel arrangement
RWBG
RWBG
Max refresh rate
120Hz
120Hz
G-Sync
Yes
Yes
Review LG 55 B4 Compatibility with PC
Review Philips OLED770 Compatibility with PC

LG B4 paired with a PC performs excellently due to its very low latency of just 13.5 ms, which is virtually instant response between the mouse, the eye, and the screen. A crucial aspect of working on a display is readability, which in the case of the tested television is very good. However, it's worth noting that to achieve sharp fonts, you need to enable the passthrough option in the settings.

The RWBG pixel layout does not significantly affect the display of fonts or letters, which is a notable advantage over Samsung's QD-OLED matrices. Users of both Windows and macOS equipped computers will certainly be pleased with the performance on the tested television screen.

Philips has learned from previous models and has finally improved the implementation of chroma 4:4:4. This is important news for those planning to connect the TV to a computer, as it means no problems with sharpness and readability of fonts. Text looks clear and crisp, so the OLED770 can easily be called an excellent display for office work or browsing the internet. Of course, very demanding users may notice some imperfections resulting from the WRGB pixel arrangement typical of WOLED panels, but in practice, this does not significantly impact comfort. The TV also performs well in games launched from a PC. The panel allows for real refresh rates of up to 120 Hz, and with low input lag, this provides a very smooth image without noticeable stutters. The only thing missing is support for G-Sync and – as we mentioned before – a proper 144 Hz mode, but despite that, the overall performance is really solid. For those looking for a versatile screen for computer and console use, the OLED770 is a choice that’s hard to underestimate.

Viewing angles

7.4/10

7.7/10

Brightness drop at an angle of 45 degrees
29%
28%

The undeniable advantage of OLED panels is their efficiency in group viewing, meaning from different angles. LG B4 maintains very good contrast, colour saturation, and fidelity. While it may not match organic TVs supported by MLA technology, it cannot be said that anyone who purchases the device has been dissatisfied with the results. However, it should be noted that at sharp angles, a slight greenish tint can be observed. This is a characteristic feature of WRGB panels from LG, without the aforementioned micro-lens technology, and unfortunately, there is nothing that can be done about it.

In terms of viewing angles, the Philips OLED770 presents a very high level typical of OLEDs. The image remains readable and saturated even when viewing the screen from the side – there is practically no drop in contrast or fading of colours. In this category, it only falls short of QD-OLED panels, which we find either in very expensive premium models or in one exceptional case – in the 55-inch Samsung S85F. However, in everyday use, the differences are difficult to detect, and the OLED770 performs nearly perfectly. Only at really extreme angles can a slight degradation of colours be noticed.

TV efficiency during daytime

5.7/10

4.8/10

Matrix coating
Satin
Glare
Reflection suppression
Decent
Decent
Black levels during daytime
Very Good
Very Good
Review LG 55 B4 TV efficiency during daytime
Review Philips OLED770 TV efficiency during daytime
Review LG 55 B4 TV efficiency during daytime
Review Philips OLED770 TV efficiency during daytime

Matrix brightness

Average luminance SDR

Philips OLED770: 249 cd/m2

LG 55 B4: 374 cd/m2

The maximum brightness of the TV in SDR materials is 370 nits. For an OLED TV, this is a very good result, allowing for quite comfortable viewing during the day. There are two things worth noting. The first is the rather average handling of reflections caused by the satin finish of the panel, which means that direct light hitting the TV can be quite intrusive. The second issue is the screen brightness at 100% white fill, hovering around 260 nits, which is an outstanding result, as until recently, OLED TVs in this range could "boast" a brightness two times lower. This means that conditions for watching, for example, winter sports, will be very good.

OLED770 is not one of the brightest TVs, so it's hard to recommend it for very sun-filled living rooms. In a bright room, its limitations quickly become apparent – the screen catches reflections and behaves more like a lightly dimmed mirror. Glare reduction is average, and in direct light, the screen performs poorly. Fortunately, the panel's coating does not distort colours, so even during the day, the hues remain natural, and the blacks do not dramatically lose their depth. Nevertheless, it’s hard to say that the OLED770 is a TV designed for bright spaces – it will definitely find a better home in a dimly lit living room or in a bedroom, where its strengths can truly shine.

Details about the matrix

Backlight Type
Software version during testing
03.11.10
TPN258E_VO58.002.179.041
Image processor

Subpixel Structure:

Panel uniformity and thermal imaging:

Review LG 55 B4 TV details about the matrix
Review Philips OLED770 TV details about the matrix

LG 55 B4

Philips OLED770

TV features

8.9/10

5.5/10

  • HDMI inputs
    0 x HDMI 2.0, 4 x HDMI 2.1 48Gbps
    0 x HDMI 2.0, 4 x HDMI 2.1 48Gbps
  • Outputs
    Toslink (Optical audio), eARC (HDMI), ARC (HDMI)
    Toslink (Optical audio), eARC (HDMI), ARC (HDMI), Mini-Jack (Headphones)
  • Network Interfaces
    Wi-Fi 2.4GHz, Wi-Fi 5GHz, Ethernet (LAN) 100Mbps
    Wi-Fi 2.4GHz, Wi-Fi 5GHz, Ethernet (LAN) 100Mbps
  • TV reception
    DVB-T, DVB-T2, DVB-S, DVB-S2, DVB-C
    DVB-T, DVB-T2, DVB-S, DVB-S2, DVB-C

Classic features:

  • Recording to USB (terrestrial TV)
    Yes
    No
  • Recording programming
    Yes
    No
  • Picture in Picture (PiP)
    No
    No
  • RF remote control (no need to aim at the screen)
    Yes
    No
  • Backlit remote control
    No
    Yes
  • Teletext
    Yes
    Yes
  • Audio only mode
    Yes
    Yes
  • Bluetooth headphones support
    Yes
    Yes
  • Simultaneous Bluetooth headphones & TV audio
    Yes
    No

Smart features:

  • AirPlay
    Yes
    Yes
  • Screen mirroring (Windows Miracast)
    Yes
    No
  • Voice search
    Yes
    Yes
  • Voice search in native language
    Yes
    No
  • Ability to connect a keyboard and mouse
    Yes
    Yes
Review LG 55 B4 TV features
Review LG 55 B4 TV features
Review LG 55 B4 TV features
Review LG 55 B4 TV features
Review Philips OLED770 TV features
Review Philips OLED770 TV features
Review Philips OLED770 TV features
Review Philips OLED770 TV features
Review Philips OLED770 TV features
Review Philips OLED770 TV features
Review Philips OLED770 TV features
Review Philips OLED770 TV features

LG B4 uses the well-known proprietary WebOS system that has been around for many years. The system itself offers virtually all the most important applications, and those that are missing can be counted on one hand, such as CDA or KODI.

WebOS also features a highly valued ability to perform operations using a cursor that appears when the remote is in motion. The convenience of such a function is invaluable when entering queries or passwords for portals. WebOS, like most systems, also supports features such as screen mirroring, AirPlay, voice search in Polish, and the ability to connect headphones via Bluetooth. More down-to-earth things, WebOS allows us to use headphones and the TV's speakers simultaneously, which will surely be a great assistance for people with hearing disabilities. Among the more interesting features that will primarily appeal to sports fans, there is the option to turn on an alert informing about an upcoming match, ensuring that we never miss a broadcast. The home panel also deserves praise, allowing control of all smart devices connected to the home network. For example, the end of a washing cycle will be signalled by a notification in the top right corner.

In summary, the WebOS system, although less known and having certain limitations compared to Android TV, offers stable and fast operation and supports most features that users might need. It is a solid solution for those looking for a simple and effective operating system in a television.

Functional Features

Let's start with the basics, which are the classic functions of a television. The Philips OLED770 doesn’t turn the table here; we have a standard EPG interface, the ability to connect devices via Bluetooth, and a few simple configuration options including teletext. Interestingly, there is a jack connection, which is becoming quite rare these days. However, those with older receivers or wired headphones will appreciate it. The remote creates a good impression – it’s ergonomic and has a backlit numeric keypad – but there’s also a sense of a step back here. It works via infrared, so you have to aim it at the television, and frankly, by 2025 we would expect full wireless support. The exception is voice commands, which use Bluetooth, but even here there’s no reason for euphoria.

SmartTV Features – TitanOS

Speaking of voice, let’s move on to the Smart TV system, which is an element that largely defines the daily comfort of using a television today. And here the OLED770 clearly lags behind the competition. TitanOS operates quickly enough that it's not a disaster, but daily use can be frustrating due to minor bugs and shortcomings. Theoretically, we get support for AirPlay, but on the other hand, screen mirroring just didn’t work at all in practice. Voice search? Yes, but only through Amazon Alexa and without support for the Polish language. In other words, the features are there, but when we try to use them, we find that their practicality is severely limited and nearly useless. And it’s this Smart TV aspect that becomes the greatest hindrance of the OLED770. The image can be astonishing, gaming is excellent, and Ambilight creates a unique atmosphere – but when we transition to daily use of apps and services, we feel a sense of dissatisfaction.

Ambilight – Philips OLED770

Although in terms of smart functionality, the Philips OLED770 is rather average, it has something in store that its competitors honestly envy. We’re talking about the three-sided Ambilight system, which has been a hallmark of this brand’s televisions for years. The LED lights positioned at the back of the housing dynamically illuminate the wall in colours matched to whatever is happening on the screen at that moment. The effect is simple but very suggestive – the image seems to extend beyond the boundaries of the television, giving us the impression that the screen has suddenly grown by extra inches. During a movie screening, it can create atmosphere, in games it enhances immersion, and during regular TV viewing, it simply pleases the eye. It’s this addition that makes it so that despite the limitations of TitanOS, the OLED770 has something that can attract attention and give it character.

Playing files from USB

8.5/10

8.5/10

Supported photo formats:

JPEG
Yes
Yes
HEIC
No
No
PNG
Yes
Yes
GIF
No
Yes
WebP
No
No
TIFF
No
No
BMP
No
Yes
SVG
No
No

Maximum photo resolution:

4 Mpix
Yes
Yes
6 Mpix
Yes
Yes
8 Mpix
Yes
Yes
10 Mpix
Yes
No
12 Mpix
Yes
No
16 Mpix
Yes
Yes
20 Mpix
No
No
24 Mpix
No
No
28 Mpix
No
No
32 Mpix
Yes
Yes

The default file player in LG B4 definitely handles most photos quite well, although it's surprising that some equally popular ones are missing. We can successfully play videos recorded in practically all the most popular formats, including Dolby Vision. The only codec that LG B4 won’t play is H.266 VVC, although this is currently rather unused. However, it’s worth noting the supported photo formats, which are just two: JPEG and PNG. Apple phone users may feel disappointed by the lack of support for the HEIC format, which is the default format when taking photos. The remedy for this is to use the built-in AirPlay feature. We should also mention the lack of TXT subtitle support.

The built-in media player in the Philips OLED770 works quite well, especially when it comes to subtitles – virtually every format we threw at it was handled correctly, which will certainly please those watching films from their own library. However, there are certain reservations regarding photo support. Not all resolutions are recognised, which may surprise users accustomed to viewing photographs from traditional cameras or older memory cards. Apart from that, everything works correctly – it’s just worth ensuring that the TV can handle the files that we actually want to play on it.

Apps

9.1/10

6.7/10

OK
Disney_Plus
OK
Amazon_Prime_Video
OK
Player_TVN
OK
Polsat_Box_Go
OK
Canal_Plus_Online
OK
TVP_VOD
OK
Apple_TV_Plus
OK
SkyShowtime
OK
Rakuten
OK
CDA_Premium_Browser
OK
Spotify
OK
Tidal
OK
Netflix
OK
YouTube
OK
HBO_MAX
No
Kodi
OK
Apple_music
No
Eleven_sports
OK
Xbox Game Pass
OK
GeForce Now!
OK
Amazon Luna
OK
Boosteroid
No
Steam Link
OK
Disney_Plus
OK
Amazon_Prime_Video
No
Player_TVN
OK
Polsat_Box_Go
OK
Canal_Plus_Online
OK
TVP_VOD
No
Apple_TV_Plus
No
SkyShowtime
OK
Rakuten
OK
CDA_Premium_Browser
No
Spotify
No
Tidal
OK
Netflix
OK
YouTube
OK
HBO_MAX
No
Kodi
No
Apple_music
No
Eleven_sports
No
Xbox Game Pass
No
GeForce Now!
No
Amazon Luna
OK
Boosteroid
No
Steam Link

Sound

7.1/10

7/10

  • Maximum volume
    -
    80dB
  • Dolby Digital Plus 7.1
    Yes
    Yes
  • Dolby True HD 7.1
    Yes
    Yes
  • Dolby Atmos in Dolby Digital Plus (JOC)
    Yes
    Yes
  • Dolby Atmos in Dolby True HD
    Yes
    Yes
  • DTS:X in DTS-HD MA
    Yes
    Yes
  • DTS-HD Master Audio
    Yes
    Yes

The audio system built into the LG OLED B4 can be considered quite decent. We can say that it holds up fairly well in its price range. The bass is quite noticeable, but it doesn't overpower the other frequencies. It can be said that the sound is reasonably well balanced. We believe that those opting for this class of display are, or will be, in possession of an appropriate audio system. Therefore, the presence of DTS-HD Master Audio and Dolby Atmos codecs is not insignificant.

When it comes to sound, the Philips OLED770 performs quite well, although you can't expect powerful bass. For regular TV viewing, streaming services or series, its capabilities are more than sufficient – dialogues are clear, and the overall tonal balance is at a decent level. However, when we want to feel a real punch in cinematic productions or games, it quickly becomes apparent that it lacks solid low-end response. In such a situation, a natural complement becomes an additional soundbar or audio system that will allow you to take advantage of the potential of the excellent picture.

On the plus side, versatility in handling formats must be noted. The OLED770 can manage practically all popular codecs, including Dolby Atmos, DTS:X, and Dolby TrueHD. Because of this, when connecting external audio equipment, you can expect a full sound experience, even if the built-in speakers in the TV don't make a spectacular impression.

Acoustic Measurements

No acoustic data

80dBC (Max)

75dBC