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    55SM9000PUA
    A 55-inch LCD (LED) 4K UHD TV from LG, with 2160p resolution, and a claimed 240-hertz refresh rate (may not be true native frame rate), four HDMI inputs, no component-video inputs, and three USB ports. This TV is internet enabled.
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    * This Model May Have Limited Distribution

    Description
    A 55-inch LCD (LED) 4K UHD TV from LG, with 2160p resolution, and a claimed 240-hertz refresh rate (may not be true native frame rate), four HDMI inputs, no component-video inputs, and three USB ports. This TV is internet enabled.

    CR Expert Take

    How did it perform in our owner surveys and expert lab testing?

    What goes into the Overall Score?

    Ratings Scorecard

    OWNER SURVEYS

    Predicted Reliability
     /  5
    Owner Satisfaction
     /  5

    EXPERT LAB TESTS

    HD picture quality
     /  5
    UHD picture quality
     /  5
    HDR
     /  5
    Viewing angle
     /  5
    Motion blur
     /  5
    Sound quality
     /  5
    Versatility
     /  5
    Data privacy
     /  5
    Data security
     /  5
    Ultra HD Picture Quality
     /  5
    Ultra HD performance
     /  5
    Color
     /  5
    Screen size (in.)
     /  5
    TV resolution type
     /  5
    Display type (Backlight)
     /  5
    Internet-enabled
     /  5
    Energy cost/yr. ($)
     /  5

    Detailed Test Results

    HD PICTURE QUALITY. HD picture quality is excellent. Reproduction of fine HD image detail is excellent. Color accuracy is very good, with flesh tones in particular, looking natural. Contrast--the difference between the darkest blacks and brightest whites--is good, so images have depth and dimension. Black levels are very good, with help from LG's full array "LED Local Dimming" feature, delivering fairly deep blacks that help contrast in darker scenes. However, halos around objects (a side effect of local dimming) are visible, which can be distracting on some darker content. This is among the brightest models we've tested (with the backlight control turned up), so the picture is well suited for a very sunny room. A lower backlight setting is recommended for a dimmer viewing environment. In scenes with subtly shaded light-to-dark areas, such as a sky during sunset, the model does a very good job producing a smooth transition without distinct, coarse bands. There is slight display non-uniformity that creates brighter cloudy areas most noticeable on very dark scenes (or in the black bars of a letterboxed movie). We routinely see this issue with LCDs and severity can vary from model to model. The deinterlacing and film mode operations are excellent on HD content; there is little or no trace of jaggies on the edges of objects for video and film-based 1080i video content, such as from cable.

    UHD PICTURE QUALITY. 4K UHD picture quality is excellent and HD-to-UHD upconversion falls short. All native 4K content (non HDR) we played on this model, including movies and test videos, is presented in full 4K detail with excellent fidelity when played back via the TV's HDMI input. Via the USB port, high-resolution photos are displayed in full 4K detail. With regular HD content, the TV's HD-to-UHD up-conversion processing falls short, revealing some visible jaggies along the edges of diagonals when playing HD content.

    HIGH DYNAMIC RANGE (HDR) PERFORMANCE. HDR performance is generally effective, but short of the best we've seen. The display has decent peak brightness capability (by HDR standards) showing slight contrast improvement over basic 4K performance on content mastered with HDR. The contrast between moderately bright and very bright highlights within a scene is excellent, while the brightness levels in the mid-to-lower tones, like those in an indoor scene, are somewhat limited. Uneven black level brightening effects due to local dimming are apparent in some dark scenes, reducing contrast. It does a good job reproducing a greater range of nuanced shadow detail from black to white, with no obvious banding on areas of the image that have subtle shade variations. There is no visible loss of near-white shadow detail in the brightest areas. Brighter colored objects remain nicely saturated.

    VIEWING ANGLE. This LG has a wide viewing angle overall, better than that of most TVs. It will provide the same picture quality, with fewer problems than most TVs, for typical viewing conditions -- say, if your family is seated across a long sectional or in chairs off to the sides. The picture does show some dimming from the sides but not to any point we find distracting. With dark scenes this model doesn't fare quite as well. When viewed from the sides, the depth of black levels vary depending on the vertical position of the viewer's head. As we moved closer to the screen this limitation became even more apparent, especially if seated on the floor looking upward where black levels brighten significantly.

    MOTION BLUR. This LG TV has very good motion performance, with minimal blurring on our motion tests thanks to LG's "TruMotion." This feature is designed to reduce motion blur, a shortcoming of most displays. Although this TV includes a "Motion Pro" setting that is effective at further reducing motion blur it limited the brightness of the image and also added some flicker to the picture, so we left the feature off.

    SOUND QUALITY. This model has very good sound quality, better than most models we've tested. Whether you're watching a blockbuster movie, a concert, or TV show, it is able to deliver a satisfying listening experience. Bass is deep, providing satisfying fullness to the sound but a bit lacking in clarity, and treble is nicely detailed, while the overall sound is closed in. The speakers can play at a fairly loud volume level and without obvious distortion. Also, at higher volume, dynamic compression keeps the sound from distorting but also limits the clarity of peaks in loudness, which can be a bit distracting on some audio content. Unlike most of our tested models its sound should satisfy the more discerning listeners, so give this a listen before opting for an external sound bar.

    EASE OF USE. On first power up there is an on-screen guide that helps you through setting up the TV. LG’s Blue-tooth remote allows you to navigate on-screen menus using either a traditional button key pad or a gesture-controlled on screen cursor. Using a point-and-click operation, the cursor’s movement is linked to the motion of your hand and is used to make selections. It includes a built-in microphone to access the voice assistant feature. It also provides convenient direct button access to streaming services including Netflix and Amazon Prime Video. Consider the TV's stand is 34 inches wide when choosing a table top to place it on.

    INTERNET FEATURES. This Smart TV provides Internet functionality via its "WebOS" portal with access to a library of applications, and a full Web browser. Movie streaming services that can be downloaded to this TV, or are built-in, include Netflix, YouTube, Amazon Prime Video and Hulu. Includes built-in Google Assistant, a virtual assistant, which allows you to use natural speech to ask questions, launch applications, and search programming via the remote's built-in microphone. Support for external voice assistants (not built in to the TV) include: Amazon Alexa, Google Assistant.

    CONNECTIONS. This model has four HDMI inputs-- one supports ARC (Audio Return Channel), one composite input, and no component input. It also has three USB ports, an optical digital audio out, an Ethernet port, WiFi wireless networking; DLNA, to access files within your home network; Casting, which allows you to send streaming content from your mobile device to the TV via your home network; Screen mirroring, where the image on your smartphone or other compatible device can also appear on the TV. Analog connections are made via a special breakout cable adapter (included) that attaches to the TV as a single plug.

    INCLUDED IN THE BOX. A printed user manual. A quick start guide. An electronic user guide via the TV's menu. A remote control with batteries. Breakout cable adapters (one composite with stereo audio.). A detachable power cord.

    About

    The LG 55SM9000PUA is a 55-inch LCD (LED) 4K UHD TV with a native resolution of 3840x2160 (2160p). It has full-array LED backlighting. Rather than the basic 60Hz, it claims a faster 240Hz frame rate, a feature designed to reduce motion blur.

    It includes an Ethernet jack allowing for a wired connection to your home network. It is also WiFi capable, so you can connect it to your home network wirelessly. It is DLNA certified, so you can view digital photos stored on a compatible computer, phone, or other mobile device also connected to your home network.

    This TV has four HDMI inputs, and no component-video inputs. It also has three USB ports, which may be used to play media--photos, videos, and music--stored on a flash drive.

    The LG 55SM9000PUA measures 30.7 inches high by 48.5 inches wide by 10.4 inches deep, including its base. The panel itself is 2.5 inches thick including any protrusions.

    The warranty on this model covers parts for 12 months and labor for 12 months.

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