TCL 4 Series/S435 2020  TV Review

The TCL 4 Series is a basic TV with a simple, no-frills design. It looks a lot like the TCL 4 Series 2019 with a different pattern on the back. It has wide-set feet, and the overall build feels cheap.

Update 01/13/2021: We remeasured the footprint of the stand because we originally measured it with the feet twisted outwards, creating a larger footprint. However, this isn't another position you can place them on, we had just placed them incorrectly.

The wide-set stand is made of plastic, and the TV wobbles a bit. The position of the feet can't be changed to accommodate smaller tables.

Footprint of the 55 inch TV: 38.7" x 12.2".

Note: There's an 85 inch model whose feet are placed at the left and right edges.

The back of the TCL 4 Series is different than the TCL 4 Series 2019. The back panel is made out of metal that feels a bit cheap, and the part where the inputs are is also made from cheap plastic. Sadly, there's no cable management.

Note: There's an 85 inch model with a different back, somewhat similar to the TCL 6 Series/R635 2020 QLED.

The TCL 55S435 is somewhat thick, but should still look good when wall-mounted.

Note: There's an 85 inch model with a different back, somewhat similar to the TCL 6 Series/R635 2020 QLED, so it may be a bit thicker.

This TV has an okay build quality. The overall build feels cheap, and there's some wobble. The plastic on the back has some flex, and the metal doesn't feel premium.

The TCL 4 Series has a fantastic native contrast ratio. It displays deep blacks, which is expected from a VA panel, but there's no local dimming feature to improve it. Keep in mind that contrast can vary a bit between units.

The SDR peak brightness is poor. It doesn't get bright enough to combat glare in well-lit rooms. Luckily, its brightness is very consistent across different content.

We measured peak brightness after calibration in the 'Movie' Picture Mode. If you don't care about image accuracy and want the brightest image possible, we reached 268 cd/m² in the 2% window in the 'Vivid' Picture Mode.

If you want a budget-friendly TV that gets brighter, check out the Hisense H6510G.

Update 08/02/2021: Added the real content local dimming videos.

It doesn't have a local dimming feature. The video is for reference only, so you can see how backlight on this display performs and compare it to a similar product with local dimming.

Update 08/02/2021: Added the real content local dimming videos.

Once again, there's no local dimming feature. The video is for reference only, so you can see how backlight on this display performs and compare it to a similar product with local dimming.

The TCL 55S435 has bad HDR peak brightness. It doesn't get that much brighter than in SDR, and it's not enough to make highlights pop in HDR. Small highlights are a bit dimmer due to frame dimming. The EOTF follows the target curve somewhat well until the roll-off, but most scenes are a bit too dark.

We tested HDR peak brightness in the 'Dark HDR' Picture Mode with TV Brightness set to 'Brighter'. If you find it too dim, set Gamma to '1.8' in the mobile app because this results in a bit brighter scenes as seen in this EOTF, but the peak brightness is about the same.

The HDR brightness in Game Mode is once again disappointing. It looks the same as outside of Game Mode because you don't need to change the Picture Mode to enter Game Mode. It's not enough to make highlights pop the way the creator intended.

Our unit of the TCL 4 Series has okay gray uniformity, but this may vary between units. The edges of the screen are noticeably darker, and there's dirty screen effect (DSE) in the center, which could be distracting during sports. There's less DSE in near-dark scenes, but there's visible backlight bleed along the edges.

This TV has alright black uniformity, but this may vary between units. There's a bit of blooming around the center cross, and sadly, there's noticeable backlight bleed along the edges. This can be distracting in dark scenes, and there's no local dimming feature to improve it.

The TCL 55S435 has narrow viewing angles, which is expected from a VA panel. You quickly lose image accuracy as you start to move off-center. If you want a budget-friendly TV with wide viewing angles, look into the Hisense A6G.

The TCL 4 Series has decent reflection handling. It handles a moderate amount of light well but struggles if you place it in a room with a ton of glare.

This TV has excellent out-of-the-box color accuracy, but this may vary between units. There are hardly any inaccuracies with most colors and white balance, but some blues are a bit off. Gamma follows the target curve fairly well, but most scenes are too dark. Lastly, the color temperature is a bit warm, giving the image a red/yellow tint.

The accuracy post-calibration is simply incredible. Any remaining color inaccuracies are fixed except for red, and the color temperature is nearly spot on with our 6500K target. Gamma isn't perfect, as some scenes are slightly over-brightened, but this shouldn't be very noticeable.

You can see our recommended settings here.

The TCL 4 Series displays 480p content, like from DVDs, well. However, it has some trouble properly scaling 4:3 content, so the photo is taken in PC mode, resulting in over-saturated colors compared to other photos.

720p content, like from a cable box, is upscaled well without any obvious artifacts.

1080p content, like Blu-rays or game consoles, looks almost as good as native 4k content.

Update 12/15/2020: We retested the 4k input to see if there's any spatial dithering because there's some crosshatching in the shadows. We tested other pictures and didn't notice any spatial dithering.

There aren't any artifacts with native 4k content as this TV displays it perfectly. It looks more like the TCL 5 Series/S535 2020 QLED than the TCL 4 Series 2019.

This is a 4k TV that doesn't display an 8k input.

Some of the blue pixels appear dimmer, but this doesn't result in any picture quality issues. This TV uses a BGR subpixel layout, which can affect the way text is rendered when using the TV as a PC monitor. You can read about it here.

The TCL 55S435 has an okay color gamut for HDR content, but it's not considered a wide color gamut. Even though it has good coverage of the commonly-used DCI P3 color space, its coverage of the wider Rec. 2020 is limited.

The TCL 55S435 has a disappointing color gamut. It's mainly limited by its lack of wide color gamut and low peak brightness, as it can't display colors at a wide range of luminance levels.

The gradient handling is impressive, but it's not as good as the TCL 4 Series/S434 Android 2020. Most of the banding is visible in the darker shades, especially in the grays and greens. There's a Noise Reduction setting available in the Roku mobile app, but it doesn't improve the gradients at all.

There aren't any signs of image retention, but this may vary between units.

We don't expect VA panels to experience permanent image retention, as the VA panel in our long-term test appears immune.

This TV has a mediocre response time. Motion looks blurry because the response time is slow in most transitions, especially with dark transitions, which causes black smearing. This can be noticeable in games or movies with fast-moving content in dark scenes.

The TCL 55S435 uses pulse width modulation (PWM) to dim its backlight at any level below '18', and the 120Hz flicker may result in some image duplication. The backlight is flicker-free above that level.

There's no optional black frame insertion feature. The TV flickers at 120Hz if you set the Backlight to '18' or below.

This TV doesn't have a motion interpolation feature.

Due to the slow response time, lower-frame rate content doesn't appear to stutter.

This TV automatically removes 24p judder from native apps or Blu-ray players.

It doesn't support any variable refresh rate technology.

This TV has low input lag, but it's not as low as some other 4k TVs, especially if you're playing 1080p games or if you need the TV to display chroma 4:4:4, like if you're using it as a PC monitor. You likely won't notice much of a delay in those situations, but it can affect your gaming performance with reaction-based games. It's best to play 4k games at 60fps with chroma 4:2:0, as you won't notice any delay.

Note: We couldn't measure the 1440p @ 60Hz input lag because it can't display a custom 1440p resolution from a PC, but it does from an Xbox.

This TV supports common resolutions up to 60Hz. It accepts a 1440p @ 60Hz signal from an Xbox, but it displays a green screen and has issues when forcing that signal through a PC. It properly displays chroma 4:4:4 with either 1080p or 4k content, and you don't need to change any settings for it to work as it automatically displays it when connected to a PC.

Since it's limited to a 60Hz panel and has HDMI 2.0, it can't take advantage of the full capabilities of either the Xbox Series X or PS5. It has an Auto Low Latency Mode, and there aren't settings for it; it switches the TV into Game Mode when a game from a compatible device is launched for low input lag.

The Composite In input needs an adapter, but it doesn't come with one like the TCL 4 Series/S434 Android 2020.

The frequency response is mediocre. It has a fairly well-balanced sound profile but doesn't produce much bass. It gets loud, and there isn't much compression at its max volume.

This TV has okay distortion performance. There isn't much distortion at moderate listening levels, but it gets a lot more audible at its max volume. However, this depends on the content and not everyone may hear it.

The TCL S435 variant we tested has built-in Roku TV, but the TCL 4 Series/S434 Android 2020 variant has Android TV instead. Note that we tested this TV around the same time as the U.S. elections, and the background was automatically set to an American theme. This is why the background is different than other Roku TVs we've tested in the past, which had red backgrounds, but you can change it in the settings.

The newer version of this TV, the TCL 4 Series/S446 2021, uses Google TV instead of Roku.

There are ads and suggested content on the home page, but we couldn't get a picture. You can opt-out of featured content by selecting Limit Ad Tracking in the 'Advertising' section of the Privacy settings.

The Roku app store has a great selection of apps you can download and they run smoothly for the most part.

This TV comes with the same basic remote as the TCL 3 Series 2020. It doesn't have voice control, and there are some quick-access buttons to popular streaming devices. You can use voice control through the Roku app on your phone, and you can ask it to change inputs, open apps, or search for specific content.

There's a single button underneath the TCL branding at the center of the screen. You can power the TV On/Off and change inputs.

• Remote (with batteries)
• User manual