XIAOMI S Mini 2026 (55"-75") 60Hz vs Hisense U7S / U77SE

When it comes to HDR, the capabilities of the Xiaomi S Mini 2026 are really good, especially given the segment this model belongs to. The TV reaches around 1,000 nits of brightness without much trouble, allowing it to show a very pronounced HDR effect in bright scenes. The sun, reflections and brightly lit parts of the image can be really intense and at times almost striking in their brightness. It is a bit different in dark scenes, though. Very small light sources surrounded by black are displayed at much lower brightness, so they lack that pinpoint intensity seen on the best TVs. That said, this is not unusual for a Mini LED. The local dimming algorithm reduces the backlight to preserve the deepest possible blacks, which in such scenes matter more than a few extra nits.

HDR colours

Colour reproduction also performs well. Xiaomi markets the S Mini 2026 as a QLED TV, although the solution used here is effectively based on a PFS phosphor. The result is what matters, and it's quite good. Our measured coverage of the DCI-P3 gamut was about 94%, while in the much wider BT.2020 colour space it was about 74%. This means the TV can reproduce most colours used in HDR films with suitably high saturation. Its limitations are most visible with very intense shades of green, where the colour gamut starts to run out.

The Hisense U7S has considerable potential for HDR display, but it cannot exploit that potential in every scene. On a test pattern it reaches around 1,100 nits, so the backlight itself is very strong. In our brighter film scenes we measured about 640 to 745 nits. That is still plenty for the sun or bright highlights to have a clear bloom and to show an advantage over SDR material. When the TV needs to brighten a larger portion of the image, it handles it fairly well.

The problem appears with small highlights on a dark background. Each of the 192 zones covers an area much larger than a tiny point on the screen. If the TV were to light that whole zone strongly, it would also brighten the area around the highlight. Hisense tries to avoid that and dims the entire zone. This makes blacks look better, but a small bright object that should attract the eye also loses intensity. That is why in two more demanding scenes we recorded only 297 and 154 nits. The difference is large: in one shot HDR can impress, and in the next small highlights are noticeably muted. The U7S therefore prioritises preserving deep blacks, even at the expense of bright details. With that number of zones it is an understandable compromise, but worth bearing in mind — the peak 1,100 nits tells us about the backlight’s capability, not how brightly the TV will show every element of a film.

Colours

Hisense describes the U7S as ULED, but that is a marketing name, and it is a PFS phosphor backlight that expands the colour palette here. In our measurements the TV covered about 91% of the DCI-P3 colour space and 71% of BT.2020. Those are good results, though they fall short of the best screens on the market. The largest shortfall is in green — the TV does not even reach the DCI-P3 boundary here, so the most intense shades will be less saturated than they should be. Most colours in HDR films and series still look suitably vibrant. A positive is the repeatability of the results. Gamut coverage on test patterns and in film scenes is practically identical.

We tested the Xiaomi S Mini 2026 in sizes from 55 to 75 inches in Film mode, which offered the most accurate colours compared with the other presets. That did not mean the picture was correctly set up straight away. In our sample the white balance was clearly shifted towards warmer tones. There was too little blue and too much red, so whites and greys had a slightly warm tint. The TV also tended to brighten darker parts of the image too much. This was due to the gamma, which instead of staying around 2.4 dropped in places to about 2.0. As a result there was more detail visible in the shadows, but the image lost some depth. The factory settings were therefore not bad, but there was still some way to go to achieve accurate image reproduction.

Out-of-the-box colours on the Hisense U7S are decent, but there are a few areas to improve. In SDR there is a red bias in the white balance, which makes the picture too warm and, in places, slightly pink. You can notice this on faces and on bright, neutral surfaces. The gamma also runs below the target, so the TV brightens the image, particularly in darker areas. That makes shadow detail easier to see, but the scene loses some of its depth.

In HDR the white balance is somewhat more even, but not entirely neutral, with a shortage of blue in the mid-tones and a lack of red in the brightest parts. A bigger issue is how brightness is rendered. The EOTF curve shows a large portion of the mid-tones being lifted, causing the picture to look brighter than the source intends. Color Checker measurements are also weaker than in SDR: many errors are around 3 to 4, and some reach as high as 8. Colours can therefore look attractive, but they are not always faithful to what we should see. There is room for improvement here and we will see how much can be corrected through calibration.

Contrary to appearances, the Xiaomi S Mini 2026 responds quite well to calibration. After our adjustments the white balance was noticeably improved and the picture stopped leaning towards overly warm tones. With SDR material the effect is really good, and the TV can render such content very accurately; it is hard to fault it on colour reproduction. We applied similar corrections for HDR, though not everything could be fixed there. Colours look better than on the factory settings, but the TV still tends to display the image a little brighter than it should. This is visible in the EOTF curve, which sits above the reference value. In practice this means some HDR scenes are brighter than the creators intended. It is a quirk of this TV and we have no influence over it.

Calibration of the Hisense U7S brought the biggest improvements with SDR material. We managed to even out the white balance, so the previous warm tint has gone and whites and greys now look neutral. Gamma is also now very close to the reference, and the TV no longer brightens the picture unnecessarily, so darker scenes have regained depth. Color Checker measurements confirm the improvement: most errors are below 2. That means the picture is very well set up for watching regular TV and SDR films. It wasn't as smooth in HDR. There is no effective way to correct the EOTF curve, so the TV still interprets a film's brightness somewhat on its own. It brightens parts of the picture and can dim the brightest elements depending on the scene and the behaviour of the local dimming. Calibration could not eliminate this. This is also reflected in the Color Checker results, where many errors remain around 3–4 and a few exceed 7. So the result in SDR is really very good, but in HDR we must accept that the TV adds its own interpretation of brightness to the image.

Digital image processing in the Xiaomi S Mini 2026 is handled by the MT5896 processor. Unfortunately, in this respect the TV is rather mediocre. Low-resolution content is not scaled very well, and its limitations quickly become apparent on a large screen. The picture looks quite digital, and the TV cannot bring out many extra details. Additionally, overscan cannot be turned off for low-resolution content. The situation is even worse when it comes to smoothing posterisation. On the smaller models there is not even a dedicated setting to reduce visible banding between similar shades. So if such imperfections are already present in the source material, Xiaomi essentially does not mask them.

The handling of lower-quality material is fairly mediocre on the Hisense U7S. The Pentonic 700 chipset used here does not cope particularly well with strong compression artefacts. The menu includes a "Smooth and Gradient Image" function, but its performance leaves much to be desired. At the low setting tonal transitions show little improvement, although at least the image does not suffer. The medium and high settings still do not remove obvious banding between shades, and they begin to blur details; in our test material even parts of characters' faces disappeared. Interestingly, film grain remains untouched at every level. If you do use this feature, stick to the low setting. Its current behaviour needs refinement, but that is mainly down to the chipset used here.

Upscaling to 4K performs much better. Lower-resolution content gains in legibility, edges are well reproduced, and fine elements look sharp. That does not mean it recovers details that were never in the recording, but the TV makes good use of what it receives from the source. Another plus is that it does not crop the image edges, even with an SD signal.

The smaller variants of the Xiaomi S Mini 2026 use a 60 Hz panel, and that is their biggest limitation when it comes to motion. For films and series this is not yet a major issue, because the TV has a classic motion interpolation for 24/30 fps material. So we can reduce the characteristic judder and adjust the motion settings to our own preferences. Sports and other 50/60 Hz content fare worse, because there is no additional function to improve smoothness. In such material we are therefore limited by the panel's capabilities.

In terms of motion blur the TV performs quite typically for a VA panel. Most trailing is visible behind objects moving on a dark background, while in brighter scenes the effect is noticeably reduced. It is not at a level that completely ruins the perception of motion, but in dynamic scenes you can tell the panel is not among the fastest.

Motion handling on the Hisense U7S is decent thanks to the 144 Hz refresh rate. For films there is also a motion smoother with adjustable judder and blur reduction. You can therefore keep a more cinematic motion or increase smoothness if jerky camera pans bother you. The high refresh rate is also useful for sports and gaming, but unfortunately it does not solve the panel's biggest problem.

That problem is pixel response time. Fast-moving objects leave long, clearly visible trails, as our UFO test shows. It looks worst on dark backgrounds, where the trail behind the object is particularly pronounced. So motion can be smooth, but the moving object itself loses sharpness, and that difference on the U7S is fairly easy to notice.

In larger sizes the Xiaomi S Mini 2026 is a much more interesting proposition for gamers. The panel natively runs at up to 144 Hz, so when connected to a PC you can use the high refresh rate even in 4K. At lower resolutions the TV can go even further, reaching up to 288 Hz. It also supports ALLM, automatic switching to game mode, and a Game Bar with the most important settings to hand. Of course, the TV has two full-bandwidth HDMI 2.1 ports. In terms of smoothness the difference compared with the 55 to 75-inch versions is therefore significant and especially noticeable with a PC or console. Not everything works perfectly, though. As with the smaller variants, we have reservations about the implementation of HGiG. The HDR setup screens on the PS5 and Xbox do not accurately match the TV's real capabilities, so if you set your console according to those prompts the brightest parts of the image can be blown out and lose some detail.

The Hisense U7S has a lot to offer gamers. You get two HDMI 2.1 ports and support for 120 Hz at Full HD, 1440p, and 4K, so modern consoles’ capabilities are well used. When connected to a PC you can use 144 Hz at 4K or switch the resolution to Full HD and run 240 Hz. So there’s a wide choice, although it’s worth remembering the motion smearing mentioned earlier, which the high refresh rate does not eliminate. VRR and ALLM are also present. The first helps prevent tearing when frame rates in a game change. The second automatically switches the TV into game mode, so you don’t have to dig through the menu each time. VRR works from 48 to 240 Hz, with the highest refresh rate available in Full HD. Xbox users can also play in Dolby Vision, including at 120 Hz. Importantly, this format does not introduce significant input lag here. The Game Bar also looks very good. It’s easy to read, visually appealing, and lets you quickly check what signal the TV is receiving. There are also handy gaming settings at your fingertips, including shadow brightening. If it’s hard to spot an opponent in a dark game, you can improve visibility without digging through the entire menu.

Our biggest complaints concern HGiG. Hisense continues to do its own tone mapping, which makes setting HDR on the console confusing. You adjust a checkerboard test pattern and the TV continuously adapts how it looks. As a result, the moment the pattern disappears does not correctly indicate the screen’s brightness limit, and it’s easy to set the value too high. For this model it’s better to set the target HDR peak brightness on the console to about 900 to 1000 nits, rather than relying on the configurator.