Redmi 9 review: under € 120 he is the TOP

redmi 9

These past few weeks have been very fruitful at home Xiaomi, especially for the release on the market of the whole series Redmi Note 9. We had the opportunity, therefore, to try these smartphones and, on YouTube, we also brought an interesting comparison. Although these devices, therefore, are offered at very low prices in the various third-party stores, redmi 9 is offered immediately at an excellent price on the official website. We remain well below the threshold of 200 euros and, therefore, could apply as a best buy in the range between 100 and 150 euros. Will he have managed to impress us? Will he have been able to return better performances than Redmi Note 9, which after all had not impressed us much? Let's find out together, within this Full review.

Review Redmi 9


With the Xiaomi packaging, it immediately reveals the product design, also proposing some main technical features. Inside the sales box, therefore, we find:

  • Redmi 9;
  • USB / USB Type-C cable;
  • soft transparent TPU cover;
  • pin for removing the SIM slot;
  • wall-mounted power supply with European socket;
  • warranty certificate;
  • short instruction manual.

Design & Materials

From an aesthetic point of view this redmi 9 it's really a great product. Although the whole body is made of plastic, this gives good feedback to the touch. We find, in fact, a particular texture with concentric circles which, combined with the defined gradient coloring Sunset Purple, gives the device something more. Unlike many other competing products, therefore, it is not particularly slippery and it is easy enough to use it with one hand. Despite this, however, the dimensions are quite generous, measuring 163,32 x 77,01 x 9,1 mm, With a weight of 198 grams. As you can guess, therefore, it is not the smallest product you can find on the market.

redmi 9

Being a low-end device, dedicated to those who need a phone that does not have too many functions, we have a fairly standard equipment. On the right side, therefore, we find the On / off button and the volume balance, while on the opposite side there is the SIM slot, capable of holding well at the same time two nano SIM and a microSD. Superiorly, then, there is the IR sensor and the microphone for the suppression of environmental noise, while at the bottom we have the audio jack from 3,5mm, main microphone, the entrance USB Type-C and system speaker. As mentioned above, on the back we have a gradient coloring, interrupted only by the presence of the photographic sector which shows a central quad-camera assisted by the single flash LED, as well as from the biometric sensor located just below. Compared to the device profile, this module protrudes very little, but we must also consider that we are talking about an overall thickness of 9,1mm, therefore quite generous.

I didn't have too many difficulties in daily use, although the fingerprint sensor could have been positioned slightly lower. Those who do not have particularly large hands, in fact, may have some problems reaching it easily. Despite this, even without a cover, it is a pleasant phone to hold and very slippery. Sorry only that between the body and the front glass there is the usual plastic strip to divide these two parts, a detail that I would have preferred not to see.

Unlocking Systems

As on many other competing products, also in this case we find two main phone unlocking systems: biometric sensor e face unlock.

Taking a look at the first method, then the one related to unlocking with fingerprints, I must say that it has proved quite reactive and precise, although not lightning. However, there is a good reaction time and it is almost impossible to touch the cameras placed above it. It would have been more convenient, however, if it had been positioned sideways, as shown on two Note 9 series smartphones.

I wish I could tell you more about this other method, which uses 2D face recognition via the selfie camera, but I won't. It is not worth, in fact, to set this function on this smartphone, since only in the daytime it is possible to have a rather fast and precise response. In fact, when the light goes down, the first problems come out and it becomes almost impossible to unlock the smartphone. To complete the thesis according to which it is better to exploit the recognition of the fingerprint we also find everything related to safety. We know well, in fact, how this method is absolutely not the safest on the market.


Redmi 9 offers a IPS LCD display da 6,53 " with resolution FHD + (2.340 x 1.080 pixels) with a pixel density of PPI 394, aspect ratio in 19.5: 9, 400 nits of brightness, 89,83% scree-to-body-ratio and Corning Gorilla Glass 3 glass. Not an exceptional technical data sheet in this respect, but enough to be good enough for such a product. In fact, in direct sunlight, the panel is seen quite well but, unfortunately, everything is disturbed by the fingerprints that remain etched on the glass. I would have opted, therefore, for a oleophobic treatment best. Beyond this aspect, however, i colors they are well calibrated, even being a little off and really poor in contrast. This does not mean, however, that within the settings you can also modify this aspect, setting the effect that most closely approximates your needs.

redmi 9

From a certain point of view the brightness sensor he proved too lazy, especially when going from a strong light to total darkness. Despite this, the brightness is always calibrated based on the ambient light, even in a rather precise chromatic level. In case you are looking for more comfort, you could always take advantage of the reading mode 2.0, which tends to completely change the color scale of the panel, showing much warmer colors than normal. No problem, then, with the drop notch present on the upper part of the display, which has a design very similar to that proposed on the devices already two years old.

Typing on the keyboard of this smartphone is not particularly difficult, even if sometimes you run into some errors. During the busiest phases, in fact, the system loses a few touches. We don't find a refresh rate higher than the standard one (60Hz), therefore navigation within the interface is rather normal and not particularly fluid. This, however, certainly helps to keep consumption lower.

Hardware & Performance

Within this paragraph we enter more into the merits of the issues concerning the performance of the product. Redmi 9 was therefore equipped with a SoC MediaTek Helio G80, therefore a solution with FinFET CPU a 12nm characterized by the following configuration: 2 x ARM Cortex A75 + 6 ARM Cortex A55. It is therefore a unit capable of releasing a maximum power of 2GHz. Then there is also one Mali-G52 MC2 GPU from 950 MHz, assisted by the presence of 4GB di RAM LPDDR4X e 64GB internal memory of type eMMC 5.1. This, at least, is the version that we have had the opportunity to try, but there is also the one with a lower memory cut (3 / 32GB).

Given the past experience, with Redmi Note 9, I believed that in this case too I would have been unhappy with the performance offered by the hardware. I must say, however, that 4GB of RAM is perhaps the minimum union on Android, given that the applications run rather well even after several hours of use of the smartphone. In this regard, however, the management of RAM is rather aggressive, given that the apps that have been open for the longest time on the smartphone are systematically removed from memory to make room for new operations. Despite this, however, the system is quite stable and there is never any sudden closure of programs or sudden crash of MIUI.

No problem even in viewing multimedia content, on YouTube o Netflix, being able to enjoy the highest possible resolution thanks to the presence of Widevine type L1. There is the drop notch, it is true, but we forget this component very easily after a few hours of using the smartphone. I have not noticed any particular critical issues with the main apps used on the smartphone which simply inhibit the use of this area by keeping it active for notifications, times and little else. Even during the stages of Gaming you will not have any problem, being able to also enjoy excellent gameplay. This is not one of the most responsive devices in this respect but, despite everything, I still managed to play Call of Duty Mobile rather smoothly, with an average but stable frame-rate.



On this phone we find ls MIUI 11, therefore the latest customization of Android by Xiaomi. Everything is based on Android 10 and, currently, the version we have is the MIUI Global 11.0.4 (QJCEUXM), with security patches dating back to 1 June 2020. Not much has changed, therefore, regarding the user experience offered by the other smartphones of the Chinese house that we have been able to test in this period. As always, therefore, we have the application for the phone management, which also helps us in terms of device security. In the settings, then, we always find the usual items that we already know, such as the dark mode in the display or the Themes option. Everything turns out to be fairly neat and easy to find, as long as you have a minimum of knowledge with such software.

Lacking 90Hz, or even more, the fluidity of the panel is the same as always. With 60Hz, in fact, it is possible to appreciate the large gap that we have with different products, with a higher refresh rate. Everything seems slower, more cumbersome and, the animations themselves, are not as clean as you would expect. We must also consider the price of this product, which therefore enjoys excellent, complete and efficient software.


Redmi 9 offers a quad-camera with main sensor da 13MP with opening f / 2.2 e FOV of 75,2 °, assisted by the presence of a wide-angle lens da 8MP with opening f / 2.2 e FOV of 118 °, Of a macro sensor da 5MP with opening f / 2.4 and a further depth sensor da 2MP and opening f / 2.4.

in daytime hours the quality is quite good, as you can appreciate a good white balance and overall colors close to reality but perhaps a little too dull. Let's say that even in unfavorable light conditions, with a strong glare on the clouds, the main sensor did not behave badly at all. The same does not fully apply to the wide angle lens which, in fact, returns only sufficient quality without distorting the image too much. Taking some photos with the macro mode, then, I noticed a good focus on the main subject but a really low level of detail.

Di notte the quality drops considerably, as the whole sector cannot manage the artificial lights in the best way, showing too many imperfections. It would have been most useful, therefore, to be able to take advantage of the Night Mode, even on this model. On the part of the company, however, there was no intention to add it as a standard function, therefore we will have to hope for a future update to find this option on this smartphone. At the moment, therefore, I cannot be satisfied with the quality returned by this sector in unfavorable lighting conditions. You will also notice, in fact, mixed colors and very poorly defined contours. Taking advantage of the flash, then, I must tell you that the system is unable to manage the light of the single LED well, overexposing too close subjects.

Inside the drop notch there is a seat selfie camera da 8MP, with opening f / 2.0 e FOV of 77,8 °. In a certain way, therefore, the shots appeared immediately bright enough and with a good number of details. Obviously the best performance can be obtained during the daytime, even in conditions that are not exactly optimal in terms of brightness. From a certain point of view, however, this quality is not maintained even at sunset, therefore at night. In this case, in fact, increases the photographic noise and the colors are slightly more mixed. Despite having eliminated the beauty filter, it always seems that this is present even to a small extent.


With this device it is possible to shoot videos with a maximum resolution of 1080p a 30fps. As expected, therefore, the quality is not so exceptional, both as regards the level of detail reproduced, and for the poor stabilization. The only thing that really saves in this context, therefore, is the autofocus which has proven to be quite fast.

Connectivity & Audio

In terms of connectivity we are in the presence of a unit perhaps not too up to date but, in the same way, well equipped. Here we find, in fact, a form 802.11 Wi-Fi a / b / g / n / ac Dual Band which, even in the least covered areas of the house, manages to provide a connection worthy of note. When you are outside, however, you must necessarily activate the data network, being able to travel safely even with the 4G + (in my case with Fastweb Mobile). From this point of view, therefore, the coverage is good, as is the quality. I remind you, then, that there is no shortage of Bluetooth 5.0, L 'NFC FM radio and the GPS / A-GPS / GLONASS / Beidou. In the SIM slot, among other things, you can simultaneously insert two nano SIM cards, both with 4G support, and a microSD card, to expand the internal memory.

Taking a look at the sound quality, we are certainly in the presence of one of the best entry levels currently on the smartphone market. At the maximum volume, in fact, there is no distortion and the frequencies seem to be also quite balanced. I would have liked to have been able to enjoy slightly more marked bass but, despite this, the performance is more than satisfactory. Everything improves, then, with a pair of wired headphones, thanks to the presence of the audio jack, which makes the gaming experience much better. I would also like to point out that in the phase of call the voice is not too clear and clean, and this can be felt even when listening to a simple vocal note. It is possible to communicate in a barely sufficient way, therefore, with our interlocutor, considering also that in the slightly more crowded environments the audio released by the headset capsule it's a little too low.


On board this unit there is space for one battery da 5.020 mAh, able to guarantee excellent autonomy. During the whole trial period, in fact, I easily passed the 6 hours and 30 minutes of active screen, largely concluding all the various working days. Even with stress use, often keeping the LTE network active, I did not experience any backlash, arriving in the evening with still a good 30% of residual charge.

What has not impressed me is the recharge fast which, in fact, is not supported by this model. Or rather, with the charger supplied in the package you will be forced to stick to a maximum power of 10W, managing to get through by 10 to 100% in little more than 2 hours and minutes 30.

Price & Conclusions

redmi 9 is sold, on the official Xiaomi website, at the price of 149,90 € in the basic version from 3 / 32GB. If you want to aspire to the more expensive model, then the one with 4 / 64GB, you need to shell out 169,90 €. It is, therefore, a difference of only 20 euros at the end which, in my opinion, should be spent. I want, however, to make a small premise: I believe that the prices are slightly higher than expected, as I would have opted for a solution that included a price of 149,90 euros for the 4 / 64GB model and 129,90 euros for the basic model.

So much so that, just to confirm this, you can find the smartphone on Banggood own a 120 € (3 / 32GB). Beyond this aspect, however, it is absolutely worth spending more to grab the more "equipped" version, which in terms of performance has something more to offer. I believe that with only 3GB of RAM available, in fact, you would struggle to experience the same fluidity and speed of the system.

Redmi 9 3 / 32GB - Gearbest

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Despite everything, however, we are not yet in the presence of a true best buy because, at the moment, there are still some small burrs that might not have been there but that maybe with some updates will be resolved.

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