If you are looking for a smartphone that stands out for its excellent value for money and brings together features typical of the upper mid-range, the Xiaomi Redmi Note 9S It's one of the most complete and balanced options on the market. Throughout this extensive review, you'll discover its technical specifications, design details, user experience, cameras, software, and everything you need to know before purchasing it, providing comprehensive information that will help you decide if it's the phone that best suits your needs.
Design, construction and first impressions
Design Xiaomi Redmi Note 9S does not leave anyone indifferent. It combines quality materials such as Gorilla Glass 5 Both on the front and back, giving it an elegant presence and a premium feel in hand. The device is available in three attractive colors (blue, white, and black) and shows special attention to details such as the curved edges, which significantly improve grip and ergonomics.
With dimensions of 166,9 x 76 x 8,8 mm and a weight of 209 gramsThis is a large and somewhat heavy phone, a direct consequence of its generous 6,67-inch screen and ultra-high-capacity battery. This robustness contributes to its durability and a sense of security when using it, although it may be less comfortable for those who prefer compact devices or have small hands.
One of its differentiating elements is in the arrangement of the rear camera module, centered and rectangular in shape, slightly protruding. The case included in the box helps protect this area and reduces fingerprints, which tend to accumulate due to the glossy glass finish. These details demonstrate the focus on usability and long-term durability.
In the frames we find the side fingerprint reader, integrated into the power button, with a quick response and comfortable handling for both right- and left-handed users. Also maintained are elements so valued by many users, such as the headphone jack, the infrared emitter to control other devices and the USB Type-C port.
Display: visual and multimedia experience
The Redmi Note 9S's display is one of its greatest strengths. It is a 6,67-inch IPS/LCD panel with resolution FullHD+ (2400 x 1080 pixels) y 395 pixels per inchThis display offers an immersive viewing experience, ideal for watching movies, series, playing games, or enjoying any multimedia content in high definition.
The use of the front is excellent thanks to the small central hole for the front camera, which maximizes usable surface area and minimizes bezels. The screen-to-body ratio reaches figures over 91%, providing a sense of immersion and modernity.
In terms of image quality, the panel more than meets expectations in terms of brightness, contrast, and sharpness. Maximum brightness reaches 450 nits, sufficient for outdoor use, although in bright sunlight it might require a bit more intensity. Color calibration highlights a slightly warm bias that can be adjusted in the system settings, allowing you to customize the viewing experience to your preferences.
El factory-installed screen protector It reinforces protection against scratches, although, as with the back, fingerprints are easily marked and may require periodic cleaning.
In sound, it has mono speaker located on the bottom edge, which, while adequate, can easily be covered when holding the phone horizontally. The inclusion of a 3,5 mm jack is appreciated for those who prefer wired headphones. The multimedia experience is, overall, remarkable, although the audio could be more powerful.
Hardware and performance: balanced power
The heart of the Xiaomi Redmi Note 9S is the processor Qualcomm Snapdragon 720G, manufactured in 8 nanometers, focused not only on overall performance but also on offering energy efficiency and a better gaming experience. This chipset, along with the Adreno 618 GPU, allows you to enjoy the most popular and demanding mobile titles smoothly, especially when activating Game Turbo mode, which optimizes resources and minimizes interruptions.
The device is available in two main versions:
- 4GB de RAM y 64GB of internal storage (expandable via microSD up to 512GB).
- 6GB de RAM y 128GB of storage (also expandable via microSD).
Both models offer adequate performance for most users, although if you are looking for more fluidity when using many applications at once or want greater durability in the future, the version of 6GB of RAM is especially recommended. Performance in performance tests such as The top 5 mid-range mobile phones yields solid results: it far exceeds the 240.000 points in Antutu, placing it above many other phones in its price range. The everyday user experience is fluid, although in very demanding situations or after long camera sessions, some interface redrawing may appear, especially in the 4GB RAM version, attributable to the MIUI software and memory management.
Users who value the ability to run games like PUBG Mobile, Asphalt 9 or similar titles You'll find a very positive experience: games load quickly, in-game performance is stable, and the device's temperature remains within reasonable limits. The hardware also supports most current connectivity technologies, such as 2×2 MIMO WiFi, Bluetooth 5.0, USB-C and multi-band GPS (Galileo and Glonass).
Autonomy: long-lasting battery
One of the aspects that stands out most in the Redmi Note 9S and that users value the most is the battery. Incorporates a 5020 mAh battery, one of the largest in its segment, which guarantees outstanding autonomy in any usage profile. With intensive use (social networks, video, games and photography), you can easily reach between 8 to 10 hours of active screen and up to two full days without needing to recharge.
These figures place the Xiaomi Redmi Note 9S at the top of its category compared to autonomy. It also includes, 18W fast charge (22,5W charger included in the box), capable of recharging the phone in just over two hours. It's not the fastest speed on the market, but it's more than made up for by the enormous battery capacity. It doesn't have wireless or reverse charging, but given the price-performance ratio, these features aren't common in this range.
Operating system and software: MIUI and user experience
The Redmi Note 9S runs on MIUI, Xiaomi's custom layer based on Android, highly valued for the number of customization features and extra tools it integrates. The device initially arrived with MIUI 11 and Android 10 and has been receiving regular updates. MIUI stands out for its colorful design, multitude of organizational options, second space, well configured for new or experienced users, as well as features such as Game Turbo, memory cleaning, digital wellbeing and parental controls.
However, one of the less positive aspects is the inclusion of several pre-installed applications (bloatware), both its own and third-party apps (Amazon, Facebook, gaming apps, etc.), although many of them can be uninstalled to free up space.
MIUI incorporates ads in some native apps, a common feature on the brand's budget phones, although it can be disabled by accessing the settings. Customization goes much further: you can change themes, the desktop grid, activate quick replies from notifications, or configure the always-on display, tailoring the experience to each user.
Biometrics: fingerprint reader and facial unlocking
The Xiaomi Redmi Note 9S includes two biometric options: un side fingerprint reader y 2D face unlockThe fingerprint reader is especially fast and accurate at the hardware level, although the animation between recognition and the opening of the screen can be somewhat slow due to the optimization of the MIUI layer.
Face unlock, while quick and easy to set up, works best during the day or in good light, as it doesn't include an infrared sensor. The feature may be limited in low-light conditions. Overall, access security and convenience are guaranteed.
Cameras: In-depth analysis of the quad system
The photograph is the protagonist in this device. The rear camera system is composed of four sensors:
- 48 megapixel main camera: : 1/2″ sensor with f/1.79 aperture, Super Pixel technology that combines 4 in 1 for effective 12MP photos, focused on capturing light and detail.
- 8-megapixel ultra-wide angle: 119°, f/2.2 aperture, ideal for landscapes and group shots, although detail falls off compared to the main sensor.
- 5 megapixel macro camera: allows you to focus within a few centimeters for photographing small objects.
- 2 megapixel depth sensor: Improves blur and portrait effects.
On the front, it incorporates a 16 megapixel camera with f/2.48 aperture, discreetly located in the hole in the screen, which allows quality selfies both day and night (although in low light conditions, the definition decreases).
La camera app It is intuitive, with automatic modes, night, portrait, professional and the option to activate the 48MP shot for maximum detail. However, the macro mode It does not appear directly on the main screen, but in the settings menu.
Photographic quality day and night
During the day, the main sensor It offers excellent dynamic range, vivid colors, and remarkable detail. The wide-angle lens, while it greatly expands the scene, sacrifices some sharpness and tends toward warmer tones. The macro sensor, while minimal for most users, achieves very good results for users who enjoy close-up photography.
En night photographyThe main sensor maintains a decent level, although detail and dynamic range suffer. Night mode improves brightness and contrast, although some watercolor effect may appear in the background or a loss of definition in distant objects. The wide-angle and macro lenses lose quality in these conditions, so their use is recommended only in good lighting.
Portrait mode It is very correct, thanks to the depth sensor, with precise trimming and a gradual bokeh Quite natural. In selfies, HDR helps balance bright backgrounds, although it can sometimes over-brighten the face. At night, the selfie loses detail, but remains within the mid-range.
Institutional: allows recording up to 4K is 30 fpsIt doesn't have optical stabilization (OIS), only digital (EIS), so the results are stable but not comparable to higher-end models. The audio is fine, and the focus works quickly.
Technical specifications summary
- Screen: 6,67 inches, IPS/LCD, FullHD+, 395 ppi, Gorilla Glass 5.
- Processor: Qualcomm Snapdragon 720G (8nm), Adreno 618.
- RAM: 4GB or 6GB.
- Storage: 64GB or 128GB, expandable via microSD up to 512GB.
- Operating System: MIUI based on Android.
- Battery: 5020 mAh, 18W fast charging.
- Rear cameras: Main 48 MP, Ultra Wide 8 MP, Macro 5 MP, Depth 2 MP.
- Frontal camera: 16MP.
- Dimensions and weight: 166,9 x 76 x 8,8 mm, 209 g.
- Connectivity: WiFi 2×2 MIMO, Bluetooth 5.0, USB-C, 3.5mm Jack, GPS (Galileo/Glonass), infrared, FM radio.
- biometrics: Side fingerprint reader, face unlock.
Opinions, resistance and additional details
Users and experts have highlighted the Xiaomi Redmi Note 9S durability against accidental drops (provided a case is used), its good construction, and excellent balance of real-world performance given its range and price. The device withstands intensive use well and doesn't overheat, making it a safe choice if you're looking for durability.
The integration of elements such as dual SIM slot + independent microSD It's another differentiating point: you can use two lines and expand storage without sacrificing any functions, ideal for those who travel or use their mobile phone for work and personal use.
Details to consider include: absence of NFC In some markets (check the version you buy if you need mobile payments), the lack of wireless charging and the presence of some bloatware, although these aspects are common in the segment to which it belongs.
Price and where to buy the Xiaomi Redmi Note 9S
The Xiaomi Redmi Note 9S continues to position itself as one of the best mid-range alternatives for its price. You can currently find it in different configurations and stores, usually at prices ranging from the 190 and 220 euros depending on the version and the specific offer.
- 4GB/64GB Version: average price of 193,95 euros in specialized stores and online sales platforms.
- 6GB/128GB Version: It can be found around 212,51 euros, slightly higher, but recommended if you want a smoother experience and ample storage.
Both versions usually include a protective case, a fast charger, and in some cases, a screen protector already installed. Before purchasing, check if the model is the global or international version to avoid language problems or compatibility with local 4G.
Comparison and alternatives: what other models should be considered?
Currently, the Redmi Notes 9S competes in a mid-range that is saturated with options. However, it stands out against rivals such as the CUBOTA X18 or ments Mars, which offer similar features in price and performance, but in terms of autonomy and design, the Redmi stands out.
Compared to these models, the Note 9S stands out for its battery life, robustness, camera balance, and competitive price. Only users who prioritize NFC connectivity, a higher refresh rate display, or faster charging can find better alternatives in slightly higher price segments.
Who is the Xiaomi Redmi Note 9S aimed at?
The Xiaomi Redmi Note 9S is perfect for those looking for exceptional autonomy, large screen and durable build quality. It is ideal for users who use their mobile for watch videos, play games, take photos, manage social networks and want a device that can withstand intensive use without becoming unusable in a few years. Expandable storage and dual SIM make it a versatile option for both individuals and professionals.
Recommendations for use and user advice
If you decide on this model, always choose the 6GB RAM version If you plan on using a lot of apps, multitasking intensively, or want a smoother experience in the long run. Keep your phone (screen and glass back) clean to avoid lingering fingerprints. Go for the original case to protect the camera module and prevent the phone from wobbling on flat surfaces.
Uninstall any pre-installed apps you don't use and review MIUI settings to customize the screen color and remove ads from native apps. Set up Game Turbo mode if you're a regular gamer, and use cloud storage if you choose the 64GB version.
El Xiaomi Redmi Note 9S It combines robustness, battery life, balanced performance, and an outstanding multimedia experience, all while maintaining a very competitive price. It may not be the most innovative phone of the year or the one that stands out the most in any specific area, but its reliability, support for regular updates, and impressive battery life have established it as one of the most recommendable mid-range phones. If you're looking for a smartphone whose balance is its greatest strength and you want to forget about charging your phone every day, the Note 9S will be a safe bet for the average and advanced user.
