In the world of budget smartphones, it is rare for two devices from the same manufacturer to cause such heated debate among users. Xiaomi Redmi 9 and Xiaomi Redmi Note 9S came out almost simultaneously, occupying adjacent but still different niches in the market. The buyer often faces a difficult choice: should you overpay for the version with the prefix “Note” or the basic model will cope with the tasks as well?
Both smartphones are built on Qualcomm or MediaTek (depending on the region) and offer similar visual experiences, but the devil lies in the details. Performance and camera quality are the two pillars that hold the price difference. If you plan to use the phone not only for calls and messengers, but also for games or mobile photography, this choice will become critical.
In this article, we will conduct a deep comparison of technical characteristics, analyze real-world use cases and find out which of these models deserves your attention right now. We will not just list dry numbers from the specifications, but try to understand how these parameters affect the daily life of the owner of the gadget.
Body design and ergonomics
The appearance of the Redmi series smartphones has always caused many questions, and the pair in question was no exception. Redmi Note 9S received a more modern and strict design with a glossy or matte (depending on color) rear window, which, alas, actively collects fingerprints. The camera block is made in the form of a vertical strip occupying the left side of the back, which visually pulls the device.
The Redmi 9, on the other hand, looks simpler, with a polycarbonate back with a distinctive texture pattern that should hide scratches, but the material feels cheaper to touch. The ergonomics are similar, although the Note 9S is slightly thinner and nicer in the hand thanks to the rounded edges of the screen.
- 📱 Material: Note 9S The Redmi 9 uses Gorilla Glass 5 glass on the front, which is rare for this segment, while the Redmi 9 is protected by less durable glass.
- 🎨 Color options: Note line 9S Offers more noble shades such as Cosmic Blue and Glacier White.
- ⚖️ Weight: Both smartphones are pretty weighty, but the Redmi 9 feels a little more massive due to its plastic body.
⚠️ Attention: The Redmi Note's glossy back panel 9S without using the cover very quickly covered with micro scratches and greasy traces, so immediately after purchase, it is recommended to purchase a protective accessory.
It's also worth noting the location of the controls. The fingerprint scanner on both devices is built into the on-right edge button. It's a convenient and fast solution that works more stable than the optical scanners in the screen. However, on Redmi 9, the button can backfire a little more because of the plastic case build.
Screen and image quality
Both smartphones are equipped with IPS-matrixes with a diagonal of 6.53 inches and a resolution of FullHD + (2340×1080 pixels). On paper, the parameters are identical, but in reality there are nuances. Xiaomi Redmi Note 9S boasts slightly better color calibration and higher maximum brightness, which makes reading information in the sun more comfortable.
The pixel density is about 395 ppi, which ensures high definition fonts and images. The black color on both screens goes into gray, which is a typical problem. IPS-The brightness of the automatic adjustment works adequately, although sometimes it requires manual adjustment at night.
Screen protection is another important aspect. As mentioned, the Note 9S is protected by Gorilla Glass 5, which can withstand a drop from a height of about 1.6 meters on a rough surface. Redmi 9 is not certified Corning, using conventional tempered glass, the risk of breaking which when falling on asphalt is much higher.
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To protect the screen of any of these smartphones, be sure to use a protective glass, not a film, as IPS-matrixes are sensitive to spot impacts.
Productivity and gaming opportunities
The heart of the Redmi 9 is the MediaTek Helio G80, which is an entry-level budget solution that does a good job with interfaces and light tasks, but can perform poorly in heavy applications.
The Xiaomi Redmi Note 9S features a Qualcomm Snapdragon 720G chipset. That's a whole other level.Snapdragon architecture delivers not only faster performance in benchmarks (AnTuTu shows almost a two-fold advantage), but better game optimization.The Adreno 618 graphics accelerator vs. the Mali-G52 MC2 is a win for Qualcomm by a huge margin.
| Characteristics | Redmi 9 | Redmi Note 9S |
|---|---|---|
| Processor | Helio G80 | Snapdragon 720G |
| RAM (RAM) | 3/4 GB | 4/6 GB |
| AnTuTu (v9) | ~200 000 | ~330 000 |
| Games (PUBG) | Low settings | Medium/High |
If you plan to run PUBG Mobile, Call of Duty or Genshin Impact, the choice is obvious. Redmi 9 games will go with constant drawdowns even at minimal settings, while the Note 9S will allow you to play comfortably on medium graphics settings. The heating of the Snapdragon 720G is also better controlled thanks to a more slimmer process.
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The performance difference between these models is huge: the Snapdragon 720G in the Note 9S is more powerful than the Helio G80 by almost 1.5-2 times, which is critical for gaming and multitasking.
Cameras: photo and video
The Redmi 9 main camera has a 13MP module that takes perfectly decent images in good light. However, once the sun is hidden behind the horizon, the noise and loss of detail problems begin. The 8MP wide-angle camera and 5MP macro lens are more decorative and rarely give usable results.
The Redmi Note 9S offers a much more advanced four-camera system. The 48MP main module (Sony IMX582 or Samsung GM1) with f/1.8 aperture allows you to take detailed pictures even at dusk thanks to Night Mode mode. Video stabilization is also better implemented here, although optical stabilization (OIS) is not available in either model.
- 📸 Main sensor: 48 MP vs 13 MP – the difference in detail is noticeable to the naked eye.
- 🌌 Night shooting: Note 9S The redmi 9 is just a dark spot.
- 🎥 Video: Both smartphones can write 4K, But on Redmi 9, sound quality and stabilization leave much to be desired.
⚠️ Warning: Don't expect miracles from the macro camera and depth sensor on both smartphones, and 90% of the time, these modules are marketing ploys and are not practical.
The front camera of Redmi 9 has a resolution of 8 MP, while the Note 9S – 16 MP. Selfies are not obtained clearer, with better dynamic range. For video calls in Zoom or Skype Redmi Note 9S is also better suited due to better image processing software algorithms.
Autonomy and charging speed
Both smartphones feature 5020mAh batteries.This is a great indicator that allows both devices to confidently hold on to a day and a half to two of moderate use. The energy efficiency of the Snapdragon 720G processor in the Note 9S is still slightly higher, which in downtime and easy operation scenarios gives it a slight advantage in running time from a single charge.
The package is also exciting: the box with both devices comes with an 18W charger. However, the Redmi Note 9S supports Quick Charge 4.0 fast charging technology, which allows you to fill the battery faster. Full charging takes about 2 hours, which for a capacity of 5000 mAh is an acceptable, but not a record result.
☑️ Checking the battery before buying a used one
Importantly, battery capacity will degrade over time, and given that both smartphones are not new, you should be prepared to buy a used one with a capacity of 80-90% of the declared capacity.
Software and interfaces
Both smartphones are based on the Android operating system with the proprietary shell MIUI (or the new HyperOS depending on the region and updates). the interface is rich in features, but also saturated with advertising and pre-installed junk software, which is desirable to remove immediately after the first turn on.
Support for updates is a big nuance. The Redmi Note 9S, being a higher-end device, has been given priority in Android updates and security patches. Redmi 9 has also been updated, but its support cycle ended earlier. At the time of writing, both devices may not be receiving major Android updates, remaining on the latest available version of MIUI.
How to turn off advertising in MIUI?
For advanced users, it is important to have bootloader unlocking. On both devices, it is possible, but requires a wait of 168 hours (7 days) after the Mi Account is attached. This allows you to install custom firmware, such as LineageOS or Pixel Experience, to breathe new life into the smartphone and get a clean Android.
Conclusions and Comparisons
To sum up, the Xiaomi Redmi Note 9S is the clear winner in this comparison: it offers a much more powerful processor, better cameras, better screen and glass, and the overpayment for the Note version is totally justified in this case, because you get a mid-range device, not an entry-level one.
The Redmi 9 is only valid if the budget is extremely tight and the price difference between the used models is significant. For the elderly, children or as a second working phone, it will do, but as a main device in 2026-2026 it is already obsolete faster than its counterpart.
- 🏆 Winner: Redmi Note 9S wins on all fronts.
- 💰 Price/Quality: In the secondary market Note 9S It gives more for each invested ruble.
- 🔋 More powerful "iron" in Note 9S It will ensure the relevance of the smartphone for a longer period of time.
⚠️ Note: When buying a used smartphone, be sure to check the operation of all communication modules (GPS, Wi-Fi, NFC), Redmi 9 has experienced problems with signal reception in some regions.