The question of how many inches is the screen diagonal of the popular smartphone Xiaomi Redmi Note 9 Pro, often becomes a decisive factor when buying a device. Many users are looking for accurate numbers to assess the ergonomics of the gadget and its suitability for multimedia consumption of content. It is the diagonal that determines how convenient it will be to watch movies, play games or read text from the display.
It should be noted that the manufacturer's stated size does not always coincide with the physical dimensions of the case, as the frame and shape of the cutout for the camera play an important role. In this article, we will discuss in detail the technical characteristics of the display, touch on the topic of pixel density and discuss how the real size affects the daily use of the smartphone.
The industry standards are now setting the rules, and even the budget segment that this model is about offers impressive metrics, and we're going to look at how effectively the front panel area is being used and what technologies are being used to improve visual perception, and we're going to see if you're just looking at numbers or if there's more important things.
Official characteristics of the matrix and diagonal
According to the technical documentation provided by the manufacturer, the screen diagonal of the Xiaomi Redmi Note 9 Pro is exactly 6.67 inches. This figure is the standard for modern “hoptop” phones, providing extensive workspace for the interface. However, it is important to understand that the inch measure is the distance between opposite angles of the visible area, and not the width or height of the device.
The matrix is made by technology IPS LCD, which provides excellent viewing angles and rich color reproduction, although inferior AMOLED-The resolution of the display is declared as Full. HD+, It's a pixel equivalent of 1080 by 2400 points, and this combination of diagonal and resolution creates a high density of pixels, making the picture clear even when you look closely.
For those who are used to operating the metric system, it is useful to know that 6.67 inches translates to about 16.94 centimeters. This is a significant size that requires addiction if you have previously used a more compact 5-inch model, the dimensions of the case are directly dependent on this figure, making the smartphone a fairly large device.
- 📏 The visible area is 6.67 inches.
- 🖥️ Type of matrix — IPS LCD factory-calibrated.
- 🔍 The pixel density is 395 ppi (pexels per inch).
- 🎨 Support for 16 million color shades.
It's also worth mentioning the 20:9 aspect ratio, which is a stretched format that has become popular in recent years because it allows you to comfortably hold your phone with one hand and ensures you can view video content without black bars on the sides.
DotDisplay Technology and Cutout Under Camera
One of the design features of the Redmi Note 9 Pro is the use of DotDisplay technology, which is a marketing name that implies a round-punch in the upper left corner of the screen to accommodate the front camera, which minimizes the area occupied by the interface elements, compared to outdated bangs or wide bezels.
The diameter of this hole is minimal and doesn't interfere with the way content is perceived in everyday use cases, and the system and most applications are adapted to this format, hiding the status bar or using a black theme to mask the camera, a compromise between the desire to increase usable area and the need to place sensors.
⚠️ Warning: When you stick a protective glass or film, make sure the accessory is labeled "Compatible with DotDisplay" or similar. Regular glass with a notch under the speaker may not fit and close a part of the useful image or the camera itself.
Also, the notch affects interface symmetry. In smartphone settings, you can often find options that allow you to hide the area around the camera in a black stripe, which visually aligns the top of the screen, which is especially true for those who are annoyed by asymmetry in the status bar.
Pixel density and image quality
The quality of a picture on a screen is determined not only by its physical size in inches, but also by how tightly packed the pixels. In the case of the Redmi Note 9 Pro, the PPI (pixels per inch) is 395 units, a value considered the “gold standard” for the budget and mid-range segment, since the human eye from 25-30 cm already has difficulty distinguishing individual points.
The high density of pickles ensures that fonts are clear when reading books or news, and smooths out the staircases on diagonal lines in games. IPS-matrices, unlike OLED, They have a constant backlight, which can slightly reduce contrast in the dark compared to more expensive analogues, and the brightness of the backlight here reaches 450 cd / m2, which is an average of the average.
By comparison, a table showing how resolution affects pixel density across diagonals will help us understand the place of the Redmi Note 9 Pro in the current smartphone landscape.
| Smartphone model | Diagonal (inches) | Permission | PPI (density) |
|---|---|---|---|
| Redmi Note 9 Pro | 6.67 | 2400 x 1080 | 395 |
| iPhone 12 | 6.1 | 2532 x 1170 | 460 |
| Samsung Galaxy A51 | 6.5 | 2400 x 1080 | 405 |
| Realme 6 Pro | 6.6 | 2400 x 1080 | 401 |
As the data shows, Xiaomi is on par with its competitors, offering comparable detail quality. For most users, the difference between 395 and 400 PPIs will be invisible without a magnifier. The main advantage here is the balance between power consumption and picture quality.
Protective glass and tactile sensations
The Redmi Note 9 Pro display surface is covered with Corning Gorilla Glass 5. This is an important aspect that is often overlooked by focusing only on inches.The fifth generation of the "gorilla" provides protection against falling from a height of up to 1.6 meters on rough surfaces, which is a standard requirement for modern devices.
Tactile glass is pleasant and smooth, promotes a good slip of the finger when typing or playing. However, like any glossy material, it is prone to accumulation of fingerprints and fatty traces. Regular rubbing with microfiber will help maintain optical transparency and color reproduction.
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To extend the life of the oleophobic coating (anti-fat layer), wipe the screen with only a soft cloth without using aggressive chemicals or alcohol in its pure form.
Despite the protection, the risk of scratching keys or sand in your pocket remains. Quartz sand is harder than glass, so carrying a phone in the same compartment with a small change can lead to micro scratches that will be noticeable in bright light.
⚠️ Attention: Using cheap protective glasses from unknown brands can impair touchscreen sensitivity and reduce screen brightness. Choose accessories with oleophobic coating and a thickness of no more than 0.3 mm.
The impact of size on ergonomics and management
The 6.67-inch diagonal puts certain limits on the device's ergonomics. The Redmi Note 9 Pro is a large smartphone that can be uncomfortable for people with a small palm. One-handed control becomes difficult, especially reaching the top corner of the screen with your thumb.
The manufacturer took this into account and implemented a special one-handed control mode in the MIUI shell, activating this feature reduces the image to the size of a compact phone, shifting it to the corner of the screen. You can get to the settings through the Settings menu → Additional settings → One-handed mode.
- 🖐️ The width of the body is about 77 mm, which is wide for the middle palm.
- ⚖️ The weight of the device in 209 grams is felt during prolonged use.
- 📱 Mode of one hand helps to compensate for large dimensions.
- 🎮 For games, this size is optimal, providing a good overview.
For video and gaming, the big screen is a definite plus: Immersion in content is better, and controls in shooters or strategies are more spacious, which reduces the number of erroneous clicks. Multimedia experience on such a diagonal is significantly superior to compact models.
☑️ Checking ergonomics in the store
Display settings and calibration
Owners of Xiaomi Redmi Note 9 Pro have access to advanced screen settings, allowing you to adapt the picture to your preferences. → You can choose the color scheme, whether it's saturated, standard or improved, and this allows you to compensate for the features. IPS-matrix.
Reading mode is also available, which adds a warm yellow filter to reduce eye strain when working with text in artificial light, and can be set to turn on the mode or activate it at sunset and dawn.
Hidden screen settings
The screen refresh rate is standard 60 Hz. Although the market already has models with 90 and 120 Hz, for example, the screen is not available. IPS-The 60 Hz resolution matrix is an acceptable trade-off between smoothness and power consumption. MIUI optimized software-based.
Comparison with competitors in the segment
If you compare the Redmi Note 9 Pro to other models released during the same period, you can see that 6.67 inches is a trend. For example, the Realme 6 Pro had 6.6 inches, and the Samsung Galaxy A51 had 6.5 inches.
The larger display area allows for a larger battery, which has a direct impact on autonomy. In this model, the 5020 mAh battery is combined with the size of the case.
⚠️ Note: When buying Smart View book cases, make sure they are compatible with the Pro version, as camera layout and dimensions may differ from the regular Redmi Note 9.
So, the 6.67 inch option is a good fit for those who prioritize media and games. For those who are looking for compactness, this model may seem cumbersome, but there are few alternatives to this smaller package.
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The 6.67 inch diagonal in the Redmi Note 9 Pro is the optimal balance between multimedia comfort and affordable price, although it requires getting used to the large dimensions of the case.