Xiaomi Redmi 4X: screen diagonal in inches and everything you need to know before buying

Xiaomi Redmi 4X is one of the most popular budget smartphones of 2017, which is still in demand in the secondary market. When choosing accessories, cases or protective glasses, many users are faced with the question: how many inches does the screen of this model? The answer seems simple, but in practice there are nuances associated with aspect ratio, pixel density and even regional versions of the device.

In this article, we will not only reveal the exact diagonal parameters of the Redmi 4X, but also explain why this indicator is important when buying cases, glasses or when comparing with other smartphones. You will also learn how to measure the screen yourself correctly, what mistakes users often make, and why some cases for the Redmi 4X may not fit even if the inches are specified.

This material will be useful for both beginners and experienced Xiaomi owners who want to understand the technical details or plan to sell / buy a device with their hands. We have collected up-to-date data, comparison tables and answers to frequent questions - all so you can make an informed decision.

Official data: screen diagonal Xiaomi Redmi 4X in inches and centimeters

According to the manufacturer’s technical specification, the Xiaomi Redmi 4X is equipped with a screen with a diagonal of 5.0 inches, this value is indicated in official documents, on the device box and in the service menu of the smartphone.

• 📏 5.0 inches is the physical diagonal of the matrix, measured from angle to angle over the active area of the screen (without considering the frames).
• 🔍 In some sources, you can find a value of 4.97 inches - this is due to rounding when translated from the metric system (12.6 cm). ≈ 4.96").
• 📱 In practice, the difference between 5.0" and 4.97" is imperceptible to the user, but can be critical when choosing precise accessories (e.g., liquid glass).

To convert inches to centimeters, a factor of 2.54 cm = 1 inch is used.

5.0 inches × 2.54 cm/inch = 12.7 cm

However, the actual diagonal of the Redmi 4X is approximately 12.6 cm, which is due to the fact that manufacturers often round values for marketing purposes.

⚠️ Attention: Do not confuse the screen diagonal with the size of the case! The full length of the smartphone is about 139.2 mm, and the diagonal of the matrix is only 12.6 cm".

Why it is important to know the exact diagonal: covers, glass and repair

Knowing the exact diagonal of the Redmi 4X is critical in three cases:

1. Buying cases and bumpers: Accessories manufacturers often specify a compatibility range (e.g., "4.7-5.2 inches"). A Redmi 4A (5.0) case may not be suitable for the 4X due to different camera or button locations, even if the diagonals match.
2. Selection of protective glass: To fit the glass accurately, not only inches must be considered, but also the aspect ratio (16:9 for 4X) and the radius of the corners rounded.
3. Screen repair: When ordering parts, the masters need precise matrix parameters, including the display module model (e.g., JDI NT35596 for some versions of the 4X).

Example: a user ordered a case for the Redmi 4 Pro (5.5) with only inches of focus, but the device did not fit due to the larger body. Or another case - the protective glass for the Redmi 4A did not close the front camera 4X, as their location differs by 2 mm.

How to measure the diagonal Xiaomi Redmi 4X yourself

If you're in doubt about the accuracy of these parameters or if you're buying accessories for a used device, you can measure the diagonal manually.

• 📏 Linear or rod-circular (more precisely).
• 📱 Clean screen surface (remove film or glass).
• 🔍 Good lighting.

Step-by-step:

Example: If you get a value of 12.6 cm, then:

12.6 ÷ 2.54 ≈ 4.96 inches (rounded to 5.0)

⚠️ Note: Do not measure the diagonal on the outer frame of the case - this will give an inflated result (about 6.5 inches for the Redmi). 4X). Measure only the active region of the matrix where the image is displayed.

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If you don't have a ruler, use a bank card: it is exactly 8.56 cm (3.37 inches) long. Attach the card to the screen diagonally and count how many cards fit from angle to angle (for a 5" screen, about 1.5 cards).

Comparison with other Xiaomi models: diagonal table

To get a better idea of how big the Redmi 4X screen is, compare it to other popular Xiaomi smartphones of the same period:

And you can see from the table that the Redmi 4X and 4A share the same diagonal and resolution, but they differ in processor and camera, which means that the cases for these models can be interchangeable, but only if you consider the location of the connectors, for example, the 4X has an infrared port on top and the 4A has a bottom.

Interesting fact: despite the same diagonal, Redmi 4 Prime has a clearer screen due to Full HD-This affects the comfort of reading and watching videos, but not the physical size of the device.

Frequent mistakes in the selection of accessories diagonally

Many users mistakenly believe that it is enough to know the diagonal in inches to pick up a case or glass, which in practice leads to the following problems:

• 🔄 The inconsistency of cutouts.Cover for Redmi 4X It may not be suitable for Redmi. 5A, even if the diagonals are the same (5.0) because of the different locations of the speaker or camera.
• 📦 Universal accessories: 5.0-inch covers are often designed for medium dimensions, but do not take into account the thickness of the Redmi body. 4X (8.65 mm).
• 🔍 Ignoring the radius of curvature. 4X The corners of the screen are rounded by 2.5 mm – this is important for the accurate fit of the glass.
• 🛠️ Recreational parts, and when you repair the screen, the wizard sometimes installs a Redmi matrix. 4A, which are identical but have a different color.

A case in point: a user bought a "universal" glass for a 5-inch smartphone, but it didn't close the proximity sensor because the cutout was shifted 1 mm to the left, and the screen sensor didn't work properly.

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Always check the compatibility of accessories not only diagonally, but also by the exact model of the smartphone. Even small differences in design can make the case or glass unusable.

Technical details: resolution, PPI and aspect ratio

Screen size isn’t the only factor that affects the user experience, and Xiaomi Redmi 4X is also important:

• 📺 Permission: 1280×720 pixel (HD). This is the standard for budget smartphones 2017 It may not be enough to watch high quality videos today.
• 🔎 Pixel density (PPI): 294 – this means that the pixels are visible to the naked eye on close inspection, but for most tasks (social networks, messengers) this is enough.
• 📏 16:9 is a classic format that is easy to watch videos, but less ergonomic for surfing the Internet compared to modern 18:9 or 19.5:9.

By comparison, the Redmi Note 4X has a 5.5′′ Full HD (1920×1080) resolution, which gives PPI = 401, which is a much sharper picture, but the Redmi 4X is better in compactness and weight (150 g vs. 165 g for the Note 4X).

If you plan to use your smartphone for reading or playing, it is worth considering that when you allow it to be used, you should use it. HD Some interface elements may look less smooth, for example, in games like this. PUBG Mobile textures will be less detailed than full textures HD-screen.

Where to buy cases and glass for Xiaomi Redmi 4X in 2026

Even though the Redmi 4X is out of production, the accessories are still available.

• 🛒 Official stores: Mi Store (residues of stock or universal models). AliExpress - search for "Xiaomi Redmi" 4X case" with rating filter.
• 🏬 Local shops: Network "Svyaznoy" or "MTS" - sometimes there are leftovers. Accessory stores near the subway (check availability by phone).
• 🔧 Repair shops: often sell glass and covers for popular models, even discontinued.

Tips for buying:

1. Check out reviews about the seller – especially on AliExpress, where you may find non-original accessories.
2. Compare photos of camera cutouts and connectors with your smartphone.
3. For glasses, choose options marked "Full Cover" - they cover the entire active area of the screen.

⚠️ Warning: Be careful with "universal" cases for "5-inch smartphones" that often don't take into account the location of Redmi buttons. 4X (Power button on the right, not the left, as some Samsung models).

FAQ: Answers to Frequent Questions About Redmi 4X Diagonal