Why Redmi Note 9 screens break down and when you need a replacement
The Xiaomi Redmi Note 9 screen is one of the most vulnerable parts of the smartphone. Even with careful use, the risk of damage remains high: one drop from a height of 50 cm on the asphalt or a failed press in your pocket is enough to cause cracks, broken pixels or a complete sensor to stop working. Statistics from service centers show that more than 60% of repairs of this model are associated with the display.
Not all defects require a complete module replacement, for example, microcracks on glass without disturbing the sensor can be corrected by applying a protective film or tempered glass, but there are signs that repair is inevitable:
- π± Black screen after falling (the phone vibrates or makes sounds).
- π "Floating sensor β touches are not recorded where you press.
- π₯οΈ Multicolored stripes or artifacts on the display that do not disappear after a reboot.
- π₯ Broken glass with matrix damage (lighting visible, but no image).
Owners of the Redmi Note 9 often face another problem: the original display modules for this model are no longer fully manufactured, since the smartphone was released in 2020, this affects the price and availability of parts.
Original vs. copy: which display to choose to replace
When you replace your screen with a Redmi Note 9, you'll be offered three types of spare parts: original (OEM), quality (A+) and budget replicas (Copy), the difference between them being price, service life, and even color shades.
| Type of display | Cost (2026) | Pluses | Cons |
|---|---|---|---|
| Original (OEM) | 5 000 β 7 500 β½ | πΉ Full compliance with factory parameters. πΉ 6-12 months warranty. πΉ Precise color reproduction (ΞE < 2). | β High price. β Hard to find. |
| Copy of A+ (Premium) | 3 500 β 5 000 β½ | πΉ Quality close to the original. πΉ Good sensor sensitivity. | β There may be slight variations in colors. β 3-6 month warranty. |
| Budget copy (Copy) | 1 500 β 3 000 β½ | πΉ Low price. πΉ Quick replacement (available). | β Poor color reproduction (yellowish hue). β Low brightness. β Risk of Sensor Detachment in 3-6 Months. |
One important thing: the Redmi Note 9 has a display unit that comes with a frame and a sensor, which means that you can't just replace the glass (like some flagships) -- you have to change the entire unit, except for the microcracks that you can treat with polymer resin, but that's a temporary solution.
β οΈ WARNING: If you are offered a screen replacement for 1,000-1,500 β½, These displays often fall off after a few months or have dead sensor zones.
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Before buying a spare part, check it for performance! ask the wizard to turn on the test mode of the display (code # #3644633#) - this will show broken pixels and matrix defects.
How much does it cost to replace the display in service centers (prices 2026)
The cost of repair depends on the type of display, region and status of the service center. Below are the current prices for Moscow, St. Petersburg and the regions of Russia. Note that official services Xiaomi often work at a margin of 20-30% for the "brand", but give a warranty of up to 1 year.
| Type of service | Cost (with spare parts) | Duration of repairs | Guarantee |
|---|---|---|---|
| Official Xiaomi service | 6 500 β 9 000 β½ | 2-5 days | 12 months |
| Independent service (A+ display) | 4 500 β 6 000 β½ | 1-3 hours | 6 months |
| Independent Service (Copy Display) | 2 500 β 4 000 β½ | 1-2 hours | 3 months |
| Self-sustaining replacement | 1 500 β 3 500 β½ (spare) | 1-2 hours | No. |
In regions, prices may be 10-20% lower, but there is a higher risk of running into poor-quality parts. For example, in Yekaterinburg or Novosibirsk, replacing the display of the Redmi Note 9 on average costs 4000-5500 β½ module-A+. In small towns (population up to 200,000), the cost falls to 3,000β4,500. β½, The warranty is often limited to 1-3 months.
Tip: Before you put your phone back up for repair, back up your data. When you change the display, the wizard can reset or damage the plume, which will lead to loss of information. Use Mi Cloud or connect your smartphone to your PC via Mi PC Suite.
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The most reliable option is the official service, but it costs the most, and if the budget is limited, choose independent centers with good reviews and a guarantee of 6 months.
Self-replacement of the display: step-by-step instructions
If you decide to save and replace the screen Redmi Note 9 with your own hands, be prepared for the difficulties: this smartphone has a glue display module, which if you sloppy dismantle can damage.
- π§ Plastic mediators (for disassembly of the body).
- π₯ Hair dryer or heat tile (to soften glue).
- βοΈ Screwdriver. T3 and T5 (screw).
- 𧲠Suction (to take the screen off).
- π New display module (check compatibility!).
The replacement process takes about 1-2 hours.
Turn off the phone and remove it. SIM-map|Heat the edges of the screen with a hair dryer (temperature 60β70)Β°C)|Carefully tuck the display with a plastic mediator|Disconnect battery plumes and display|Install a new module and assemble the phone in reverse order.-->
The critical point is to turn off the battery plume, and if you don't do that before you take the display down, you can burn the motherboard, and you can also pay attention to this:
- π Adhesive tape under the battery - it must be carefully unstuck so as not to break.
- πΆ Antenna contacts on the sides of the body - they are easy to bend when assembled.
- π Sensor plume β it is fragile, do not pull on it.
β οΈ Warning: If the screen doesn't turn on after the replacement or if the strips appear, check: The density of the plumes (sometimes helps to reconnect them) The integrity of the contacts on the motherboard (possibly oxidized). Display compatibility with your modification Redmi Note 9 (there are versions with different matrices).
What to do if the new screen is not working?
Where to buy a display for Redmi Note 9: verified sellers
When buying a spare part, the main thing is to avoid counterfeiting.
- π¦ Packaging with hologram and serial number.
- π Marking on the plume (must coincide with the original).
- π± Check for broken pixels (check before paying!).
Recommended areas for purchase:
| The playground | Average price (A+ display) | Pluses | Cons |
|---|---|---|---|
| AliExpress | 3 000 β 4 500 β½ | β Wide choice. β Customer reviews. | β Long delivery (2-4 weeks). β The risk of getting married. |
| Yandex Market | 3 500 β 5 000 β½ | β Quick delivery (1-3 days). β Guarantee of return. | β Prices are higher than on AliExpress. |
| Local service centres | 4 000 β 6 000 β½ | β You can check before buying. β Often give a guarantee. | β Limited range. |
If you buy on AliExpress, look at the sellerβs rating (from 98% positive reviews) and photos of the real product. Avoid stores with suspiciously low prices, such as a display for 1,200 β½ It is guaranteed to be broken.
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Before buying, check with the seller whether the display is suitable for your modification of the Redmi Note 9. There are three versions: Note 9 (ginkgo), Note 9S (curtana) and Note 9 Pro (joyeuse) β the modules between them are incompatible!
Frequent Screen Replacement Mistakes and How to Avoid Them
Even experienced craftsmen sometimes make mistakes that lead to additional costs, and here are the most common problems and ways to prevent them:
- Battery plume damage, it's easy to break thin contacts when you disassemble, which will cause a quick discharge or a complete battery failure, so you turn off the battery first and lock the plume with tape.
- Sensor missetting. If the display is curved, there may be "dead zones" or spontaneous taps. Solution: check the sensor before final assembly (use the test in Settings β About Phone β All settings β Touch test).
- Dust gets under the screen, and it causes dilution when you light it up and squeaking when you press it, so you can do a clean room change, you can use an antistatic mat.
- Use of poor-quality glue. Cheap glue flakes off over time, and the screen starts to walk. So, buy a double-sided 3M tape or a special glue B-7000.
Another common problem is that the light sensor will not work when you replace it, and this happens when you forget to plug in the plume (it's separate from the display!) and to check the sensor, close the top of the screen with your hand, and the brightness will automatically decrease.
β οΈ Warning: If the phone stopped charging after the display was replaced, youβre likely to have damaged it. USB-The connector or its plume, in which case additional repairs (cost) will be required. ~1 500 β½).
Alternatives to Replacement: When You Can Do Without Repair
A cracked screen doesn't always require a full replacement, and in some cases, you can do with cheaper solutions.
- π‘οΈ Protective glass with adhesive base (cost) ~500 β½) β It's a microcracking device without damaging the matrix, and it's applied to an old screen and it glues the fragments together.
- π¨ Polymer resin for glass restoration (cost) ~1 000 β½) β It fills in the cracks and makes them less visible.
- π Software Color Calibration β If the screen is working but the colors are distorted, try resetting to Settings β Display. β Color mode β Standard.
If only the sensor is damaged (and the image remains clear), you can connect it. USB-mouse-wise OTG-adapter (cost) ~300 β½) And you can use your phone like this until you're ready for repairs:
- Buy it. OTG-Type-C adapter β USB.
- Connect the wired mouse.
- Include mouse support in Settings β Special features β Physical control β Enable mouse control.
These methods are temporary, but they can save money if you can't afford to replace the display, but remember that long-term use of a phone with a cracked screen can lead to moisture getting inside the case and corrosion of the motherboard.