Replacement of the display on Xiaomi Redmi 9: a detailed guide with photos and nuances

Xiaomi Redmi 9 remains one of the most popular budget smartphones even years after its release — reliable, productive, but vulnerable to falls.Cracked or broken display — the most common breakdown, and many owners decide to replace with their own hands. In this article, we will discuss how to change the screen on Redmi 9 (models). M2003J15SC, M2003J15SS), Avoiding common mistakes that lead to additional costs.

Replacing the screen yourself will cost 3-5 times less than repairing the screen, but requires care and preparation. We will describe each step in detail, from choosing the original or analog module to testing the sensor after installation, and focus on hidden pitfalls, which are rarely written about in brief instructions, for example, why the new screen may not respond to touch or display artifacts.

If you've never taken a smartphone apart, don't worry: the Redmi 9 is simpler than the flagships, and all the tools you need cost less than 1,000 rubles. The key is to follow the algorithm and take your time. Let's start with preparation.

1. Which display to choose for replacement: original vs analogues

The first and most important step is to buy a quality module, which will determine whether the new screen will work without any complaints. There are three types of displays on the market for the Redmi 9:

• 🔹 Original (OEM) — Residues from the factory or from donor devices guarantee 100% compatibility, but are more expensive (from 3,500 to 5000 rubles), labeled as "Original" or "Genuine».
• 🔹 Premium analogues - produced in the same factories as the originals but without the Xiaomi logo. OEM, Price: 2,500-3500 rubles.Look for Tianma brands, BOE, Huaxing.
• 🔹 Budget counterparts are cheap copies (from 1500 rubles), often with worse color reproduction, dim lighting or sensor problems%.

For Redmi 9 it is critical to choose a module with the right connector: this model uses the right plug. 30-pin connector (not the connector) 26-pin, Please tell the seller that the display is suitable for your modification (M2003J15SC or M2003J15SS). Also check the configuration: the box should have adhesive tape for fastening and protective film.

⚠️ Warning: If you buy a module with a frame already pasted, make sure it is black - Redmi 9 only uses white frames in rare regional versions.

Where to buy? Best options:

• 🛒 AliExpress is cheaper, but delivery is 2-4 weeks.Look for sellers with a rating above 98% and reviews from the photo installed screen.
• 🛒 Yandex Market/Ozon — faster, but prices are higher 20–30%. Check the description: often sell "originals", which are actually analogues.
• 🛒 Local service centers – can sell OEM-wholesale-priced modules.

2. Replacement tools: what to have on hand

Without the right tools, you risk damaging plumes, boards, or a new display. Here's the minimum set you'll need:

We further recommend:

• 🧲 Magnetic mat - so as not to lose screws (costs 200-400 rubles.).
• 🔋 External battery (power bank) – to test the screen before final assembly.
• 🧴 Isopropyl alcohol (90%+) — Cleaning contacts and removing glue residues.

⚠️ Warning: Do not use metal blades or knives to tweak the body - they scratch the frame and can damage the plumes. Plastic mediators are sold in sets of 5-10 pieces, take with reserve.

If you plan to repair regularly, consider buying a screen replacement kit (costs 1,000-1500 rubles on AliExpress). BGA-glue-station.

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Before starting work, take a picture of the location of all screws and plumes on the phone - this will help to properly assemble the device back.

3.Preparation of the phone: what to do before disassembly

The Redmi 9’s unpleasant feature is its brittle plumes, which are easily damaged if handled carelessly. To minimize risks, follow these steps:

1. Turn off the phone and remove it. SIM-If the battery is fixed (and Redmi 9 has one), it will prevent short circuits.
2. Discharge the battery to 20-30%. A fully charged battery is dangerous when heated (the risk of bloating).
3. Remove the back cover (if it has already moved) or prepare to remove it carefully. In Redmi 9, it is attached to latches and glue.

If the back cover is intact, it must be warmed up with a hair dryer around the perimeter (temperature 60-70).°C) for 2-3 minutes, then apply a plastic blade from any angle, be careful: there are flexible antenna contacts under the lid that can be torn off.

After removing the cover, you will see:

• 🔋 Battery with JST 1.0 connector.
• 📱 Motherboard closed with metal screen.
• 🔌 Camera plumes, dynamics and buttons.

Turn off the phone and remove it SIM-map|

Discharge the battery to 20-30%|

Prepare the workplace (clean surface, good lighting)|

Warm up the back cover with a hair dryer (60–70)°C)|

Push the cover with a plastic blade, starting at the corner-->

At this stage, do not disconnect the battery - its plume interferes, but removing it without experience is dangerous (you can damage the connector).

4. Step-by-step instruction: how to remove the old display

Now, the most important step is to dismantle the cracked screen, and follow the instructions in strict order.

1. Unscrew the 10 screws that hold the metal screen of the motherboard. They're of different lengths -- remember where they were (or take a picture). Use a screwdriver. PH00.
2. Carefully lift the metal plate. There are plumes of the display, cameras and buttons underneath. Don't pull it too hard. The plumes are fragile!
3. Disconnect the battery (if it interferes). JST 1.0 plastic blade. Do not use metal tools - risk short circuit!
4. Turn off the display plume. It's at the top of the board, it's locked with a latch. Pull the latch up, then pull out the plume.

Now you have to separate the display module from the body, and it's glued around the perimeter, so:

1. Warm up the screen with a hair dryer (temperature 70-80)°C) for 3-5 minutes. Heat evenly, especially at the edges.
2. Stick the suction cup to the bottom of the screen (where the Mi logo is usually located).
3. Pull the suction cup up with force while simultaneously putting the plastic blade on the screen. If it doesn't, warm up again.
4. Separate the module from the body. Be careful, there are plumes of the touch sensor and the backlights underneath the screen.

After removing the old display, clean the case of glue residues with isopropyl alcohol. Do not use acetone or solvents - they will damage the plastic!

5. Installation of a new display and assembly of the phone

Before installing the new module, check:

• 🔍 Integrity of plumes on the display itself (whether there are cracks or breaks).
• 🔍 Connector compatibility – the connector should fit perfectly into the socket on the board.
• 🔍 Presence of duct tape in the kit (if it is not, buy double-sided tape). 3M 9448A).

The installation is carried out in reverse order:

1. Apply glue around the perimeter of the case (or use the finished tape from the kit). Don't overdo it - excess glue can get on the plumes.
2. Connect the new display plume to the motherboard. Make sure the latch is closed before the click.
3. Place the module in place, starting at the top (where the speaker and front camera are located).
4. Connect the battery and check the performance before final assembly.

For testing:

• 📱 Connect your phone to the power bank (without back cover).
• 🔋 Make sure the screen turns on, reacts to touch, no broken pixels.
• 🔊 Check the speaker and front camera (they are attached to the display module).

⚠️ Warning: If the screen flashes, displays stripes or does not respond to touch, the problem may be: Bad contact of the plume (check if it is fully inserted), damaged connector on the motherboard (needs soldering iron repair). Broken display (return to the seller if the warranty allows).

If everything works, complete the assembly:

1. Install a metal screen on the motherboard and twist the screws.
2. Stick the back cover (use residues of old glue or new double-sided scotch).
3. Warm up the hair dryer lid around the perimeter for better fixation.

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Always test a new display before the phone is finally assembled, which will save time if you need to replace the plume or module.

6.Typical problems after replacement and how to fix them

Even with a careful replacement, there can be problems, and let's look at the most common ways to solve them:

If after replacing the display works, but artifacts (strips, flickering) appeared, the reason may lie in:

• 🔌 Bad contact plume - try reconnecting it.
• 🔋 Insufficient power – check the battery and connector.
• 📱 Damage to the graphics chip on the motherboard (requires diagnosis in the service).

For sensor calibration (if the touches are not recorded accurately):

1. Go to Settings. → The phone. → Version. MIUI (Tap 5 times according to version).
2. Back to Settings → Additionally. → Screen calibration.
3. Follow the instructions on the screen.

7.Substitution cost: comparison of self-repair and service

The price of replacing the display on the Redmi 9 varies depending on the module chosen and the method of repair.

• 🔧 Self-replacement: Original display: 3,500-5000 RUB Premium analogue: 2500-3500 RUB Budget analogue: 1500-2000 RUB Tools (one-time): 500-1000 RUB Total: 2000-6000 RUB.
• 🏥 Service center (unofficial): Cost of work: 1500-2500 RUB Display (at the client's choice): 2000-5000 RUB Total: 3,500-7500 RUB.
• 🏢 Xiaomi official service: Original display + work: 5000-7000 rubles Warranty: 6-12 months. Total: 5000-7000 rubles.

The most profitable self-replacement with a premium analogue - will cost 3000-4000 rubles. against 5000-7000 rubles. in the service.

• 🔴 Possibility to damage the motherboard (repair will cost 3000-10000 rubles.).
• 🔴 Loss of leakage (dust and moisture can get inside).
• 🔴 No guarantee (unlike the service).

If you are not sure about your skills, the best option is to buy a display yourself (for example, on AliExpress), and entrust the replacement to an informal service.

FAQ: Frequent questions about replacing the Redmi display 9