Why the screen on the Redmi Note 8 Pro breaks and when it should be changed
The Xiaomi Redmi Note 8 Pro screen is one of the most vulnerable parts of the smartphone. Despite the protection of the Gorilla Glass 5, falls from a height of more than 1 meter, severe impacts or pressure on the display often lead to cracks, a βwebβ or complete failure of the sensor. Even if the image remains visible after damage, microcracks can break the tightness, which over time will lead to dust or moisture under the glass.
When exactly does a display need to be replaced? First, if colored stripes, artifacts or flickering appear on the screen, it is a sign of damage to the plume or matrix. Second, if the touchscreen is not working (even if there is an image); Third, if the glass is split so that sharp edges threaten cuts. Otherwise, (small scratches, point chips), you can do with a sticking of the protective glass or polishing.
Should you repair yourself? Replace the display in the service center will cost 5,000-12,000 rubles (depending on the originality of the spare part). If you have experience with small electronics and patience, self-replacement will cost 2-3 times less - the original display module (with a touchscreen and a frame) can be found for 3,000-6000 rubles on AliExpress or in Russian spare parts stores.
What tools will be needed to replace the screen
Without the right tools, replacing the display with the Redmi Note 8 Pro can be a nightmare.
- π§ Plastic blades (2-3 pieces) - for careful tweaking of clips and disconnection of plumes.
- π¨ The screwdriver. PH00 β for shell screws (normal) PH0 It will not work because the screws are small!).
- π₯ Hair dryer or thermal air station - for softening the glue around the perimeter of the screen (temperature 70-90)Β°C).
- π§² Magnetic mat or organizer β so as not to lose screws and small details.
- π± Screen suction cup β will help to gently raise the display after heating.
- π§΄ Isopropyl alcohol (90%+) β for cleaning glue residues and degreasing surfaces.
- ποΈ Tweezers with curved ends - for working with plumes and small details.
- π New glue scotch (B7000 or similar to the other, to fix a new display.
If you are planning a complete replacement of the display module (including the frame and touchscreen), you will need a fingerprint scanner to move it from the old screen to the new one. If you buy a module without a frame, be prepared to carefully separate the sensor from the old glass (this is difficult and risky!).
β οΈ Warning: Do not use metal blades or knives to tweak the screen! They can damage plumes or leave scratches on the body. Plastic mediators are safer, but require care.
βοΈ Preparation of the workplace
Step-by-step: how to disassemble Xiaomi Redmi Note 8 Pro
Disassembly of the smartphone begins with power outage and extraction of the tray for SIM-We're going to go ahead and do the algorithm:
- Heat the case. Turn the dryer on to the minimum power (or set the temperature 70-80 Β° C) and evenly warm the edges of the screen for 2-3 minutes. This will soften the glue. Don't overheat! Glass should not burn your fingers.
- Display compartment. Suction hold on to the bottom of the screen (near the charging socket) and gently pull up. Insert a plastic blade into the gap and slowly guide it around the perimeter, separating the display from the body. Don't raise the screen more than 45 times.Β° β plumes can be damaged!
- Disconnect the plumes. When you separate the screen, you'll see 3 plumes: display, touchscreen and fingerprint sensor. Carefully tuck them in with a plastic blade and unplug them from the motherboard. The plumes are brittle β don't pull the wires!
- Remove old glue. With isopropyl alcohol and a napkin, clean the frame of the case of glue residues. Don't use acetone or solvents - they can damage the plastic!
If you replace only glass (without a matrix), the process is more complicated: you will have to separate the touchscreen from the display using a special device (separator) and heating to 100-120 Β° C. Without experience, it is better not to risk - there is a great chance to damage the matrix.
What to do if the screen does not separate?
| Disassembly phase | Time. | Difficulty | Risks. |
|---|---|---|---|
| Heating the hull | 2-3 minutes | Low. | Battery overheating |
| Screen separation | 5-10 minutes | Medium | Damage to plumes |
| Disconnection of plumes | 3-5 minutes | Tall. | Contact break |
| Cleaning the glue | 5 minutes. | Low. | Liquor on the charge |
Installation of a new display: nuances and errors
Before installing the new screen, check its performance! Connect the plumes to the motherboard (without fixing the screen) and temporarily turn on the smartphone.
- πΊ Image clear, without broken pixels or stripes.
- π Touchscreen responds to touches across the area.
- π The fingerprint sensor can detect touch (if moved from the old screen).
If it works, you can start fixing. Here are the key points:
- Apply glue. Use bilateral B7000 tape or liquid LOCA glue (for full sealing). Apply a thin layer around the perimeter of the frame, avoiding the speaker and microphone area.
- Align the screen. Carefully apply the display, starting at the top, and gradually press it against the body. Don't push too hard, you can damage the matrix!
- After you stick it, make sure that all the latches on the sides are in place (especially in the area of power and volume buttons).
Mistakes that beginners often make:
- β Screen skewing - leads to uneven gaps and poor sealing.
- β Excess glue β can leak inside and damage plumes.
- β Forget to move the fingerprint sensor β the new screen will not recognize the fingers.
- β Do not check the performance before fixing - then you will have to redo everything.
β οΈ Warning: If the screen flickers or spontaneously presses after the replacement, the touchscreen plume is probably not tightly connected. Turn off your smartphone and check the contacts - they should be clean and well fixed.
π‘
If the speaker starts to sound muffled after assembly, check if it's covered with glue or a safety net.
Fingerprint scanner transfer: can you do without it?
The fingerprint sensor on the Redmi Note 8 Pro is built into the screen, so when you change the display, you need to move it from the old module to the new one. If you do not do this, the scanner will stop working, and the settings will appear an error "Error fingerprint sensor".
How to move the sensor:
- Carefully separate the sensor from the old screen using a thin plastic blade (it is glued to double-sided tape).
- Clean the contacts of the sensor and the new screen with isopropyl alcohol.
- Stick the sensor to a new place, combining the hole under the camera and the plume connector.
- Connect the plume to the motherboard and check the performance.
Can we do without a transfer? Technically, yes, but then:
- π You canβt unlock your phone with a fingerprint.
- π± In the security settings will appear warning about the fault of the sensor.
- π§ Some banking applications (e.g. Sberbank or Tinkoff) may block access due to an βuncertified deviceΒ».
If you buy a display module with a sensor already installed (such are sold on AliExpress), you donβt need to carry anything, but be careful β about 30% of these modules have non-original scanners that work slower or with errors.
π‘
Transferring the fingerprint sensor is a must if you want to keep unlocking functionality, and without it, the scanner will stop working forever.
Phone assembly and testing after replacement
After installing the new screen, it remains to assemble the smartphone in reverse order:
- Connect all the plumes (display, touch screen, fingerprint sensor, front camera).
- Install a metal plate that protects the plumes (it is attached to 2 screws).
- Turn all the sleeves (do not pull them!).
- Turn on your phone and check your workability.
What to test first:
- π₯οΈ Display: are there broken pixels, stripes, flickering.
- π Touchscreen: does it react to touching on the edges, is there no βdead zonesΒ».
- π Speaker and microphone: is the sound muffled, is there no wheezing.
- πΆ Network and Wi-Fi: sometimes after disassembly, the antenna plume leaves.
- π Charging: check if the connector is warming USB-C.
If something's not working:
- π Display/touchscreen problems β Check the sleeves, they may not be fully inserted.
- π No sound. β Clean the speaker hole from glue or dust.
- π΅ Not catching the net. β Check the antenna contacts on the motherboard.
β οΈ Warning: If the phone doesn't turn on at all after assembly, chances are you forgot to plug in the battery connector or damaged the power plume. Take your smartphone apart and check the contacts.
How much does it cost to replace the display and where to buy spare parts
The cost of replacing the screen with the Redmi Note 8 Pro depends on the type of spare part and place of purchase:
| Type of display | Price (rupe) | Where to buy | Pluses | Cons |
|---|---|---|---|---|
| Original (OEM) | 5 000β8 000 | Official Services, eBay | 100% compatible with the original scanner | Expensive, long wait. |
| Copy (quality copy) | 3 000β5 000 | AliExpress, local shops | Cheaper than the original, good quality | Maybe worse color reproduction. |
| B/o original | 2 000β4 000 | Avito, telegram channels | Cheap, original quality. | Risk of hidden defects |
| Glass only (without matrix) | 1 000β2 500 | Specialized workshops | The most budgetary option | It is difficult to replace yourself |
Where's the best place to buy?
- π AliExpress is the cheapest, but long wait (2-4 weeks).Look for sellers with a rating above 98% and reviews of the Redmi Note 8 Pro.
- π¬ Local parts stores are faster but more expensive.
- π§ Service centers - you can buy a spare part with an installation (it will come out cheaper than separately).
Selection advice:
- π Check that all the plumes and frames are included in the kit (sometimes only the matrix is sold).
- π¦ Ask the seller if the fingerprint scanner has been moved (if not, you will have to do it yourself).
- π¬ Read reviews: they often write about problems with color reproduction or touch screen.
π‘
Save on spare parts is not worth it - cheap copies often have poor color reproduction, uneven backlighting or quickly fail.