Xiaomi Redmi 7A — One of the most popular budget smartphones, but even it is not immune to falls and cracks on the screen. If your device's display is covered with a web, stopped responding to touch or completely went out, do not rush to carry it to the service center. With the right tools and patience, you can replace the screen yourself, saving up to 70% of the cost of repairs in the workshop.
In this article you will find detailed instructions for replacing the screen with Redmi. 7A, Including the choice of original or analog module, the list of necessary tools, and step-by-step analysis of the phone with photos and video examples, we will also reveal the nuances that are not covered in most guides: How not to damage the plumes, what to do with the adhesive base and how to check the operability of the new display before the final assembly.
Before you start, evaluate your strength: repair requires care and attention to detail. If you've never taken a smartphone apart, practice on an old device or watch some videos of Redmi disassembly. 7A — This will help to avoid typical mistakes.
1. Diagnosis of malfunction: is the screen really to blame?
Before you order a new display, make sure that the problem is in it.Symptoms of malfunctioning screen Xiaomi Redmi 7A:
- 🕸️ Cracks or broken pixels – mechanical damage to the matrix.
- 🖥️ Black screen when the backlight is working (sounds, vibrations, indicators are lit).
- 👆 Does not respond to touch (or partially responds).
- 🌈 Image artifacts: stripes, flickering, distorted colors.
If the phone doesn’t turn on at all (no vibrations, no LEDs), the problem may be the battery, motherboard or plumes, in which case replacing the screen will not help.
⚠️ Attention: If the Redmi screen 7A It blinks or spontaneously shuts down, check the status of the plume connector on the motherboard. Often the problem lies in the oxidized contacts, not in the matrix itself.
For accurate diagnosis, connect your phone to your computer or charger:
If a charging indication appears (red/yellow LED), but the screen remains black, the matrix or plume is most likely to be to blame.
If the phone doesn’t respond to charging and isn’t detected by the computer, the problem is deeper (possibly a short circuit on the board).
2. Selection of a new screen: original vs. analog
For Xiaomi Redmi 7A Three types of displays are available:
| Screen type | Price (rupe) | Pluses | Cons |
|---|---|---|---|
| Original (OEM) | 3 500–5 000 | Perfect color quality, touch sensitivity, durability | Expensive, hard to find in stock |
| High-quality analogue | 2 000–3 000 | Acceptable quality, often with already pasted glass | There may be problems with color or color reproduction. |
| Budgetary analogue | 1 000–1 800 | Low price, quick delivery | Poor sensitivity, distorted colors, short service life |
Where to buy:
- Look for original screens on AliExpress (sellers with a rating above 98%) or in specialty stores (for example, GSMMoscow, Mobile-Repair).
Analogues can be taken on Avito or Yula, but be sure to check the reviews about the seller.
⚠️ Attention: At Redmi 7A The prefabricated module (screen) is used + touchscreen + You buy it, not a single matrix, because you're going to have to glue the sensor layer, which is very difficult at home.
Critical: Make sure that the screen comes with double-sided tape or glue to fix. 80 percent of the time, cheap modules are sold without it, and you'll have to buy more. 3M VHB or B7000 separately.
3. Screen replacement tools
For disassembly Xiaomi Redmi 7A You will need a new display setup:
- 🔧 Screwdriver kit: cross-haired PH00, flat 1.5 mm, five-pointed Y00 (back-coat).
- 📱 Plastic blades/mediators – to separate the screen and back cover.
- 🔥 Dryer or thermo-air station - for softening the glue (temperature 60-80)°C).
- 🧲 Magnetic mat or container – so as not to lose screws.
- 🧴 Isopropyl alcohol (90%+) — Cleaning contacts and removing glue residues.
- 📏 Suction - to raise the screen after heating.
- 🔌 Tweezers for working with plumes.
In addition, the following may be useful:
- Chain tester (multimeter) - to check the integrity of the plumes.
Scotch for fixing plumes (for example, Kapton tape).
- A magnifying glass or a magnifying glass for inspection of small details.
☑️ Preparation of the workplace
If you don't have a hair dryer, you can use a household iron (set a minimum temperature and warm the screen through the foil), however, this method is less accurate and can overheat the display.
4.The Xiaomi Redmi Step-by-step disassembly 7A
Before starting work, completely discharge the phone (up to 0%) and leave it off for 10-15 minutes, which minimizes the risk of short circuit in case of accidental contact with the board.
Step 1: Removing the back cover
1. heat the hair dryer edge of the back cover (especially near the buttons and connector) USB-C) within 2-3 minutes.
2. Insert a plastic blade into the gap between the lid and the body (start with the corners).
3. Carefully swipe the perimeter, separating the latches. Don't force - the lid is held on 12 plastic clips!
Step 2: Shutting off the battery
1. Unscrew 8 screws that fix the metal plate over the battery (use a five-point screwdriver). Y00).
2. Put the plate on and take it off.
3. disconnect the battery plume with a spatula (don't pull the wires!).
⚠️ Warning: If you accidentally close contacts on a circuit board, do not turn your phone on for 10 minutes. Give time to discharge the capacitors to avoid damage to the chips.
Step 3: Disconnect the screen plumes
1. Unscrew the screws holding the metal plate over the display plumes (usually 4 screws).
2. gently lift the plate and put it aside.
3. Disconnect the two plumes (display and touchscreen) with tweezers. Pull by the black tongue of the connector, not by the plume itself!
Photos of connectors:
The display plume is on the left, the touchscreen is on the right, and both are fixed by latches that you need to lift with a blade before you take it out.
Step 4: Removing the Old Screen
1. Heat the screen with a hair dryer (temperature 70-80)°C) for 3-5 minutes, evenly moving over the surface.
2. glue the suction cup to the bottom of the display (near the Home button) and pull up.
3. Insert a plastic blade into the resulting gap and slowly separate the screen, cutting the glue with a thread or a fishing line (if the screen does not lend itself).
If the screen cracks, seal it with wide tape so that the fragments do not fly apart when removed.
What to do if the screen does not move away?
5. Installation of a new screen
Before installing the new module, clean the phone frame of the residue of old glue. Use isopropyl alcohol and a lilac-free napkin. Don't scratch the surface with metal objects!
Step 1: Prepare a new screen
1. Remove the protective film from the inside of the module (if any).
2.Make sure that there is no contamination or damage on the plumes.
3. If the kit comes with adhesive tape, stick it around the perimeter of the frame (do not remove the upper protective layer!).
Step 2: Connecting the plumes
1. Carefully insert the new screen plumes into the connectors on the board. Make sure they sit down to the point.
2. Close the latches of the connectors (click should be heard).
3. Temporarily fasten the metal plate (without full tightening of the screws).
Step 3: Testing before fixing
1. Connect the battery and turn on the phone.
2. Check:
Does the lighting work (are there any dark spots)?
Does the touchscreen react to touches all over the screen?
- Are there any artifacts (strips, flickers).
3. If everything works, turn off the phone and disconnect the battery.
⚠️ Warning: If the phone doesn't turn on or overheats after connecting the new screen, immediately turn off the battery! you may have closed contacts on the board or damaged the plume.
Step 4: Screen fixation
1. Make sure there is no dust or villi on the frame.
2. gently attach a new screen, combining the holes for the speaker and buttons.
3. Press the display around the perimeter (start at the top) and remove the protective film with the adhesive tape.
4. Twistle all screws (do not pull!).
💡
If the adhesive tape is not included in the kit, use double-sided tape. 3M 467MP (Apply it not in a solid strip, but in separate pieces at the corners and middle of the sides, this will facilitate future repairs.
6.Phone assembly and final checks
Collect the phone in reverse order:
1. Connect the battery and fix it with a plate.
2. Install the back cover starting at the top (click the clips in turn so as not to break them).
3.Turn all the screws (check if there are any extra ones left!).
After assembly:
Turn on your phone and check the touchscreen sensitivity (use the Touch Screen Test app from Google Play).
Call your phone – make sure the speaker and microphone are working (the contacts are sometimes lost when changing the screen).
Charge the machine and check the battery indication.
If you have any extraneous noises (squeaking, crunch) after assembly, it means that the screen is unevenly installed or dirt is hit. Take the phone apart and repeat the fixation.
💡
The most common mistake when replacing the screen is incompletely adjoining the display to the frame, which leads to "waves" when pressed on the screen and the risk of dust. Always check the uniformity of the adhesion around the perimeter!
7.Typical problems after replacement and their solution
Even with a careful replacement, problems can occur, and here are the most common ways to fix them:
| Problem. | Possible cause | Decision |
|---|---|---|
| The screen is off. | Unconnected plume or damaged connector | Take the phone apart and check the contacts, and clean them with alcohol if necessary. |
| Touchscreen's not working. | The touchscreen plume is damaged or the connector latch is not fixed | Reconnect the plume, make sure the latch is closed before the click. |
| Colors are distorted | Unoriginal screen with poor color reproduction | Calibrate the colors in the settings (Settings) → Display. → Color mode). |
| Stripes have appeared. | Damaged matrix or plume during installation | Try reconnecting the plume. If it doesn't work, replace the screen. |
| Phone overheats | Short circuit on the board due to static electricity | Turn off the battery for 15 minutes, then reassemble. |
If the screen spontaneously presses after replacement (ghost touches), the problem is poor contact of the touchscreen plume or defective module.
- 🔄 Reconnect the plume.
- 🧴 Clean the contacts with alcohol.
- 📉 Reduce the sensitivity of the touch in the engineering menu (code # #3644633##).
8. Alternative repair methods
If replacing the screen seems too difficult, consider alternatives:
- 🛠️ Contact the service center – the average cost of replacing the Redmi screen 7A in workshops: 2,500-4000 rubles (including work and spare parts).
- 📱 Buy a used phone - a Redmi worker 7A Avito costs 3,000–5,000 rubles (sometimes cheaper than repairs).
- 🔄 Use a phone with an external display - through OTG-adapter can connect the monitor and use the smartphone as a mini-PC.
- 💰 Exchange by the trade-in program - some stores (for example, the Messenger) accept broken phones in the account of buying a new one.
If you decide to repair yourself, but are afraid of damaging the fee, practice on a donor phone (you can buy a broken Redmi). 7A for 500-1000 rubles on Avito).
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Remember, the warranty on the phone is canceled after self-repair. 7A It is better to contact the official Xiaomi service (even if the repair will be paid for).