Xiaomi Redmi Note 7 is still one of the most popular budget smartphones due to its reliable filling and durable body. But even it has a weak spot - the screen glass, which when dropped is covered with a web of cracks or completely crumbles into fragments. The service center will take from 2,500 to 5 000 rubles for a replacement, and self-repair will cost 3-5 times less. This guide - Step-by-step disassembly of the phone, the choice of original glass, the nuances of peeling old coating and tips on how not to damage the matrix or plumes.
It's important to understand that replacing glass with a Redmi Note 7 is not just about gluing a new film. Here, the display module is a three-layer sandwich: a protective glass, a touch layer, and a matrix itself (OLED or IPS). If only the top glass is cracked, it can be replaced separately, but if you do something sloppy, it's easy to damage the sensor or screen, and we'll show you how to minimize the risks and save money without going to the workshop.
Training: tools and materials
Before you disassemble the Redmi Note 7, make sure you have everything you need. Without the right tools, you risk tearing plumes, leaving scratches on the body, or unevenly gluing new glass.
- 🔧 Set of screwdrivers (cross-haul) PH00, flat 1.5 mm, five-beam for screws under the back cover).
- 🧲 Suction (preferably two - for lifting glass and back panel).
- 📱 Mediator or plastic spatula (not metallic!).
- 🔥 Hair dryer or heat tile (for heating glue, temperature 60-80)°C).
- 🧴 Clay. B-7000 or LOCA (fixing).
- 🧻 Lickless wipes and isopropyl alcohol (for cleaning surfaces).
- 🛡️ Screen protection film (optional, but recommended).
Where to buy glass? Original parts for the Redmi Note 7 are sold on AliExpress (search art. MB-LC07-ZH-CN), in stores like FixPrice (but there are often fakes), or from official distributors Xiaomi. The average price is from 800 to 1,500 rubles. Pay attention to the quality of the adhesive layer: cheap glass can fall off in a week or have bubbles.
Step 1: Remove the back cover
On the Redmi Note 7, the back panel is mounted on latches and glue, so you need to remove it carefully. Don't use metal tools, they leave scratches on the aluminum body!
- Turn off the phone and remove it. SIM-map.
- Heat the edge of the back cover with a hair dryer (30–40 seconds) to soften the glue.
- Suction pick up the panel near the USB-C connector and pull up.
- In the resulting gap insert the mediator and carefully lead it around the perimeter, snapping the clamps.
Under the lid, you'll see the battery, the motherboard and the plumes. Don't pull the lid out, you'll see a fingerprint scanner plume glued to it, and you'll unplug it with a flat screwdriver, and you'll pull the plug.
☑️ What to check before removing the cover
Step 2: Turn off the plumes and remove the battery
To get to the display module, you need to disconnect all the plumes and remove the battery. On the Redmi Note 7, the battery is glued, so proceed carefully:
- 🔌 Unscrew 4 screws fixing the metal plate over the plumes.
- 📱 Disconnect the display connectors, cameras and power buttons (use a plastic shoulder blade!).
- 🔋 Put the battery in the mediator and pull it up. If it doesn't, heat it with a hair dryer (no more than 60).°C!).
⚠️ Warning: Don't use sharp objects to tamper with the battery - Redmi Note 7 has thin contacts that are easy to penetrate. If the battery is swollen, don't disassemble the phone yourself - it's dangerous!
Once the battery is removed, unscrew the screws holding the display module.
- 2 screws at the bottom (near the USB-C connector),
- 2 screws on top (under the speaker),
- 1 screw on the left (under the camera cover).
Step 3: Removing Old Glass
The most important step is to separate the broken glass from the matrix, and the key is to take your time and not push it too hard.
- Plug on the screen a wide scotch (so that the fragments do not fly).
- Heat the glass for 2-3 minutes (temperature 70-80 ° C).
- Put the tape on one end and slowly pull up. If the glass doesn't move, warm up again.
- After removal, remove the remains of the glue from the matrix with isopropyl alcohol.
If the glass is cracked but does not come out completely, use a string or guitar string:
- Put a thread under the glass at the edge of the screen.
With the right-left scaling, cut the glue layer.
- Repeat until the glass is separated.
What to do if the glass splits into small pieces?
| Problem. | Reason. | Decision |
|---|---|---|
| The glass doesn't go away despite the heat | Too thick adhesive layer | Increase the temperature to 85°C or use a string |
| The matrix is scratched. | Infection of fragments or metal tools | Replace the display module completely |
| The new glass is not glued. | Poorly cleaned surface | Repeat the alcohol cleansing and defat |
| The sensor does not work after assembly. | Damaged plume or improper connection | Check the connectors and integrity of contacts |
Step 4: Installation of a new glass
Before installing the new glass, degrease the matrix with alcohol and remove the dust with a liceless napkin.
- Apply the B-7000 glue in a thin layer on the edge of the matrix (not on glass!).
- Apply the glass carefully, starting at the top edge, and press it.
- Remove the excess glue with a napkin.
- Place the phone under a press (for example, between books) for 12-24 hours.
Use a UV lamp (if LOCA glue) to stick uniformly. Polymerization time is 5-10 minutes. After assembly, check the sensor sensitivity in the Settings menu → About phone → Equipment test.
💡
If the glass is replaced, check if there are any air bubbles left under it. To remove them, warm up the screen with a hair dryer (60 ° C) and press the glass with a heavy object for 1-2 hours.
Step 5: assembling the phone
Collect the Redmi Note 7 in reverse order:
1. Connect the display and camera plumes.
2. Install the battery and fix it with double-sided tape.
3. Roll up the motherboard and back cover.
Before final assembly, check:
- Does the sensor work (take the test in EngineerMode)
Do the pixels burn (start the video with a uniform color)
- If the phone is charging (plug the charger).
⚠️ Warning: If the phone does not turn on after assembly, check: - Correct connection of the battery plume. - Integrity of contacts on the motherboard. - Are the screws closed (they may touch the tracks).
💡
The main rule of assembly is not to pull the screws! On the Redmi Note 7, the thread in the case is plastic and easily breaks off. Tighten with a screwdriver with a force of no more than 0.3 Nm.
How much does it cost to replace glass in the service vs independently?
Prices for glass replacement on the Redmi Note 7 vary by region and workshop:
| Service | Service centre | Independently. |
|---|---|---|
| Glass replacement (without matrix) | 2 500–4 000 ₽ | 800–1 500 ₽ |
| Replacement of the display module completely | 5 000–7 000 ₽ | 3 000–4 500 ₽ |
| Diagnosis after a failed repair | 500–1 000 ₽ | — |
Self-repair is more profitable, but only if you are confident in your skills. The savings will be 60-70%, but if you make a mistake you will have to pay for the restoration of the matrix or plumes. If the phone is guaranteed, you should contact the official service - amateur activities will cancel the warranty obligations.