Broken glass on Xiaomi Redmi 7 is a problem that almost every smartphone owner faces. Even a minor crack turns into a web over time, prevents the use of the sensor, and fragments can hurt your fingers. The service center will charge from 1,500 to 3,000 rubles for a replacement, but with the tools and patience you can cope on your own - saving up to 70% of the cost.
In this article, we will discuss two ways to replace the device: complete removal of the display module (for the experienced) and separation of only glass (budget option), you will learn what tools you need, how to avoid damage to the plumes and what to do if after replacing the touchscreen stopped working, and also compare the prices of original and non-original glasses so you can choose the best option.
Training: tools and materials
Before you start disassembling, make sure you have everything you need. Xiaomi Redmi 7 has adhesive connection of the display module with the body, so you can not do without specialized tools.
- 🔧 Plastic blades (2-3 pieces) - for careful smearing of the body. Metal can leave scratches.
- 🔥 Dryer or thermo-air station - for softening the glue (temperature 60-80)°C).
- 🧲 Suction cups (2 pcs., 3-5 cm in diameter) - help to evenly raise the glass.
- 📱 New glass - original (article) MB-DISP-REDMI7) or analogue (for example, from Nillkin or Spigen).
- 🧴 Clay. B-7000 or LOCA — to fix new glass (if not included in the set).
- 🔍 Loop or microscope – to check the contacts of plumes.
The cost of a full set of tools — from 800 rubles on AliExpress or in radio stores. If you plan to repair regularly, it makes sense to buy a set for replacing glasses (price ~ 1,500 rubles.), which has everything you need, including tweezers and screwdrivers.
⚠️ Warning: Do not use a household hair dryer at maximum power - it can overheat the battery and cause it to bloat. The optimal heating temperature of the case is 60-70°C (check with your hand: the body should be hot, but not burnt).
Step 1: Dismantling the back cover and battery
Start by turning off your phone and retrieving it. SIM-Then the maps:
- Heat the back cover with a hair dryer around the perimeter for 2-3 minutes. This will soften the glue.
- Insert a plastic blade into the gap between the lid and the body (start at the bottom edge where the charging connector is). Carefully drive the blade along the edge, separating the lid.
- After removing the lid, unplug the battery plume (it is under a black protective film) and use tweezers or a plastic shoulder blade to plug the connector.
If the battery is blown up, don't try to puncture it or bend it, it can lead to fire, in which case it is better to contact the service.
☑️ Safety during disassembly
Step 2: Disconnect the display module
The Redmi 7 display is attached to the body with glue and latches, to remove it:
- Heat the front of the phone with a hairdryer (especially around the edges) for 3-5 minutes.
- Stick the suction cups to the glass and gently pull up. If the glass doesn't lend itself, reheat the problem areas.
- After separation of the glass from the body, disconnect the plumes of the display and sensor (they are located under metal protection, which must be unscrewed with a T3 screwdriver).
Important: the plumes are very fragile. Don't pull them by the wires, just take the plastic connectors.
| Element | Number of screws | Type of screwdriver. | Note |
|---|---|---|---|
| Back cover. | — | — | It's glue-staining, no screws. |
| Metallic protection of plumes | 6 | T3 | Different lengths of screws – remember the location |
| Maternity board anchorage | 10 | T4 and Phillips #00 | Some screws under protective stickers |
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Take a picture of the location of the screws and plumes before disconnecting – this will help to properly assemble the phone back.
Step 3: Glass Replacement – Two Methods
Here you have a choice: replace only the glass (cheaper, but more difficult) or the entire display module (easier, but more expensive).
Method 1: Replace only glass (budget)
This is fine if the sensor and the sensor are working.
- 🔪 Scalpel or cutter – to remove old glue.
- 🧴 Solvent (acetone or white spirit) - to clean the surface.
- 📏 Line or pattern - to fit a new glass smoothly.
Algorithm:
- Remove the old glass by heating it with a hair dryer and putting it on with a spatula.
- Remove the glue residue from the matrix with a solvent (do not use abrasives!).
- Apply a new adhesive (LOCA or B-7000) to the matrix in a thin layer.
- Stick the new glass, press and remove the excess glue.
Method 2: Replace the entire display module (reliable)
If the array is damaged or you are afraid of damaging it when the glass is separated, buy a full display module (Article MB-DISP-REDMI7-FULL).
- Disconnect the old module (as described in Step 2).
- Transfer to the new module a protective frame and adhesive pads from the old one.
- Connect the plumes and lock the module screws.
What if after the replacement the glass "goes away" at the edges?
Assembly and performance check
After changing the glass, collect the phone in reverse order:
- Connect the display and battery plumes.
- Set the motherboard and secure it with screws.
- Stick the back cover (use double-sided scotch or new glue).
Before final assembly, be sure to check:
- 📱 Does the sensor work (take a test in Settings) → The phone. → Equipment test).
- 🔋 The phone is on and charging.
- 📶 Antennas catch the network (if after disassembly the signal is missing, check the antenna plumes).
⚠️ Warning: If the phone doesn't turn on after assembly, check: Is the battery plume connected (a common mistake is forgetting to connect it back) Is the contacts on the motherboard closed (look for foreign objects).
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If the sensor is not working properly (for example, a touch floats), it is likely that the touchscreen plume is not connected tightly or damaged. Try reconnecting it or replacing the plume (article MB-TOUCH-REDMI7).
Cost of repair: DIY vs Service Center
Glass replacement prices vary by region and type of glass, and here is a comparison table for Moscow and the regions (2026):
| Type of repair | Cost in service (₽) | Cost DIY (₽) | Note |
|---|---|---|---|
| Replacement of glass only (analogue) | 1 500–2 000 | 300–600 | No warranty on the sensor |
| Replacement of glass only (original) | 2 500–3 000 | 800–1 200 | 1-3 month warranty |
| Replacement of the full module (analogue) | 3 000–4 000 | 1 500–2 000 | Includes a matrix and a sensor |
| Replacement of the full module (original) | 4 500–5 500 | 2 500–3 000 | Full warranty 6-12 months |
The most profitable to buy spare parts on AliExpress (delivery of 2-4 weeks) or in Russian stores such as Beru or M. Video (delivery of 1-3 days).Please note: cheap glass (below 300 rubles.) often have poor sensor sensitivity and quickly covered with scratches.
Frequent Mistakes and How to Avoid Them
Even experienced craftsmen sometimes make mistakes when replacing glass.
- 🔥 Overheating of the body - causes the plumes to detach or the battery to bloat. Solution: Use a thermocouple or an infrared thermometer to monitor the temperature.
- 🧲 Dust gets under the glass, you'll see black dots after assembly. Solution: do the work in a clean room, use sticky tape to remove the dust.
- 📉 Uneven glass gluing leads to waves on the screen. Solution: Use a press (you can stack heavy books) to hold it evenly for 12 to 24 hours.
- ⚡ Forgot to turn off the battery, risk short circuit. Solution: always disconnect the battery plume first thing.
If you’ve never repaired a phone before, work out on a non-working device or watch a YouTube video disassembly (see “Xiaomi Redmi 7 display replacement”).