Redmi Note 7 screen: selection, replacement and repair of the display

Smartphone Xiaomi Redmi Note 7 has become a real bestseller due to its excellent price-quality ratio, but its glass-coated body does not always withstand a drop on the asphalt. Broken display turns a convenient device into a useless piece of technology, making it impossible to even make a simple call. Many owners are faced with a dilemma: go to a service center or try to save money and do the repairs themselves.

The situation is aggravated by the fact that there is a huge variation in the quality of components on the spare parts market for this model. From cheap copies that distort colors and quickly fade, to original panels that retain factory picture clarity. In order not to throw money away, you need to understand the difference between the types of matrices and the nuances of their installation.

In this article we will examine in detail all aspects related to Redmi Note 7 screen. You will find out what is different OLED from LCD in the context of this model (although only IPS is listed here), how to choose the right spare part and what tools are needed for replacement. We will also touch on repair issues if your matrix is ​​intact, but the protective glass is cracked.

Don't underestimate the complexity of the process. Even with instructions, you can damage the cables or break the matrix when removing the old glass. However, knowing the technology and having the right tools significantly increases the chances of successful repairs at home.

Types of matrices and display features of Redmi Note 7

Model Xiaomi Redmi Note 7 equipped with high-quality IPS display 6.3-inch diagonal with Full HD+ resolution. This means that the picture on it remains clear and bright even when exposed to direct sunlight, which is a big advantage over cheap, low-quality OLED screens. The manufacturer used technology In-Cell, which made it possible to make the frame around the screen minimal.

When looking for a replacement, it is important to understand that aftermarket manufacturers often offer two basic options. The first is an assembled module, which includes a touch layer (touchscreen), a matrix, and a frame. The second option is just glass, if you plan to re-glue it onto the original matrix using special equipment.

• 🔹 "A" grade copy - a cheap analogue, often has thicker frames, poorer color rendering and weak sensor sensitivity.
• 🔹 Original — an exact copy of the factory panel, retaining all characteristics, brightness and viewing angles.
• 🔹 Refurbished — the matrix on which the new glass is glued may have nuances in the operation of the sensor.

It is not uncommon for users to complain about a “green” or purple tint to the screen after purchasing a new part. This is a typical problem with cheap copies where the manufacturer has not calibrated the colors. White balance Such screens are often offset, which makes working with documents or viewing photos unpleasant.

Particular attention should be paid train connections. The original parts are more flexible and of higher quality, which reduces the risk of breakage when the phone is used frequently. Saving on this component can lead to the fact that after a couple of months the screen will stop responding to touches.

⚠️ Attention: Do not believe sellers who claim that they sell the “original OLED screen” for Redmi Note 7. This model has never used OLED matrices, only IPS. If you are offered OLED, this is a deception or a substitution of concepts.

Choosing a spare part: how not to make a mistake with quality

Ordering a new one display, you must clearly understand what type of part you need. If not only the surface, but also the matrix itself is broken (black spots, stripes, liquid leakage are visible), you will have to replace the entire module assembly. This is the most reliable option, which eliminates the need for complex glass re-gluing.

When choosing a module, pay attention to the presence of a frame. Modules with a frame (a module assembled with a frame) greatly simplify repairs, since you do not need to remove old glue from the smartphone body. However, such parts are often more expensive. Modules without a frame are cheaper, but require perfect preparation of the case before installation.

• 🔹 Check it out frame color: The original frame has a tint black or blue depending on the color of your phone case.
• 🔹 Pay attention to cable connector: it must be identical to the original one, without distortions or unnecessary details.
• 🔹 Check availability adapter for the cable: some copies require re-soldering or the use of an adapter.

It is also worth considering that touch layer in cheap copies it often works with a delay. This is especially noticeable when playing games or when typing quickly. If you are not ready to put up with lags, overpaying for a high-quality analogue or original will be completely justified.

If you order a part online, always ask the seller to send real photos of the part. Sometimes the original is indicated in the picture, but in fact a cheap copy arrives. Packaging must be intact, without traces of opening or repeated tape.

There is one more nuance - software version. Sometimes new screens can conflict with the device's old firmware, causing responsiveness issues. In this case, you may need to update the system to the latest version before installing a new spare part.

⚠️ Attention: Avoid purchasing screens marked “High Copy” or “1:1 Copy” if you are not prepared for the fact that the sensor may not work correctly in the lower corners of the screen.

For those who want to save money but get acceptable quality, there are options for “semi-counterfeits” of average quality. They have good color rendition, but may differ in thickness or tightness to the body. This is a compromise option that is suitable for second hand or work devices.

Tools and preparation for screen replacement

Before you start disassembling your smartphone, you need to prepare your workspace and all the necessary equipment. Repair Redmi Note 7 screen requires care and specialized tools, since the device body is glued and has many fragile latches. Any sudden movement can lead to a crack in the case or damage to the cables.

You will need a heating device to soften the glue, a suction cup to pull off the glass, a set of plastic mediators (plexes) to open the case, and also screwdrivers. It is advisable to have a hairdryer or thermal board on hand to evenly heat the edges of the device before starting work.

• 🔹 Hairdryer for construction or household purposes - to heat the glue around the perimeter of the screen (temperature about 80-100°C).
• 🔹 Sucker - necessary to create a gap between the glass and the frame after heating.
• 🔹 Plastic picks - to avoid scratching the body when separating parts.

Also be sure to prepare a new glue (B-7000 or similar) to fix the new screen. The old glue must be completely removed from the case, otherwise the new module will sit crookedly and may come off again. Do not use superglue as it will damage the plastic of the case during the next repair.

Don't forget to disable battery immediately after opening the case. This is a critical safety rule that will protect the motherboard from shorting if the cables are accidentally touched with a screwdriver or tool.

The working surface must be clean and level. Use a soft cloth to avoid scratching the phone while it is on the table. It is better to lay out all the screws in the order they are unscrewed or mark them on the diagram so as not to be confused during assembly.

Step-by-step instructions for replacing the display

The replacement process begins with heating the back of the device, as the screen is glued to the frame through the back cover. In some repair versions, you have to remove the back cover to get to the display mount, but most often the module is removed through the front panel. For Redmi Note 7, warming up the front edge is usually enough.

Warm up the edges of the device with a hairdryer for 3-5 minutes, constantly moving the air stream so as not to overheat the matrix. Then make a cut in the corner of the screen and carefully insert the suction cup. Pull back the glass and insert a thin plastic pick there.

Move the pick around the perimeter, cutting off the layer of glue. Be extremely careful in the area of ​​the volume and power buttons, as cables often pass through there. Do not use metal tools as they may cut through train or damage the matrix.

What to do if the screen does not come off?

If the glue is too strong, heat it again. Do not use force, otherwise the glass may crack. Use isopropyl alcohol to soften the glue by pouring it into the crack with a dropper.

After removing the screen, disconnect the battery cable. Then disconnect the display cable. Carefully remove the old module. Before installing a new one, clean the frame from any glue residue and wipe it with alcohol.

Connect the new shield to the board without gluing it. Turn on the phone and check the sensor operation, color rendering and backlight. Only after complete inspection, apply glue around the perimeter and fix the screen for 24 hours.

Installing a new display requires patience. Do not rush to press on the screen before the glue dries, otherwise it may become dislodged or damaged. Use rubber ties or a thick case to hold the screen in place.

Action	Tool	Importance	Risk of error
Heating the glue	Hairdryer	High	Matrix overheating
Split screen	Mediators	Critical	Damage to the cable
Power off	Screwdriver	Critical	Short circuit
Cleaning the Frame	Alcohol	Average	Glue residue

Repairing broken glass with an intact matrix

Sometimes it happens that when dropped, only the protective glass cracks, but the glass itself matrix continues to work properly. In this case, completely replacing the display assembly may seem like a waste of money. There is a glass re-gluing technology that allows you to preserve the original matrix.

However, this process is extremely difficult to perform at home. It requires a vacuum lamp, a string to cut the glue, and special equipment to remove splinters. Without professional equipment, the risk of damaging the matrix when removing fragments is more than 90%.

If you decide to try it yourself, you will need: laser cutting, OCA glue, vacuum press and microscope skills. This is not just “plywood”, but a full-fledged technological production.

• 🔹 String - used for cutting glue between glass and matrix.
• 🔹 Vacuum chamber — necessary to remove air bubbles after gluing new glass.
• 🔹 Polymer glue - used for bonding layers, requires curing with a UV lamp.

Most services offer glass re-gluing as a service, but the price of such work is often comparable to purchasing a new assembled module of good quality. Therefore, savings in this case may be illusory.

⚠️ Attention: An independent attempt to remove glass without a vacuum chamber is almost guaranteed to lead to the appearance of microcracks in the matrix, which will grow over time.

If the glass is cracked but still works, it is better to apply a protective film and use the phone until the screen is completely replaced. This will prevent splinters from getting inside the case and protect your finger from cuts.

The only case when it makes sense to re-glue the glass is if you have an original premium display, which is very expensive, and it is difficult to find a replacement assembly. In other cases, it is easier and cheaper to buy a new module.

Repair costs and service centers

Repair price Redmi Note 7 depends on where you will change the screen and what part you choose. In authorized service centers, the cost of work will be higher, but you are guaranteed to use original spare parts and maintain the warranty (if it is still valid).

In private workshops prices are much lower. You can find offers to replace the module from 1500 to 3000 rubles, depending on the quality of the spare part. However, it is important to clarify whether the price includes the screen itself or just the labor.

• 🔹 Replacement in service — from 2000 to 4000 rubles (labor + spare parts).
• 🔹 Purchasing spare parts — from 800 rubles (copy) to 2500 rubles (original).
• 🔹 Self-replacement — cost of tools + price of spare parts.

When choosing a service, pay attention to reviews and the availability of a warranty on the work. A good master will give a guarantee on the screen and work for a period of 1 to 6 months. This is important because defective parts may not appear immediately.

Don't chase the lowest price. Cheap screens often have problems with color calibration or sensitivity, which can result in the need for repeated repairs. It’s better to overpay for quality once than to change the screen every six months.

Also keep in mind that in some cases the technician may require additional payment for the complexity of the work if the phone case is severely dented or there is other damage. Always check the final cost before starting repairs.

Common problems after screen replacement

Even after a successful replacement, problems may arise. One of the most common is the lack of sensor response in certain areas. This may be due to poor cable contact or a defective new matrix.

Another problem is color change. If the screen becomes too yellow or blue, try calibrating it in the settings. If this does not help, you may have received a low-quality analogue.

Sometimes after replacement the screen does not turn on. First of all, check the cable connection. If everything is connected correctly, the problem may be with the board or the display itself. In this case, re-diagnosis will be required.

It is also worth paying attention to the operation of the Home button and navigation gestures. If they do not work correctly, the cable may be damaged or the frame may not be installed correctly.

If you notice that your screen is getting hotter than usual, this may indicate a problem with the backlight or power controller. In this case, it is recommended to contact the service for diagnostics.

⚠️ Attention: If the screen starts to “glitch” immediately after replacement, do not try to fix it using software methods. Most likely there is a hardware or installation problem.

In some cases, the problem may be that the new screen is not compatible with the firmware version. Try updating the system or resetting the settings to factory defaults (after making a backup copy).

FAQ: Answers to frequently asked questions

Is it possible to replace the Redmi Note 7 screen yourself without experience?

This is technically possible, but requires care and special tools (hair dryer, picks, screwdrivers). Without experience, there is a high risk of damaging the cables or housing. It is recommended to first watch the video instructions and evaluate your strength.

Which screen is better: original or copy?

The original screen provides better color reproduction, brightness and sensitivity. Copies are cheaper, but may have problems with image quality and sensor performance. For everyday use, it is better to choose a high-quality analog or original.

How long does it take to replace a screen?

The replacement process takes from 30 minutes to 1 hour, depending on the experience of the technician and the type of module (with or without frame). After installing the new screen, the adhesive must dry for at least 24 hours to ensure a secure fit.

What should I do if after replacing the screen does not respond to touches?

Check the connection of the cable to the board. Try rebooting your device. If the problem persists, the screen may be defective or the touchscreen controller may be damaged. Contact the service for diagnostics.

Do I need to change the frame when replacing the screen?

If you buy a module assembled with a frame, then the old frame is removed. If the module does not have a frame, then the old frame must be thoroughly cleaned of glue. Replacement of the frame is recommended if it is damaged or deformed.