Smartphone Xiaomi Redmi Note 7 remains one of the most popular budget devices on the market, but its glass body and lack of shock protection make the screen a weak point. Broken glass or a non-working matrix turns a convenient gadget into a useless piece of equipment, requiring immediate intervention. Many owners are faced with a dilemma: entrust the restoration to professionals or try to replace the display themselves to save money.
Repair procedure Redmi Note 7 has its own technical features that distinguish it from other models in the line. Incorrect selection of spare parts or violation of dismantling technology can lead to loss of sealing of the housing and moisture penetration into the device. In this article we will analyze in detail all aspects of replacement, from choosing the type of module to the intricacies of gluing the frame, so that you can make an informed decision.
Types of modules and their differences for Redmi Note 7
Before starting any manipulations, it is necessary to clearly understand which component has failed: only the top glass, the matrix, or the entire module assembly. In service practice, there are three main options for spare parts, each of which has its own performance characteristics and price.
The most expensive, but high-quality solution is the original module Original AMOLED, which was installed at the factory. It provides perfect color reproduction, deep blacks and high sensor sensitivity. However, it is now extremely difficult to find it on sale, and the cost often exceeds the price of the smartphone itself on the secondary market.
More accessible are analog modules, which are divided into two subclasses: Super AMOLED and TFT. Super AMOLED modules are as close as possible to the original in color, but may differ in viewing angle. TFT screens are significantly cheaper, but have faded colors, low brightness and often suffer from the "ghost touch" problem.
- 🔥 Original - ideal quality, but high price and shortage.
- ⚡ Super AMOLED - the golden mean, close to the original.
- ❄️ TFT - a budget option with noticeable losses in image quality.
It is important to consider that the touch layer (touchscreen) in most cheap analogues is inextricably soldered to the matrix, so replacing only the glass in a home workshop is often impossible or economically infeasible.
Preparation for repair and necessary tools
If you decide to replace the display Xiaomi Redmi Note 7 yourself, you will need to prepare a workplace and a special set of tools. An ordinary screwdriver and knife will not help here, since the smartphone body is held together with a powerful adhesive layer, and the internal components require delicate handling.
You will definitely need a hair dryer or heat gun to heat the glue around the perimeter of the lid. You also need plastic picks, a glass suction cup and a set of thin screwdrivers for Phillips screws. Without these devices, the risk of damaging the case or breaking the new matrix during opening is extremely high.
- 🛠️ Hairdryer - for uniform heating of the adhesive layer to 80-90 degrees.
- 🔧 Sucker - to create a gap between the back cover and the frame.
- 🧽 Isopropyl alcohol - for cleaning glue residues from the frame.
- 📋 Magnetic mat - so as not to lose small screws.
Do not forget to back up all data on the device, as during the repair process there is a high probability of accidental power failure or damage to memory cables. It is also recommended to disconnect the battery immediately after opening the case to avoid short circuits.
- Original
- Super AMOLED (Analog)
- TFT (Budget)
- I don't know, please advise
Step-by-step instructions for dismantling and installation
The replacement process begins with heating the back cover, since it is fixed at the factory with glue. Heat the perimeter of the back panel for 3-5 minutes, being careful not to overheat the camera and battery. Use a suction cup to pull up the glass and carefully insert the plastic picks into the gap.
After removing the back cover, unscrew the four screws securing the battery and carefully peel it off. This is a critical step: never puncture the battery and do not bend it, as this may cause a fire. Disconnect the cables from all connectors, including the display and touchscreen, using a plastic spudger.
☑️ Procedure for disassembling a smartphone
Remove the old display module after preheating its attachment to the frame. Carefully disconnect the cables from the system board. Clean the frame of old glue using alcohol and a spatula, achieving a perfectly flat surface for the new module.
Installing a new display is done in the reverse order. Apply a thin layer of new adhesive or double-sided tape to the frame. Press the module down, making sure it sits flat, and connect the cables until they click into place. Secure the battery and assemble the case by tightening the screws.
What to do if the cable is not inserted?
If the cable does not fit into the connector, do not force it. Check if the contacts on the board or the cable itself are bent. Often the problem is solved by slightly twisting the connector or cleaning the contacts with alcohol.
Frequent problems and nuances of operation after repair
Even if you successfully replace the module, you may encounter a number of problems specific to Redmi Note 7. One of the most common is uneven backlighting or the appearance of glare at the edges of the screen. This often happens when using low-quality analogues or when the module is glued incorrectly.
Another common problem is the loss of sealing of the housing. If you did not use special glue for assembly, the smartphone is no longer protected from dust and moisture. A “floating” touchscreen may also occur when touches are registered with a delay or spontaneously.
⚠️ Attention: If you see stripes or flickering after replacing the screen, try unplugging and reconnecting the display cable. Often the problem lies in poor contact, and not in a malfunction of the matrix.
Sometimes a situation arises when the new screen works, but the charging connector stops charging the device. This may be due to damage to the protective film on the board or movement of components during assembly. In such cases, re-diagnosis of the board is required.
The build quality and cleanliness of the frame surface directly affect the durability of the new screen and the absence of glare.
The cost of repairs and the choice between service and DIY
Display replacement prices vary depending on the type of module selected and the repair method. In service centers, the cost of work consists of the price of the spare part and the wages of the technician, which often increases the cost of the process by 1.5-2 times compared to purchasing the part yourself.
Replacing it yourself saves money, but requires time and skill. You only pay for components and tools, but you run the risk of permanently damaging the device. With the service, you receive a guarantee for work, but the price may be unreasonably high for a budget smartphone.
| Type of repair | Cost of spare parts | Cost of work | Final price |
|---|---|---|---|
| Self-paced (TFT) | 1500-2000 rub. | 0 rub. | from 1500 rub. |
| Service (TFT) | 1500-2000 rub. | 1500-2000 rub. | 3000-4000 rub. |
| Standalone (Super AMOLED) | 2500-3500 rub. | 0 rub. | from 2500 rub. |
| Service (Super AMOLED) | 2500-3500 rub. | 2000-2500 rub. | 4500-6000 rub. |
The decision to choose a repair method should be based on your technical skills and the value of the device. For Xiaomi Redmi Note 7 It often makes sense to give preference to high-quality analogues, since the cost of original repairs can be comparable to buying a new phone.
Before purchasing a display online, be sure to check with the seller whether the module comes complete with a frame or just glass with a matrix. This will save you time on assembly.
Warranty and post-repair period
After replacing the screen, it is important to follow the operating mode so that the new module takes root and serves for a long time. The adhesive composition gains full strength within 24-48 hours, so during this period it is not recommended to press hard on the screen or subject the smartphone to vibrations.
If you contacted the service, check the terms of the warranty. It usually ranges from 14 days to 3 months and only applies to hidden defects that were not caused by your fault. In case of self-replacement, the warranty for spare parts is valid according to the conditions of the store where you purchased them.
- 🛡️ Check — immediately test the touchscreen, brightness and touch buttons.
- 🌡️ Temperature - Avoid overheating and hypothermia in the first days.
- 💧 Moisture — do not use the device in the rain without a cover.
Remember that even high-quality repairs will not restore the factory strength of the case. The use of protective glass and a case will be a must to extend the life of the repaired device.
How to check the quality of a new screen?
Turn on the white background to maximum brightness and look for any highlights. Then turn on a black background in the dark to check that the backlight is even and free of dead pixels.
FAQ: Frequently asked questions
How long does it take to replace a display?
On average, the procedure takes from 40 minutes to 1.5 hours, depending on the experience of the technician and the complexity of dismantling the old glue. Do-it-yourself repairs may take longer due to the need to study instructions.
Is it possible to replace only the display glass?
Theoretically possible, but Redmi Note 7 this is technically difficult and economically unprofitable. The cost of equipment for re-gluing glass exceeds the price of a new assembled module, so craftsmen almost always change the entire screen.
What should I do if the screen works, but the touchscreen does not respond?
Most likely, the problem is a poor-quality contact of the cable or a malfunction of the touchscreen itself. Try reconnecting the cable. If this does not help, the entire module may need to be replaced.
Does replacing the screen affect the fingerprint function?
No, if the replacement is carried out correctly and the scanner cable located on the back cover or in the frame is not damaged. B Redmi Note 7 The scanner is located on the back panel, so it is not affected when replacing the screen.
⚠️ Attention: Replacing the display on Redmi Note 7 without professional equipment often leads to a leak in the seal, which can allow moisture to get inside and cause corrosion of the motherboard.