How to change the screen on the phone Xiaomi Redmi 6A

Modern smartphones, despite the use of strong tempered glass, remain vulnerable to falling on hard surfaces. Xiaomi Redmi 6A, popular for its availability and reliability, was no exception to this rule. Broken display or the appearance of colored stripes on the matrix are critical problems that make using the gadget impossible or extremely uncomfortable.

Replacing the screen on Redmi 6A is a task that even a person without deep knowledge of electronics can do if you act carefully and follow proven algorithms. The design of the device is relatively simple, but requires attention to detail, especially when working with adhesive joints and plumes.

In this article, we will take a look at the entire process, from the preparation of the workplace to the final health check, learn what tools will be required, how to properly disconnect the battery and why original parts are preferable to cheap ones.

Diagnosis of malfunction and selection of components

Before disassembling, you need to clearly define the nature of the damage. If there are cracks on the surface, but the image remains clear and the sensor responds to touch, then probably only the external touchscreen is damaged. However, in modern smartphones, including the Redmi 6A, the touchscreen and the matrix are most often soldered into a single module.

In situations where there are black spots, stripes, or it is completely gone, but the phone is making sounds and vibrating, it is a damage to the matrix. In both cases, a quality repair will require replacing the entire display module assembly. Buying a separate matrix or glass is not advisable, because it requires complex equipment for gluing and calibration.

⚠️ Note: When buying parts, pay attention to the type of connection of the plume. 6A a specific connector is used, and incompatible modules may simply not stand in place or be determined by the system.

There are three main types of modules in the parts market, and it's important to understand the difference between them: image quality and device life depend on which option you choose to install.

• 🔴 OEM (Original) - fully corresponds to factory characteristics, has the correct color reproduction and thickness of glass.
• 🟠 High Copy is a high-quality analogue that can slightly inferior in brightness, but is fully compatible in geometry.
• 🟡 Low Copy is a cheap option with low brightness, poor viewing angles and often incorrect sensor performance.

Choosing cheaper copies often leads to the sensor becoming “glutty” after a few months of use and the colors being distorted, and the savings on spare parts are false in this case, since it will take as long to re-disassemble the phone as it will take to repair the original.

Tools and workplace preparation required

You can't repair a phone without proper preparation, you'll need not only a new display module, but also a set of specialized tools, and trying to disassemble it with a knife or a sewing needle can damage the internal components or the body of the device.

Organize the workspace so that it is well lit. Small screws and plumes are easy to lose on a dark surface, so it is recommended to use a light table or a special mat. It is also important to exclude the presence of static electricity, which can damage electronics.

To work with Redmi 6A, it's critical to have a suction cup on hand, which allows you to gently lift the back cover without damaging it, and if you don't have a suction cup, you can use a thin line or a special string to cut the glue, but that requires more skill.

Special attention should be paid to the source of heating, a technical dryer allows you to adjust the temperature of the air flow, which is safer for plastic than using an open fire or a household hair dryer, which may not give the desired temperature.

💡

Prepare a magnetic mat or a piece of paper with a drawn diagram, where you will lay the screws in order of their extraction, which will save you from confusion when you build.

The process of dismantling the back cover and battery

The beginning of any Xiaomi smartphone disassembly is a power outage. In the case of the Redmi 6A, where the battery is non-removable, the first step after removing the back cover should be to disconnect the battery plume from the motherboard. Ignoring this rule can lead to a short circuit when accidentally touching the metal tools of the board contacts.

The Redmi 6A back cover is glued around the perimeter, and to remove it, you need to warm the edges of the body with a hair dryer to about 80-90 degrees. The plastic should be warm to the touch, but not melt. After heating, insert the suction cup into the bottom of the lid, pull the edge off, and insert a plastic blade into the resulting gap.

⚠️ Warning: Do not insert tools too deep inside the case. 3-4 mm from the edge are plumes and internal components, which are easily damaged by the sharp edge of the shoulder blade.

Carefully use a blade along the perimeter, cutting the adhesive layer. Be especially careful in the area of the main camera module and fingerprint scanner. Once all latches are free, remove the lid and put it in a safe place.

The next step is to dismantle the battery. In the Redmi 6A, it's also attached to double-sided tape. Under the battery, there's often a plume of the lower speaker, so you need to snag the battery on the opposite side (on the top of the phone) or very carefully on the sides, trying not to damage the plume connector.

Removing the old matrix and installing a new one

Once the battery is removed, you will have access to the motherboard and the lower board, and to replace the screen, you must completely dismantle the metal frame on which all the components are attached, the most time-consuming part of the process, requiring many screws of different sizes to be twisted.

Watch the length of the screws carefully. Redmi 6A uses screws of different lengths to attach the board and the display frame. Swirling a long screw into a short hole can lead to a failure of the board and the smartphone will fail forever.

Sequence of action:


1. Unscrew the screws of the metal frame around the chamber and connectors.




2. remove the metal protection of the motherboard.




3. Disconnect the plumes of the display, touchscreen and front camera.




4. Unscrew the screws holding the display module in the frame.




5. Carefully separate the old module, warming the edge of the frame with a hairdryer.

The old display module in Redmi 6A is glued to a metal frame quite firmly. It is recommended to warm the front of the phone with a hairdryer (careful not to overheat the matrix if it is still intact, or just warm the frame) to soften the glue. Use a suction cup and a spatula to separate the module.

You need to check the new display before you install it. Connect the plumes to the board without sticking the module, and start the phone. Check the sensor at all corners of the screen, whether there are broken pixels and the front camera. If everything works correctly, you can start the final assembly.

Comparison of characteristics of display modules

When choosing a part, it is important to focus not only on price, but also on specifications. Different screen manufacturers can use different technologies, which affect power consumption and image quality. Below is a table that helps distinguish a quality module from a low-grade one.

As you can see from the table, the difference in brightness can be significant: in the sun, a cheap screen will become almost unreadable, while the original will retain good visibility. It is also worth noting that the thickness of the frames in cheap copies often does not coincide with the factory, which can lead to the projection of the screen above the body or the formation of gaps.

When you install a high-quality copy, you may not notice the difference in everyday use. However, when you watch a video or read text in bright light, the matrix drawbacks can manifest. Viewing angle is another parameter that suffers from budget counterparts: when you look from the side, the picture can invert or blacken.

Assembly and final performance check

The final step is to assemble the device, and before you screw all the screws back in, make sure that all the plumes are packed into their channels and not clamped, especially the plume of the lower speaker that runs under the battery, and any clamping can cause the contacts to break and the network to lose sound or signal.

The new display module and the back cover are best adhesived with a special B-7000 or T-7000 adhesive, apply a thin strip of glue around the frame, press the parts and lock them with stationery gums for 15-20 minutes, which will ensure reliable sealing and dust protection.

⚠️ Warning: Do not use superglue (cyanacrylate) It releases fumes that settle on the camera lenses and sensors, making them cloudy, and also makes re-disassembly almost impossible without damage.

After drying the glue, turn on the phone and conduct a comprehensive test. Check the proximity sensor (when you bring the screen to the ear, the screen should go out), vibration, loudness of the speakers and charging through the device. USB-If all functions are working normally, the repair can be considered a success.

💡

Quality assembly is more important than speed, and careful stacking of the plumes and proper application of glue ensures that the phone lasts a long time and does not require re-intervention anytime soon.

Frequently Asked Questions (FAQ)