Xiaomi Redmi Note 8 Pro remains a popular device due to its excellent price-performance ratio, but its glass rear panel and camera module are vulnerable to mechanical damage. Cracks on the lens protective glass not only spoil the aesthetics of the gadget, but can also lead to dust and moisture entering the optical system. As a result, photos become cloudy and focusing begins to work with errors, which is critical for a mobile photographer.
Self-replacement of glass is a real opportunity to save money, as service centers often offer replacement of the entire back cover, which costs much more. The process requires care and care, especially when working with fragile optics and adhesives. In this article, we will discuss in detail all the steps of the procedure, the necessary tools and nuances that will help you perform the repair efficiently and safely for the device.
It's important to understand that the success of the operation depends on the quality of the spare part and the consumables used. Cheap glass analogs can have distortions that will be noticeable in the pictures, especially when taking macro shots. So before you start work, make sure that you have an original or high-quality counterpart of the component on hand.
Diagnosis of damage and selection of components
The first step is to inspect the damage thoroughly to determine the extent of the problem. Often only the outer protective glass cracks, and the camera matrix and lenses remain intact, which is the most favorable scenario for repair. However, if you see cracks in the image itself or mechanical damage inside the module, more complex repairs may be required with the entire camera plume replaced.
When choosing a new glass for the Redmi Note 8 Pro, note the presence of an oleophobic coating that protects against fingerprints. Also critical is the accuracy of the shape, as the slightest mismatch can cause the glass to peel off or interfere with the flash.
⚠️ Note: Using glass of inappropriate thickness can lead to the fact that the camera can not be oriented to infinity or, conversely, to close objects.
To test the quality of the image before buying parts, you can take a few test shots of the current state, which will help you compare the result later and make sure that the turbidity is gone. If you see black spots or blurred areas in the photo that do not disappear after cleaning, it may already have been dust in the module.
Tools and workplace preparation required
You can't have a quality repair without a specialized tool that can gently dismantle old components, you'll need a dryer or thermostole to soften the glue, a thin mediator or a plastic blade to open the case, and you'll also need a suction cup to lift the glass, tweezers with thin noses and a set of screwdrivers, including a cross PH00.
Pay special attention to the adhesive composition, as it ensures tightness and fixation of the glass. It is best to use a special adhesive B-7000 or E-8000, which remains elastic after drying and allows you to re-dry if necessary. It is not recommended to use superglue or cyanacrylate compounds, as they become brittle and can damage the plastic frame on the next opening.
☑️ Replacement tools
Prepare the workspace: it should be well lit and softly coated so that the screws that fall are not lost or scratched. Make sure you keep the dust clean in advance, as any speck of dust caught between the lens and the glass will become a noticeable defect in the photos. The ideal option is to do work in a room with minimal air movement.
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Use a magnetic mat or a piece of paper with painted sectors to lay out the screws in order of their extraction – this will save you from confusion when assembling.
The process of disassembling the back cover of the smartphone
Start the procedure with a complete shutdown of the device and removal of the tray SIM-The next step is to carefully warm up the perimeter of the back cover with a hairdryer, moving around in a circle to evenly soften the adhesive layer. The temperature should not be too high so as not to damage the display on the back side or the internal plastic elements.
After warming up, insert the suction cup into the bottom of the back panel and pull up slightly, creating a small gap. Insert a thin plastic mediator into the resulting gap and, as you make sliding movements, gradually pass along the entire perimeter of the body, cutting the glue layer. Act without fanaticism, so as not to damage the fingerprint scanner plume, which can be glued to the cover.
When the lid is fully unstuck, don't lift it up sharply, as it can be plugged in. In the Redmi Note 8 Pro, the fingerprint scanner is integrated into the back, so unplug the plume gently by snapping the connector. You now have access to the insides of the smartphone and the main camera module.
| Phase | Tool. | Time. | Risk |
|---|---|---|---|
| Warming up | Fen | 2-3 minutes | Screen overheating |
| Autopsy | Mediator. | 5 minutes | The plume rupture |
| Shutdown | Tweezers | 1 minute | By the connector. |
Dismantling the camera module and removing old glass
Once you have access to the inside of the body, find the main camera, which is located at the top of the motherboard. The camera module is usually mounted with screws or sits tightly in the seat. In some cases, a metal frame or protective plate may be installed around the camera, which also needs to be removed by twisting the corresponding screws.
To remove broken glass, use tweezers or a thin needle, gently putting on the edges of the fragments. If the glass is held on glue, you can slightly warm the area around the lens with a hairdryer, but very carefully so as not to touch the matrix itself. Try to remove the glass whole so that small fragments do not fall into the body or onto the lens.
What to do if the glass is crumbled into dust?
After the glass is physically removed, you must carefully clean the seat of glue residues. Use a wooden toothpick or a plastic blade dipped in isopropyl alcohol. Metal tools are not recommended to use so as not to scratch the plastic of the case or the lens itself.
⚠️ Note: Do not press the center of the lens when cleaning, as this may displace elements of the internal optics or damage the stabilizer.
Installation of new glass and final assembly
Before installing the new glass, blow the chamber again with compressed air to make sure there are no dust particles. Apply a thin layer of B-7000 glue on the ends of the seat or on the glass itself, if the design implies. Avoid getting glue on the optical part of the lens, as it will be almost impossible to remove it from there without disassembling the module itself.
Carefully install the new glass, aligning it with the edges of the hole. Press it with your finger for a few seconds for primary fixation. Make sure the glass sits flat and does not protrude above the level of the body. If the design involves the presence of a sealing rubber, check its integrity and correct stacking.
Now you can start to reverse assemble the device. Connect the fingerprint scanner plume to the motherboard and check it without putting the lid on permanently. Turn on the phone, take a test shot to make sure the image is clean and the focus is working properly. If everything works correctly, apply a new layer of glue to the frame of the case and press the back cover.
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The glue for fixing the lid should dry under load (rubber or load) for 1-2 hours to ensure maximum tightness.
Typical mistakes and expert advice
One of the most common mistakes is to neglect to clean the optics before installing the glass. Even a microscopic villi or speck of dust will create a black spot in the photo that will be visible in all the pictures. Always conduct a visual inspection through the flashlight at an angle to identify any contamination on the matrix or internal lens.
Another common problem is using too much glue, and excess glue can squeeze in and get into the zoom or autofocus mechanism, blocking their operation, and if it does, you need to immediately disassemble the device and clean the mechanism before the glue freezes.
- 🔍 Always check the operation of all cameras (width, macro, TV) after assembly.
- 🧹 Use a dust pear for final cleaning before closing.
- ⏳ Let the glue dry for at least 30 minutes before active use.
Remember that after replacing the glass and re-gluing the case, the smartphone may lose some of its moisture protection, even if it was declared by the manufacturer. Try not to immerse the device in water and do not use it in high humidity conditions at first after repair.