Display protection is a critical step in starting any modern smartphone, and the Xiaomi Redmi 9 is no exception. The device’s screen is made of glass, which, despite its strength, is extremely vulnerable to falls, bumps and contact with sharp objects in your pocket. A high-quality tread sticker is the only way to keep the matrix intact and avoid costly repairs in the future.
Many users are afraid to take this procedure on their own, for fear of bubbles or dust particles beneath the surface. However, the installation process on Redmi 9 is technically simple and requires no special skills, if you strictly follow the algorithm. The main thing is the correct preparation of the workplace and the accuracy of movements. In this article, we will analyze all the nuances to ensure that the result is perfect the first time.
Choosing the right protective coating for Redmi 9
Before starting the procedure, you need to decide on the type of protection, because the market for accessories is full of different options. For Redmi 9, there are ordinary plastic films, hydrogel coatings and tempered glass. Films are cheap but poorly protect against shocks, while tempered glass takes the hit, saving the display.
It is important to pay attention to the hardness marking, which is usually 9H. This means that the material is resistant to scratches from keys and trifles. Also consider the type of coating: the oleophobic coating repels fat and water, making using the smartphone more comfortable.
- 🛡️ Tempered glass is the best choice for protection against falls and chips, imitates the original screen.
- 💧 Hydrogel – hides small scratches, but is less effective at strong impacts, harder to stick with no experience.
- 📉 Cheap films - quickly lose their appearance, do not protect against shocks, create the effect of "rainbow" on the screen.
⚠️ Warning: When buying glass, make sure it is labeled "Redmi 9" or "Redmi 9/Redmi 9 Prime." 9A redmi 9C They have different geometry and will not fit.
Tools and workplace preparation required
The quality of the sticker is 90% pre-prepared, you need a clean, well-lit surface, free of drafts that can lift dust, and the ideal place is a bathroom where the shower has just been running and all the flying dust has settled, or a kitchen after wet cleaning.
Complete with a quality protective glass for Xiaomi Redmi 9 usually comes a set for installation. If it is not, you will have to prepare the tools yourself.
List of items required:
- 🧼 Wet wipe (alcohol) for degreasing the surface.
- 🌬️ Dry microfibre to remove divorces and villi.
- 🌫️ Sticky tape (scotch) or a special sticker to remove dust.
- 📱 Plastic card or rackel for purging bubbles.
Do not use toilet paper or ordinary tissue wipes to wipe the screen, they leave a microscopic pile that will become visible under the glass. Also, household chemicals with ammonia should not be used, as it can damage the oleophobic layer of the display.
☑️ Pre-testing
Cleaning process of display Xiaomi Redmi 9
The most critical step is to prepare the display surface. Any, even microscopic dust that remains on the screen will create an air bubble that will be noticeable when the display is turned on. First, take a wet wipe from the kit and thoroughly wipe the Redmi 9 screen, removing greasy spots from your fingers and dirt.
Then use a dry microfiber. The movements should be smooth, without much pressure. Your task is to achieve perfect transparency. If you see a wiring after you wipe, repeat the procedure. The cleanliness of the surface directly affects the adhesion of the adhesive layer.
Now, turn on your smartphone flashlight or use a lamp to look at the screen at an angle, and you'll see small particles of dust that you can't see in your normal view, and you'll take a sticky tape and gently apply it to these places to collect dust.
⚠️ Warning: Don't blow on screen with your mouth! The exhaled air contains microscopic droplets of saliva that dry out and form indissoluble spots under the glass.
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Use Scotch not only to remove dust, but also to clean the edges of the protective glass itself before installation if it was exposed.
Step-by-step instructions for glass sticker
When the surface is perfectly clean, there comes a moment of truth: Take the glass over the edges, trying not to touch the adhesive surface with your fingers. Carefully remove the bottom protective film labeled "1" or "Back." Don't put the glass with the adhesive side on the table.
Hold the glass to your smartphone by combining the speaker and camera cutouts with the corresponding elements of the Redmi 9 body. Make sure that the distances from the edges of the glass to the screen frame are the same on all sides. Once the position is selected, smoothly lower the glass onto the display.
The adhesive layer of modern glass has the ability to push air out, and if you put the edges together correctly, the glass will stick to the screen, spreading from center to edge, and if it's slow, you can press the center with your finger slightly, but don't push hard.
Table of possible problems with the sticker and their solution:
| Problem. | Reason. | Decision |
|---|---|---|
| The big bubble in the center | Dust under glass | Carefully lift the edge and remove dust with scotch |
| The glass doesn't fit on the edges. | Incompatibility of cover or marriage | Check compatibility with the cover or replace the glass |
| Rainbow divorces | Bad fit or cheap glass | Stronger to press the edges or replace with quality |
| Lots of small bubbles | Not enough screens are cleaned | Put the map to the edges, the small ones will disappear by themselves. |
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The main secret of success is not to rush at the time of reducing the edges of the glass with the case of the smartphone, giving the glue evenly distributed.
Fixing defects: bubbles and dust
Even skilled craftsmen sometimes have small defects. If you notice an air bubble, try to drive it to the nearest edge using a plastic card wrapped in soft cloth. The movements must be confident, but not overly strong, so as not to damage the matrix.
The speck of dust under the glass is more complicated. If the speck of dust is small and near the edge, you can try to slightly lift the edge of the glass with a knife or needle (very carefully!), put a speck of dust on tape and press the glass again. If the speck of dust is in the center, the risk of damaging the glass when lifted is high.
What if the dust is large and in the center?
Sometimes there are so-called "white rainbows" around the edges, which often indicates that the glass is not fully fitting due to the design of the body or protective cover, in some cases, it helps to remove the cover or use glass with a smaller coating (not on the whole screen).
Polymerization of glue and final verification
Once the glass is glued and the bubbles removed, the process is not considered complete.The adhesive layer takes time to finalize and adhesive to the Xiaomi Redmi 9 display. This usually takes 2 to 24 hours, depending on the ambient temperature and the quality of the adhesive.
In the first hours after the sticker, try not to put the smartphone in a dense case, which can put pressure on the edges and provoke detachment, and avoid getting moisture on the screen on the first day.
Check the sensor across the screen. Swipe your finger around all corners and centers, open the keyboard and make sure there are no dead zones.
⚠️ Note: If you notice that the sensor is only incorrect in certain areas, it may be factory-failed thickness or deformed, in which case it should be replaced.