How to properly paste the protective glass on Xiaomi Redmi 9A: tips and mistakes

Security glass on Xiaomi Redmi 9A — It's not just an accessory, it's a necessary element to keep the screen from scratching, chipping, and cracking. Even a minor drop in a smartphone can be costly to repair if the display isn't protected. bubbles, dust under glass, mispositioning. In this article, we'll look at how to avoid common mistakes and achieve the perfect result.

Model Redmi 9A It has some very specific features, such as slightly rounded edges and a very different arrangement of sensors, which makes it difficult to install, and we'll go through the material selection, surface preparation and the sticker process from start to finish. We also want to answer the question of whether to trust cheap glass from unknown stores and how to check their quality before buying.

Why it is important to use protective glass on Xiaomi Redmi 9A

Redmi screen 9A It's made of tempered glass, but that doesn't make it invulnerable. Even the keys in your pocket or the accidental fall on the pavement can leave a mark:

• 🔹 Microcracks from daily friction on hard surfaces;
• 🔹 Chops when falling from a height of up to 1 meter (provided that glass is of high quality) 9H);
• 🔹 Loss of touchscreen sensitivity due to scratches;
• 🔹 Screen pollution – glass is easier to clean from grease and dust.

In addition, the original Xiaomi glass for this model costs from 1500 to 2500 rubles, while the protective coating will cost 200 to 600 rubles. The savings are obvious. But it is important to remember that not all glasses are the same. Cheap analogues can have low transparency, distort colors or peel off in a week.

⚠️ Attention: If on your Redmi 9A There are scratches already, the protective glass will not hide them, but only emphasize them, in which case, first polish the screen with a special paste (for example, Displex) or contact the service.

What kind of protective glass to choose for Xiaomi Redmi 9A

There are three main types of glass on the market, and each has its pros and cons. Let's take them in the context of Redmi. 9A:

For Redmi. 9A The best choice will be 3D-hardened 9H. It's a very strong mechanical protection, and it covers the screen completely, including the rounded edges, but keep in mind that these are often complete with adhesives, and they're harder to reglaze if you make a mistake.

When buying, pay attention to:

• 📌 Compatibility with the model – the package must indicate Redmi 9A or M2006C3LG (code);
• 📌 The presence of cutouts for sensors and the speaker - they must coincide exactly;
• 📌 Set - in the set should be napkins, dust collector and a map for extruding bubbles;
• 📌 Manufacturer – reliable brands: Spigen, Nillkin, Olixar.

Preparation Xiaomi Redmi 9A stain-glass

Errors at this point cause 80 percent of installation problems, and even a tiny speck of dust or a greasy finger trail will ruin the result, and preparation includes cleaning the screen, despoiling, and checking indoor conditions.

First, pick the right place. Perfect conditions.

• 🌡️ Air temperature 20–25°C (at lower glue, the bonding is worse);
• 💧 Humidity 40-60% (too dry air contributes to static electricity);
• 🕯️ Good lighting – it is better to use a table lamp;
• 🚫 No drafts (dust can settle on the screen at any time).

Now we're going to clean up. You're going to need:

1. Microfiber wipe (comes complete with glass);
2. Alcohol solution (isopropyl alcohol 70% or wet wipes for electronics);
3. Scotch or dust collector (usually included in the set);
4. Fryer (optional, to remove moisture).

Step-by-step cleaning:

1. Turn off your smartphone and let it cool for 5-10 minutes (a warm screen attracts dust).
2. Wipe the screen with a dry microfiber wipe, removing visible contaminants.
3. Apply the alcohol solution to the napkin and wipe the screen in circular movements, paying attention to the edges.
4. Use tape or dust collector to remove the microparticles, run them around the screen 2-3 times.
5. Check the screen at an angle – if you see at least one hair or motley, repeat the cleaning.

⚠️ Warning: Do not use household alcohol or vodka - they contain impurities that leave divorces. Also avoid paper wipes: they scratch the screen.

The screen is completely cleaned of dust and fat|

The temperature in the room is 20–25°C|

All tools at hand (glass, napkins, map)|

The smartphone is turned off and lies on a flat surface-->

Step-by-step: how to stick a protective glass without bubbles

When the screen is ready, you can start with the sticker, and the rule is, one wrong move, and you have to glue the glass, so you have to be careful and not rush.

Step 1. Positioning the glass

• Take the glass out of the package, holding it by the edges (do not touch the glue side!).
• Remove the protective film from the adhesive layer (usually transparent with the inscription Peel off).
• Carefully apply the glass to the screen, combining the notches for the speaker and sensors.
• If the glass has guide stickers, first glue them to the screen, then put the glass on top.

Step 2: Fixing and removing bubbles

• When the glass is flat, press the center and swipe from the middle to the edges with a card (or bank card), squeezing out the air.
• For the rounded edges of Redmi 9A Use your fingers: gently press the glass around the perimeter.
• If you have small bubbles, leave them for 12 to 24 hours, and many will disappear on their own.

Step 3 Final check

• Turn on your smartphone and check the sensitivity of the touchscreen in all areas.
• Light the flashlight at an angle - if you see dust or large bubbles, the glass will have to be glued.
• Make sure that sensors (light, proximity) are not covered by glass.

Critical error: If the glass is shifted when you press it, don't try to fix it with your hands, because the glue has already grasped. Remove the glass and repeat the process with a new one.

💡

If the bubbles are left after the day, puncture them gently with a needle (don't hurt the screen!) and press the glass with a map. Most bubbles are formed from dust, not air, so this method does not always work.

Common Mistakes and How to Avoid Them

Even the most experienced users sometimes make mistakes, and let's look at the most common ones and how to prevent them.

1. Dust under glass

Reason: Not cleaning the screen enough or working in a dusty room.

• If the dust particles are small (less than 0.5 mm), you can leave them as they are - they will not affect the quality.
• Large particles require gluing. Use a new set of glass.

2.Bubbles around the edges

The reason: improper air extrusion or poor glue quality.

• Warm up the edges with a hair dryer (temperature not above 40)°C) and press the card.
• If the bubbles are left, the glass is defective - replace it.

3. Glass shall not be glued to the corners

Reason: Redmi's rounded edges 9A demand 3D-glass, normal. 2.5D It's not gonna lie tight:

• Buy a glass marked Full Cover or 3D Curved.
• Use the glue. LOCA (liquid optically transparent adhesive for reliable fixation.

4. Loss of screen sensitivity

The reason: too thick glass (more than 0.4 mm) or poor-quality glue.

• Check the sensitivity in the settings → Additionally. → touchscreen.
• If the problem persists, remove the glass and install a thinner one (0.2–0.3 mm).

⚠️ Warning: If the glass starts to "go away" at the edges after 1-2 days, this is a sign of poor-quality glue. These glasses usually last no more than a month.

How to remove old protective glass with Xiaomi Redmi 9A

Over time, the glass wears out, scratches appear, oleophobic coatings are lost, or it simply moves away. To remove it without damaging the screen, follow this instruction:

Method 1: Scotch or thread

1. Stick a piece of tape to the edge of the glass and pull up at an angle of 45°.
2. If the glass is not amenable, put it with a plastic card or mediator.
3. For stubborn glasses, use a thread: slash it under the glass and "saw" back and forth.

Method 2: Thermal method

1. Heat the glass with a hair dryer (temperature to 50)°C) within 1-2 minutes.
2. The glue will soften and the glass will be removed without effort.
3. Don't overheat! Temperatures above 60°C can damage OLED-matrix (in Redmi) 9A used IPS, But overheating is still bad).

Method 3: Alcohol or liquid to remove varnish

1. Apply a few drops to the edge of the glass and wait 30 seconds.
2. The glue will dissolve and the glass will go away. Be careful not to hit the screen.

After removal, be sure to clean the screen of glue residue.

• 🧴 Alcohol napkins;
• 🧽 Soap solution (if water-soluble glue);
• 🧴 Special facilities, for example, 3M Adhesive Remover.

💡

Never use metal objects (knives, screwdrivers) to remove glass – they scratch the Redmi screen. 9A. Even microcracks will be visible in bright light.

Frequently Asked Questions (FAQ)