Replacement of curtains on Xiaomi Redmi 9T: Full guide to photo and video

Xiaomi Redmi 9T — A popular smartphone with a good value for money, but over time, the protective glass (curtain) on its screen can crack, scratch or peel off. Replacing the curtain seems like a simple procedure, but without proper preparation and tools, you can damage the display or leave dust under the glass. In this article, we will discuss all the stages of replacing the glass from choosing a new glass to the final check, and also tell you how to avoid typical errors.

It is important to understand that the curtain on the Redmi 9T It's a thin protective glass that sticks over the screen and prevents mechanical damage, and if your smartphone has cracks on the top layer, and the sensor and the picture work normally, the problem is the curtain. But if the screen does not respond to touch or colored stripes appear, most likely, the display module itself is damaged, and then you will already need professional repairs.

We've collected some proven advice from service center wizards and users who have successfully changed the curtain themselves, and at the end of this article, you'll find answers to some of the most common questions and a list of reliable parts suppliers.

1.How to determine if it's time to change the curtain on Redmi 9T

Cracks on the screen don't always mean you have to run to the service center, but here are the main signs that the problem is with the security glass, not the display:

• 🔍 Small spider webs or scratches on the surface that do not interfere with the sensor, but spoil the appearance.
• 💥 Deep cracks that do not extend to the image (below them you can see a normal picture).
• 🧲 Unstuck corners of glass – often after falling or prolonged use.
• 🖐️ The sensor works without complaints, but the glass prevents the slipping of the finger (hackles, roughness).

If you observe the following symptoms, replacing the curtain will not help - you need a diagnosis of the display module:

• 📵 The screen does not respond to touches in some areas.
• 🎨 There were colorful vertical stripes or spots.
• 🔄 Image flickering or spontaneously flipping.

⚠️ Attention: If the cracks on the curtain are deep and reach the edge of the screen, when replaced, the glass may split into small fragments, in which case it is better to pre-paint the screen with tape to hold the fragments, or entrust the work to a professional.

It is also important to note that Redmi 9T used 2.5D-It's a glass with rounded edges, and it makes it difficult to replace it, because the new glass has to be perfectly the same as the original glass, and the poorly glued glass will move around the edges and collect dust.

2. Which glass to choose Xiaomi Redmi 9T: review

The quality of the protective glass depends not only on the appearance, but also on the durability of the repair. 9T:

For Redmi. 9T It is better to choose glass with strength 9H And it's oleophobic (repels fat and prints) and you can see that there's adhesive dust tape in good kits, wipes for cleaning, and positioning stickers.

Where to buy:

• 🛒 AliExpress is a big choice, but a long wait (look for sellers rated above 98%).
• 🏬 Local parts stores (e.g. Fix Price Repair, Mobile Man) – you can touch before buying.
• 🌐 Official Xiaomi partners (for example, Mi Store) – quality guarantee, but the price is higher.

💡

Before buying, check if the glass is suitable for Redmi. 9T (model M2010J19SG). Sometimes sellers confuse it with Redmi 9 or Redmi Note. 9T, screen-size.

3. Tools for replacing curtains: what you will need

Without the right tools, replace the curtain with a Redmi 9T This is the minimum set you'll need:

• 🔧 Plastic mediators or shoulder blades (2-3 pieces) - for slashing glass.
• 🧴 Isopropyl alcohol (90%+) — screen-cleaning.
• 🧻 Whipless wipes (microfibra) - for cleaning.
• 💨 Compressed air cylinder or vacuum cleaner - to remove dust.
• 📏 Positioning stickers (usually complete with glass).
• 🔥 Dryer or infrared lamp - to soften glue.
• 🧲 Magnetic substrate or tweezers – to hold small fragments.

Also useful:

• 📱 Screen protection film (temporary, for the period of replacement).
• 🎯 Bubble level - to check the smoothness of gluing.
• 🔦 Bright lamp or flashlight – to see dust before the final sticker.

⚠️ Warning: Do not use metal tools (knives, screwdrivers) - they can scratch the display. Also avoid acetone and solvents for cleaning: they will damage the oleophobic coating of the screen.

If you don’t have experience, you can buy a ready-made replacement kit (for example, from Baseus or Olixar), which has everything you need, including instructions, and costs about 800-1 500 rubles.

4. Step-by-step instructions: how to remove the old curtain

This is the most critical step, and if you're not careful, you can damage the display or leave shrapnel underneath.

Step 1. Heating the glass

Turn on the dryer at the minimum temperature (or use an IR lamp) and warm the screen evenly for 2-3 minutes. This will soften the glue. Keep the dryer at a distance of 10-15 cm so as not to overheat the phone.

Step 2: Breaking glass

Take a plastic mediator and gently tuck the glass in from any angle. If the glass is cracked, start with the largest shard. Don't push hard, you better gradually loosen the glass as you move around the perimeter.

Step 3: Removal of fragments

When most of the glass is removed, there's fine shards and glue left on the screen, removed with tweezers or magnetic substrates, then wipe the screen with a napkin soaked in isopropyl alcohol.

Step 4. Final cleanup

Use a sticky tape (usually complete with glass) to remove any glue and dust. Walk around the screen 2-3 times. Then blow the screen with compressed air and wipe with a dry lilaless wipe.

⚠️ Attention: If you remove the glass, you have white patches on the screen, they're glue marks, you have to remove them with alcohol, otherwise the new glass will fall unevenly, if the stains don't wipe off, you've absorbed the glue into the oleophobic coating, and you'll have to polish the screen with a special paste (e.g. PolyWatch).

5.Installation of new glass: the secrets of the perfect sticker

Now, the hard part is sticking new glass, and it's about accuracy and patience. Here's a step-by-step algorithm.

Step 1. Checking the new glass

Take the glass out of the package and check:

• 🔍 Are there any chips or cracks.
• 📏 Whether the shape matches the original (especially roundings at the edges).
• 🧲 Is there a protective film on the glue side (it should be removed only before the sticker!).

Step 2. Positioning

Use positioning stickers (which come with them) to fix the glass on the screen, which will help to avoid bias, and if you don't have stickers, you can gently attach the glass and take a picture of it on the phone, so it's easier to align.

Step 3: Applying glue

If your glass comes with the glue already applied (the most convenient option), just remove the protective film.

1. Put the glue on (LOCA or UV-glue) on the screen in thin layer.
2. Make sure you have a plastic card (like a credit card).
3. Let the glue dry a little (1-2 minutes).

Step 4. Sticking

Carefully apply the glass to the screen, starting at the top (where the speaker is located). Then gradually press it from the center to the edges, squeezing out air bubbles. Use a soft roller or napkin to press evenly.

Step 5: Drying

If you've used UV-glue, illuminate the glass with an ultraviolet lamp for 2-3 minutes. For ordinary glue, it is enough to leave the phone under the press for 12-24 hours (for example, put a heavy book on top of it).

💡

The most common mistake is to rush, and if you don't let the glue dry properly, the glass will move away from the edges in a few days.

6. Common mistakes and how to avoid them

Even experienced craftsmen sometimes make mistakes when replacing curtains, and here are the most common problems and ways to prevent them:

Another common problem is the rainbow effect, which occurs when:

• The glass is too thick or thin.
• The glue is uneven.
• Moisture got under the glass.

If you get a rainbow, you'll have to reglaze the glass, so to avoid that, buy 99 percent optical transparency glass and check for compatibility with the Redmi. 9T.

7. Checking the result and caring for the new glass

After you change the curtain, you need to make sure it's done right.

• 🖐️ Sensor Sensitivity – Take the touch test in settings (Settings) → The phone. → Equipment test).
• 🔍 Absence of bubbles and moulds - illuminate with a flashlight at an angle.
• 🎨 Color Transmission – Are there any distortions or iridescent divorces.
• 🔊 The speaker's work - sometimes the glue flows into the speaker's hole, muffling the sound.

If everything is fine, then you need to take good care of the new glass:

• 🧴 Do not use aggressive detergents (such as Domestos or Whiteness).
• 🧽 For cleaning, an alcohol solution (70%) or special wipes for equipment are suitable.
• 🛡️ If the glass is not oleophobic, apply it separately (sold as a spray).
• 📱 Avoid falling - even 9H-glass can crack when hit hard.

⚠️ Warning: The first 24 hours after replacement is not recommended to use the phone - the glue should completely dry.

Frequent Questions (FAQ)