The security glass on Xiaomi Redmi is not a luxury, but a necessity: the smartphone screen is vulnerable to scratches, chips and even cracks from unsuccessful falls. But many users face the problem: after installing it on its own, bubbles, dust or even it disappears after a day. Why does this happen? It's about the small things: improper surface preparation, haste or use of poor-quality materials.
In this article, we'll take a step-by-step video guide to sticking the glass on the Redmi Note 12/11/10 Pro, Redmi A2, Redmi 13C and other defect-free models, and you'll learn what tools you need, how to avoid errors, and what to do if the glass has already unstuck, and at the end, answers to frequent questions and life hacks from service center masters.
What kind of glass to choose for Xiaomi Redmi?
Not all windows are equally useful. Cheap AliExpress products are often low-transparency, microcrack quickly, and poorly adhesive.
- 🔍 Thickness: optimally - 0.2-0.33 mm Thin glasses (less than 0.15 mm) are worse protect against impacts, and thick (more than 0.5 mm) worsen the sensitivity of the screen.
- 🛡️ Hardness: look for labeling 9H — This is the maximum protection against scratches (on the Mohs scale).
- 📱 Compatible with the model: Redmi Note 12 Pro+ redmi 13C You need different glasses because of the differences in the notches under the camera and speaker.
- 💧 Oleophobic coating: Must repel fingerprints. Check this by swiping your finger at the sample in the store.
Among the proven brands are Spigen, Nillkin, Belkin and original Xiaomi accessories. From budget options, Tempered Glass from Baseus has proven itself well.
⚠️ Warning: Don't buy glass that says "Universal" or "All models"; it rarely fits perfectly and often leaves the edges of the screen unprotected.
Preparation for installation: what will be needed?
Before you glue the glass, prepare the workplace and tools.
- 🧴 Alcohol wipes (or isopropyl alcohol) + lamb).
- 🧲 Magnetic positioning frame (combined with many glass windows).
- 💨 A compressed air cylinder or a small pear to remove dust.
- 📏 Plastic card (for squeezing bubbles).
- 🔦 Bright lamp or flashlight (to see dust on the screen).
If there is no frame in the glass, use Scotch: paste two strips on the cross-screen to mark the center, which will help to place the glass evenly.
Remove the cover and film from the screen |
Turn off the phone (so that touch is not disturbed)|
Wash hands with soap (fat from the fingers will get on the screen) |
Close windows (dust is the main enemy of the ideal installation)-->
Important: Do not use wet eyewear wipes or household chemicals – they leave stains that will worsen the grip of the glass with the screen.
Step-by-step instructions: how to glue glass without bubbles (with video)
The most reliable way is to follow the video instructions, but we will analyze the process textually, taking into account the nuances for Xiaomi Redmi.
Step 1. Screen cleaning
- Wipe the screen with a dry lilaless cloth to remove visible dirt.
- Moisten the napkin with isopropyl alcohol (or use a ready-made alcohol napkin) and thoroughly wipe the screen, paying attention to the edges and cutout under the front camera.
- Hold the phone up to the light at an angle, so you can see the remaining dust, remove it with compressed air or tape.
Step 2: Positioning the glass
- If there is a magnetic frame, install it on the screen - it will help to fix the glass evenly.
- Remove the protective film with the adhesive side of the glass (only on one side!).
- Carefully apply the glass to the screen, starting at the top (where the speaker is).
Step 3: Bubble removal
- Take a plastic card and soft movements from center to edge squeeze out the air bubbles.
- If the bubble does not go away, gently lift the glass from one edge and re-attach it.
- For UV-glue glasses (they need to be dried with an ultraviolet lamp), this step is skipped - the bubbles will disappear after polymerization.
🎥 Video instruction for Redmi Note 12 Pro (similar to other models):
Insert iframe from YouTube here (example: video from Xiaomi Today channel with 2 million views)
⚠️ Warning: If the glass is pressed (bends and moves) after installation, you have not pressed it against the screen hard enough, and you can fix this by reheating the glass with a hair dryer (not higher than 50).°C!) and crushing it with a book for 10 minutes.
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If the glass is peeled off at the edges after a week, don't be in a hurry to change it. Often, a drop of cyanoacrylate glue (superglue) around the perimeter helps. Apply it thinly, press the glass and remove the excess with a napkin after 5 minutes.
Common Mistakes and How to Avoid Them
Even experienced users sometimes make mistakes. TOP-5 problems and solutions:
| Mistake. | Reason. | How to fix it |
|---|---|---|
| Bubble under glass | Dust or air under the glue layer | Re-glue the glass, pre-cleaning the screen with alcohol |
| The glass is moving away at the edges. | Poor quality glue or greasy marks on the screen | Warm up with a hair dryer and press; if it does not help, replace the glass |
| Rainbow divorces | Cheap glass with poor quality oleophobic coating | Only replacement with quality glass (e.g. Spigen Glas.tR) |
| Poor screen sensitivity | Too thick glass or improper installation | Choose glass thinner than 0.3 mm and re-adhesive |
| Cracks in a month | Low glass hardness (6H instead of 9H) | Buy 9H-labeled glass and check certificates |
Especially often, the Redmi Note 10 Pro and Redmi 12 are problematic because of their curved edges, so choose 2.5D-edged windows that are more like the display.
What to do if the glass is cracked?
How to remove old glass without damaging the screen?
If the glass is cracked or unstuck, it must be carefully removed.Do not use a knife or metal objects - they will scratch the display!
Here's the safe way:
- Plug a wide scotch (for example, paint) on the glass and press firmly.
- Pull the scotch at a sharp angle - the glass should move away with it.
- Remove the glue residues with alcohol or a special means to remove stickers (for example, 3M Adhesive Remover).
For stubborn glasses, you can use a thread or line:
- Tuck the glass from the corner with a plastic card.
- Put a thread under it and "saw" it back and forth until the glass moves away.
⚠️ Attention: If there are still glue pieces under the glass, do not rub the screen with force - so you will damage the oleophobic coating of the display.
UV-Glass: Is it worth overpaying?
UV-glasses (with ultraviolet glue) are 2-3 times more expensive than conventional, but give several advantages:
- ✅ Perfect transparency – no bubbles even when uneven installation.
- ✅ Best protection – the glue polymerizes and holds the glass as a monolith.
- ✅ Longer serve - do not move around the edges with time.
But there are downsides:
- ❌ Required. UV-lamp (costs from 500) ₽).
- ❌ It is difficult to remove without damage - you will have to warm the hair dryer.
- ❌ Not all models support the Redmi. A2 UV-glass is hard to find.
Conclusion: If you are willing to spend 1,000-1500 ₽ glass-glass + lamp, UV-For budget models (Redmi) 10A, Redmi 9C) fairly 9H-glass.
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UV-They're good for people who drop their phones a lot or want maximum protection. 9H-glass-glue.