Xiaomi Redmi Note 7 is one of the most popular smartphones in the budget segment, but its Gorilla Glass 5 screen is far from immune to scratches and chips. Even keys in your pocket or a bad fall can leave traces that spoil the appearance and reduce tactile sensation. Protective glass is a simple and effective way to prevent damage, but its installation requires accuracy: the slightest speck of dust or improper alignment will lead to bubbles that spoil the entire result.
In this article, you will find step-by-step instructions tailored to the features of the Redmi Note 7 (including the location of sensors and the notch under the camera), tips for choosing glass (2D, 2.5D, 3D), and unique tricks for perfect installation without specialized tools. We will also analyze common mistakes – for example, why glass can peel at the edges a week after sticking and how to avoid this.
1.What kind of protective glass to choose for Xiaomi Redmi Note 7
Not all glasses are equally useful. The Redmi Note 7 has three critical dimensions: edge shape, thickness and coating (2.5D), so flat-glass (2D) It won't cover them completely, leaving them vulnerable to scratches — 2.5D or 3D-glass that repeats the curves of the display.
By thickness, focus on the range of 0.2-0.33 mm. Too thin glasses (less than 0.2 mm) are worse protect against impacts, and thick ones (more than 0.4 mm) can interfere with the sensor and worsen sensitivity. Pay attention to the presence of oleophobic coating - it repels greasy fingerprints and facilitates care.
- 🔹 2D-glass: cheap, but only covers the flat part of the screen, suitable if you use a case with high sides.
- 🔹 2.5D-glass: repeats the rounding of the screen, but does not go to the side edges.
- 🔹 3D-glass: fully covers the screen, including the curves, expensive, but provides maximum protection.
- 🔹 Glass with a "drop": has a cutout for the front camera. For the Redmi Note 7, it is only relevant if you use glass without covering the sensor area.
Manufacturers often specify compatibility with a particular model, but it is better to check the glass size: for the Redmi Note 7, they should be 158.3 × 75.6 mm (with curvatures taken into account). From proven brands, you can recommend Spigen, Nillkin or Belkin - their glasses have good adhesion and do not turn yellow over time.
Preparation of the smartphone: what to do before installation
The quality of training is responsible for 90 percent of your success. The first rule is: work in a clean, well-lit room, ideally next to a window or under a bright lamp, so you can see even the smallest particles of dust, turn off the air conditioner or the fan: air currents can bring new pollution.
You'll need:
- 🧴 Alcohol wipes (70–90% isopropyl alcohol) or microfibre tissue + spray-drink.
- 🧲 Scotch or sticky tape to remove dust (paint scotch can be used).
- 💡 Bright light source (lantern or lamp) to check the screen cleanliness.
- 📏 Plastic card or mediator for aligning glass.
☑️ Preparation for the installation of protective glass
Pay special attention to the areas around the sensors and the speaker. On the Redmi Note 7, they are located at the top of the screen (light sensor on the left, speaker on the right), if dust falls under the glass here, this can lead to false alarms of the proximity sensor during calls.
⚠️ Warning: Do not use household detergents or wet wipes with flavors to clean the screen! They leave a film that impairs the grip of the glass on the display. Also avoid paper towels - they scratch the oleophobic coating.
3. Step-by-step instruction: how to glue glass without bubbles
Now, to the most critical point, follow the instructions in order, without missing the steps, and for convenience, you can watch the video manual, but there are nuances in our guide that are rarely mentioned in the videos.
Step 1. Positioning the glass
Before you remove the protective film from the adhesive layer, apply the glass to the screen and check its location. On the Redmi Note 7, it is important that:
- 📱 The cutout for the front camera and sensors coincided with the real location (usually it is shifted to the left).
- 🔄 The edges of the glass did not go on the plastic case of the smartphone (this can lead to detachment).
- 📏 The distance from the bottom edge of the glass to the start of the touch buttons (if any) was the same on both sides.
Step 2. Glass sticker.
- Remove the protective film from the glue side of the glass (only on one side!).
- Carefully apply the glass to the top of the screen, combining it with the cutout under the camera.
- Lightly press the center of the glass and let it "stick" to the screen.
- Use a plastic card or mediator to evenly press the glass from the center to the edges, squeezing out possible bubbles.
Step 3 Final check
Turn on your smartphone and check:
- 🔍 Are there any bubbles (especially around the edges).
- 📞 Is the proximity sensor working (try making a test call).
- 🖱 Sensor Sensitivity – Swipe your finger across the screen.
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If there are small bubbles left after the sticker, do not try to squeeze them out - this can lead to the detachment of the glass. Instead, gently tuck the glass from the edge (for example, with a shoulder blade for the glass). SIM-And then you glue it back together, and you can do it 1-2 times without losing any properties.
4.Typical mistakes and how to avoid them
Even with a careful installation, you can make mistakes that will come later, and here are the most common problems and solutions.
| Problem. | Reason. | How to fix it |
|---|---|---|
| Bubbles around the edges of glass | Dust or hair got under the glass during the sticker, and there may be insufficient pressing of the edges. | Re-glue the glass after cleaning the screen, use tape to remove dust. |
| The glass flakes off after 1-2 weeks | Low quality glue layer or greasy marks on the screen before the sticker. | Use alcohol to degrease the screen, choose silicone glue glasses (e.g. Nillkin Super Frosted). |
| The proximity sensor is down. | The glass is too thick or incorrectly positioned (overlapping the sensor). | Select glass with a thickness of no more than 0.3 mm. Check the combination of the cutout for sensors. |
| Rainbow divorces in bright light | Low quality glass or air gap between the glass and the screen. | Replace the glass with an optical adhesive model (e.g. Spigen Glas.tR EZ Fit). |
Another common problem is the halo effect (light circles around bubbles when the screen is on), which is caused by microscopic gaps between the glass and the display. To avoid this, use UV-adhesive glasses (they require UV fixation, but they provide a perfect fit).
⚠️ Warning: If the screen becomes less touch sensitive after installing the glass, check if the glass is too thick. For the Redmi Note 7, the maximum recommended thickness is 0.33 mm. Also make sure that the glass does not overlap the touch button area (if they are displayed on the screen).
5 How to Remove Old Glass Without Screen Damage
If you're gluing the glass, you need to remove it carefully without scratching the display.
- Take a plastic spatula (for example, for SIM-card or mediator.
- Carefully tuck the glass from the corner where it has already begun to peel off (usually the lower right or left corner).
- Slowly drive the blade along the edge, separating the glass. Don't make any effort -- if the glass doesn't lend itself, moisten the edge with warm water and soap (this will weaken the glue).
- After removal, wipe the screen with an alcohol napkin to remove the glue residue.
If the glue is still on the screen, use tape: stick it on sticky areas and sharply tear it off. Repeat until the screen is clean. For persistent contaminants, you can use white spirit, but apply it only to a cotton swab, not on the screen!
What to do if the glass is cracked but does not peel off?
6. Alternative ways to protect the screen
If the glass sticker seems too complicated, consider alternatives:
- 🧲 Hybrid film: thinner than glass (0.1-0.15 mm), but protects against scratches, does not save from impacts, but does not affect the sensitivity of the sensor.
- 🛡 Liquid glass: coated and solidified to form a protective layer, lasts 6-12 months, but does not protect against severe shocks.
- 📦 High-sided case: if you drop your phone often, a thin film combination + A screen-protected cover can be more reliable than a single glass.
The Redmi Note 7 is especially relevant for cases with built-in screen protection (such as the Xiaomi Mi Protective Case), which close the display when the case is closed, preventing scratches in your pocket, but remember that such a case will not save you from falling on the screen.
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If you choose between glass and film, be mindful of your habits: glass is more reliable when falling, but it can crack and requires careful installation; film is cheaper and easier to stick, but only protects against scratches.