How to remove bubbles on the screen Xiaomi: from film to factory marriage

Air bubbles under glass or protective film on the screen Xiaomi is a common problem that spoils the appearance of the device and interferes with comfortable use. Most often bubbles appear after a new film is pasted, but sometimes they also appear on factory screens due to defects in the adhesive layer. In this article, we will examine all possible causes, from simple (badly pasted film) to complex (detachment). OLED-panels), and give step-by-step instructions to fix the problem.

It is important to understand that not all bubbles are the same: some can be removed independently in 5 minutes, others require the intervention of a service center. We will consider methods for each case, including mechanical extrusion, heating, film replacement and even software diagnostics (yes, sometimes bubbles are not a physical defect, but an artifact of software!).

1. Causes of bubbles on the screen Xiaomi

Before you fix the defect, you need to understand its nature.Bubbles on Xiaomi screens are divided into three main categories:

• 📱 Factory marriage – detachment of the adhesive layer between the glass and the display (often found on Redmi Note models) 10/11, POCO X3/X4). Usually, it is through 1–3 month after purchase.
• 🛡️ Poorly pasted protective film is the most common case, and bubbles are caused by dust, improper positioning, or poor quality glue.
• 🔥 Thermal expansion – when the device overheats (for example, during a game), the glue under the glass can deform, forming microbubbles.

Less commonly, the problem is related to software artifacts — for example, after updating the firmware on MIUI 14, some users complain of “false” bubbles that disappear after the reboot, and bubbles can mimic broken pixels or matrix defects, so it is worthwhile to diagnose before repairing.

If the bubbles are spontaneous, without mechanical action, and their number increases over time, it's almost guaranteed a factory defect, in which case self-repair is fraught with deterioration.

2. How to remove bubbles under protective film

If the problem is film-related, you can fix it without going to the service.

1. Preparation: Turn off your smartphone, wipe the screen with a lilac-free wipe with isopropyl alcohol (70% solution), make sure there is no dust on the surface.
2. Heat: Use a dryer at minimum power (or heat the film with your palm for 1-2 minutes).
3. Extrusion: Take a plastic card (or a special scraper) and gently swipe from the center to the edges, "ejecting" the air. Spiral from the middle of the screen.
4. Fixation: After removing the bubbles, press the film on the edges and leave the smartphone under the press (for example, between books) for 10-12 hours.

If the bubbles remain, try the wet sticking method:

• 💧 Take off the old film and clean the screen.
• 🧴 Apply a few drops of soap solution (1 drop of liquid soap per 100 ml of water) to the glass).
• 📱 Stick a new film, expel the liquid and air with a scraper, soap solution will allow you to adjust the position of the film.
• ☀️ Let it dry for 24 hours - the water will evaporate, and the film will stick without bubbles.

Turn off smartphone | Clean the screen with alcohol | Heat the film with a hairdryer | Squeeze the air with a scraper | Lock under the press for 12 hours-->

⚠️ Warning: Do not use sharp objects (knives, needles) to puncture the blisters - this will damage the oleophobic coating and may leave scratches. Also avoid overheating: temperatures above 50°C deforms the film.

3. Removal of bubbles under the factory glass

If the bubbles appear under the original glass (not the film), it is a sign of detachment of the adhesive layer between the glass and the display, a problem that is common on Xiaomi Mi 11, Redmi K40 and POCO F3 models due to the use of cheap adhesive on some lots.

Option 1: Self-repair (risky!)

This will require:

• 🔧 Set for disassembly (suction cups, mediators, screwdriver) T3/T5).
• 🔥 Dryer or infrared station for softening glue.
• 🧴 Clay. B-7000 or LOCA (re-glue).
• 📏 Ultraviolet lamp (if used) UV-glue).

Process:

1. Warm up the screen with a hair dryer (temperature 60-80 ° C) and gently tuck the glass with a mediator.
2. Remove old glue with alcohol or acetone (work with gloves!).
3. Apply a new glue in a thin layer on the display and press the glass.
4. For UV-Irradiate the screen with a UV lamp for 5-10 minutes. B-7000 Lock the glass under the press for 24 hours.

If you've got a stain or an oil effect after you've glued it, it means that the glue has got between the layers of the display, and you need to replace the matrix completely.

Option 2: Calling the service

The cost of repair in official Xiaomi services:

⚠️ Some services offer "cheap resticking" for 500-1000 ₽, But they use a low-quality glue that turns yellow over time. Always specify which glue will be used (optimal — LOCA or B-7000).

Yeah, under film.|Yeah, under the factory glass.|No, but I'm afraid it will.|No, and I don't plan on tape.-->

Bubbles as a Software Artifact: When the Problem Is Not in the Screen

In rare cases, the Xiaomi screen bubbles are not a physical defect, but a software bug that appears after a MIUI update or custom firmware installation.

• 🖥️ Bubbles only appear in certain apps (like YouTube or TikTok).
• 🔄 After restarting, the defect disappears, but returns with time.
• 🎮 Artifacts occur when a high load is placed on GPU (games, video editing).

How to diagnose:

1. Run the display test through the engineering menu: dial ##6484## in the phone keyboard (on some models #36446337##).
2. Check the screen for broken pixels: Use the Dead Pixel Test app.
3. Reverse the firmware to the previous version if the bubbles appear after the update.

If the problem is in the software, try:

• 📱 Reset the settings to factory (Settings) → The phone. → Resetting settings).
• 🔧 Disable hardware acceleration in the developer settings (Settings) → Additionally. → For developers → Turn off hardware acceleration).
• 🖥️ Flash the device through the Mi Flash Tool (instructions for experienced users).

5.Prevention: How to Avoid Bubbles on the New Screen

To prevent bubbles from reappearing after film repair or replacement, follow these rules:

• 🌡️ Avoid overheating: Do not leave your smartphone in the sun or near heat sources (e.g., on a car torpedo).
• 💦 Control humidity: Do not use your phone in the bathroom or in the rain – moisture penetrates the glass and breaks down the glue.
• 📦 Use quality films: choose Spigen, Belkin or Orzly brands (avoid no-name from China).
• 🔧 Regularly update the software: in new versions MIUI Frequently fixing bugs with display.

For models with OLED-screens (Xiaomi) 12/13, Black Shark) is especially important to avoid mechanical stress: these displays are thinner and more sensitive to pressure. If you drop your phone often, consider a tempered glass option. 9H (For example, Nillkin Amazing H+).

💡

Before sticking a new film, wipe the screen with an antistatic wipe - this will remove the microparticles of dust, which then turn into bubbles.

6 When bubbles aren't bubbles: Other screen defects

Sometimes other problems are taken for bubbles:

If you're not sure about the nature of the defect, take a picture of the screen on another phone and compare it to examples on the Internet, for example, polarizer detachment is often confused with bubbles, but these are completely different problems.

💡

If the bubbles appeared after the phone fell, it almost always means a crack under the glass, even if it is not visible, in this case, self-repair is not recommended: the glass can break when you try to remove.

FAQ: Frequent questions about bubbles on Xiaomi