Replacing glass on <em>Redmi Note 12</em>: complete guide with prices and tips

Broken glass on Redmi Note 12 - a problem that almost every third smartphone owner faces. Even a minor crack can lead to cuts, incorrect operation of the sensor, or complete failure of the display. But what should you do: contact a service center, look for a specialist at an ad, or try to replace the glass yourself?

In this article we will look at all glass replacement options for Redmi Note 12 (including models Pro, Pro+ And 4G), compare prices for original and non-original spare parts, and also give step by step instructions for those who decide to do the repairs themselves. We will pay special attention to typical mistakes that can turn a simple replacement into an expensive repair of the entire display.

Spoiler: in 80% of cases, replacing glass yourself without experience leads to damage to the OLED matrix or cables - savings of 2-3 thousand rubles turns into costs of 10-15 thousand. But if you are ready to take risks, we will tell you how to minimize the risks.

How much does it cost to replace glass? Redmi Note 12 in 2026

The cost of replacement depends on three factors: smartphone model (Note 12 4G, Pro or Pro+), glass type (original or analogue) and repair place (official service, private master or self-replacement). Below are the current prices for June 2026 for Moscow and the regions.

Model	Original glass (price)	Analogue (price)	Cost of work in the service	Total (original)	Total (analog)
Redmi Note 12 4G	3 500 — 4 200 ₽	800 — 1 500 ₽	1 500 — 2 500 ₽	5 000 — 6 700 ₽	2 300 — 4 000 ₽
Redmi Note 12 Pro	4 800 — 5 500 ₽	1 200 — 2 000 ₽	2 000 — 3 000 ₽	6 800 — 8 500 ₽	3 200 — 5 000 ₽
Redmi Note 12 Pro+	6 000 — 7 000 ₽	1 800 — 2 500 ₽	2 500 — 3 500 ₽	8 500 — 10 500 ₽	4 300 — 6 000 ₽

Important: prices for original glass may vary depending on the supplier. For example, in official services Xiaomi spare parts are 10-15% more expensive than from private craftsmen, but they provide a guarantee on the work. Analogues are often sold under the guise of “original” - they can be distinguished by lack of oleophobic coating (fingers glide worse) and a more fragile structure.

Advice: if you are offered to replace glass for 1,500 ₽ “with work” - this is a 100% low-quality analogue. Such glass lasts 2-3 months, after which it cracks at the slightest blow.

Original vs analogue: what to choose for Redmi Note 12

The main question when replacing glass is to buy an original spare part or save on an analogue one. Let's look at the pros and cons of each option.

• ✅ Original glass: full compatibility with the matrix, factory oleophobic coating is preserved, warranty of 3 months. The downside is the high price and shortage in some regions.
• ❌ Premium analogue (for example, from Tianma or BOE): 20-30% cheaper than the original, but may have worse light transmittance. Suitable for Note 12 4G, but not recommended for Pro+ due to the risk of detachment.
• ⚠️ Budget analogue (no-name): price from 500 ₽, but often comes without glue, with a crooked cutout for the speaker and camera. In 50% of cases it requires repeated replacement after 1-2 months.

Expert opinion: for Redmi Note 12 Pro+ with AMOLED-It’s better not to risk the display and install the original. The fact is that cheap glass can overheat the matrix due to poor thermal conductivity, which leads to pixel burnout. For Note 12 4G with IPS-A high-quality analogue is also suitable for the screen.

⚠️ Attention: If after replacing the glass with Redmi Note 12 Pro "Rainbow" spots appeared when the screen was tilted - this is a sign that the technician used too thick a layer of glue. This can only be corrected by disassembling it again.

Step-by-step instructions: how to replace glass yourself

If you decide to replace the glass yourself, you will need:

• 🔧 Screwdriver set (Y000, T3, T5)
• 🧲 Suckers for removing glass (2 pcs.)
• 🔥 Hairdryer or infrared station (power at least 800 W)
• 🧴Glue B-7000 or LOCA (for OLED screens)
• 📏 Plastic mediators (for separating glass and matrix)
• 🛡️ Protective gloves and glasses

The replacement process takes 1.5-2 hours and consists of 5 stages:

1. Warming up the glass: Use a hairdryer to warm the edge of the screen around the perimeter (temperature 70-80°C). Do not overheat - this may damage the cables!
2. Removing broken glass: using suction cups, carefully lift the glass, then use a mediator to separate it from the matrix. If the glass is badly cracked, first seal it with tape.
3. Cleaning the matrix: Remove any remaining old glue with alcohol or acetone. Do not use metal tools!
4. Applying new glue: for Note 12 4G will do B-7000, for Pro/Pro+ with OLED - only LOCA (applied in a thin layer).
5. Installing new glass: Align it with the connectors and press down. Use a UV lamp to polymerize the glue (10-15 minutes).

Check your phone model (Note 12 4G/Pro/Pro+)

Buy the right adhesive for your screen type

Prepare your work area (clean surface, good lighting)

Back up your data (30% risk of damaging your phone)

Charge your phone to 50% (for testing after repair) -->

⚠️ Attention: On Redmi Note 12 Pro+ glass glued to the matrix no gap. If you remove it carelessly, you risk breaking the backlight cable - repairs will cost 8,000 ₽.

If after replacement the sensor stops working or “dead zones” appear, the problem is incorrect installation of the cable. This can only be corrected by disassembling it again.

What to do if the glass does not come off?

If the glass does not give way even after heating, it means that glue was used. LOCA. In this case:

1. Increase the temperature of the hair dryer to 90°C (but not higher!).

2. Pry the glass from the corner with a thin guitar string (available at instrument stores).

3. If all else fails, contact service, as the risk of damage to the matrix is too high.

Common mistakes when replacing glass and how to avoid them

Even experienced technicians sometimes make mistakes that turn a simple glass replacement into a full-fledged display repair. Here are the most common of them:

• 🔥 Matrix overheating: If you hold the hair dryer too close (less than 5 cm), you can melt the cables or damage the OLED panel. The optimal distance is 10-15 cm.
• 🧴 Wrong glue: use B-7000 on OLED screens leads to glass peeling after 1-2 weeks. For Note 12 Pro/Pro+ only needed LOCA.
• 📱 Dust ingress: If you assemble the phone in a dusty room, debris will get under the glass, which will be visible when you turn on the screen. Work in a clean room or use dustproof box.
• ⚡ Damage to cables: on Redmi Note 12 The sensor cable is located on the right - it is easy to touch it with a pick. Always start removing glass from the left edge!

The most expensive mistake is rupture of the flexible backlight cable. On Note 12 Pro+ replacing it costs 6,000 ₽, and some services offer to replace the entire display module (12,000 - 15,000 ₽). To avoid this, use plastic picks and don't try too hard.

Where is the best place to replace glass: comparison of options

Choosing where to replace your glass depends on your budget, the time frame for the repair, and your willingness to take risks. Let's look at all the options:

Option	Pros	Cons	Repair period	Warranty
Xiaomi official service	Original spare parts, 6-12 month warranty	Expensive (20-30% higher than the market), queue for 3-5 days	3-7 days	12 months
Private master (by advertisement)	Price is 30-40% lower, quick repair (1-2 hours)	Risk of running into an unscrupulous contractor, no guarantee for spare parts	1-2 hours	1-3 months (if available)
Service center at the store (For example, Svyaznoy, M.Video)	Average prices, 3-6 month warranty, can be replaced under phone warranty	They use analogues, sometimes they refuse repairs due to “complexity”	2-3 days	3-6 months
Self-replacement	Minimum costs (from 800 ₽), repair experience	High risk of damage to the phone, no warranty	1.5-2 hours	—

Expert advice: if your Redmi Note 12 under warranty, please contact Xiaomi official service. Repairing it yourself or turning to a private seller will void the warranty on the entire phone. If there is no guarantee, look for a specialist with good reviews on Yandex.Services or YouDo.

Please note: some services offer “comprehensive repairs” - glass replacement + cable prevention + cleaning of connectors. This is justified if the phone has often been dropped or been in water. The cost of such repairs is from 5,000 ₽, but it reduces the risk of repeated breakdowns.

How to extend the life of new glass: 5 tips

Even after successfully replacing glass, it can quickly become unusable if simple rules are not followed. Here's what the experts recommend:

• 📱 Use a case with sides: Even a slight hit to the edge of the screen can cause a crack. Cases from Spigen or Ringke They raise the glass by 1-2 mm, which saves you in case of falls.
• 🧴 Apply a protective coating: The oleophobic coating on new glasses wears off in 2-3 months. It can be restored with liquid glass (for example, Belkin ScreenForce).
• 🔋 Avoid overheating: Do not leave your phone in the sun or near the battery. On Redmi Note 12 Pro+ overheating can cause the glass to peel off from the matrix.
• 💧 Don't wash your phone under water: even if it has protection IP53, moisture getting under the glass leads to corrosion of the adhesive. Use wet wipes for cleaning.
• 🔄 Check glass fastening regularly: if you notice that the glass begins to “play” when pressed, contact service immediately. This is a sign of the glue peeling off.

Interesting fact: on Redmi Note 12 glass often cracks not from a direct blow, but from vibrations. For example, if the phone is in your pocket while running or cycling. To avoid this, use cases with shock-absorbing inserts.

Frequently asked questions about glass replacement Redmi Note 12

Is it possible to replace only the glass without touching the matrix?

Yes, but only if the matrix is not damaged. On Redmi Note 12 4G The glass and matrix are separated, so they can be changed separately. On Pro/Pro+ With an OLED screen, the glass is glued to the matrix, and careless removal can damage it. Services often offer to replace the entire display module, even if the matrix is ​​intact - this is a trick for profit.

How long does it take to replace glass at the service?

In the official service Xiaomi — 3-5 days (due to the queue). For private craftsmen - 1-2 hours, if spare parts are available. Self-replacement for beginners takes 3-4 hours (including glue drying).

Why does the sensor not work well after replacing the glass?

The reasons may be different:

• The glass is poorly glued (air bubbles interfere with the sensors).
• The sensor cable is damaged (typical for Note 12 Pro+).
• Poor quality glue was used, which conducts current.

Solution: disassemble the phone and re-glue the glass. If the problem is in the cable, it will need to be replaced (cost 2,000 - 3,000 rubles).

Is it possible to replace glass with Redmi Note 12 under warranty?

Not if you broke the phone yourself. Warranty Xiaomi does not cover mechanical damage. However, if the glass cracks on its own (which is extremely rare), you can try contacting the service department and requesting free repairs. To do this you need a receipt and a phone box.

What is the difference between replacing glass and Note 12 4G And Note 12 Pro+?

Main differences:

• Note 12 4G: IPS-matrix, glass can be easily separated, glue can be used B-7000.
• Note 12 Pro+: AMOLED-matrix, glass glued without gap, glue required LOCA and a UV lamp for polymerization. The risk of matrix damage is 3 times higher.

Cost of spare parts for Pro+ also higher by 30-40%.