Xiaomi Redmi Note 12 is one of the most popular smartphones of 2023, but it AMOLED display vulnerable to mechanical damage. A fall from a height of only 30 cm onto asphalt in 80% of cases leads to cracks in the matrix or sensor layer, and repairs cost 30–70% of the cost of a new device. In this article we will look at how replace the screen yourself on Redmi Note 12 (models 4G/5G/Pro/Pro+), where to buy the original module, how much it will cost in service and what pitfalls await when choosing non-original spare parts.

According to statistics from service centers, replacing the display on this model is required on average after 18–24 months of operation - more often than competitors (for example, Samsung Galaxy A54 this figure is 28 months). The reason lies in the thin glass (the thickness is only 0.55 mm) and lack of factory type protection Gorilla Glass Victus in basic versions. If you have already encountered a problem, then you will find step-by-step instructions with photos, comparison of prices for spare parts and tips on how to avoid common mistakes during repairs.

How much does it cost to replace the screen on Redmi Note 12 in 2026

The cost of repairs depends on three factors: smartphone model (Redmi Note 12 4G, 5G, Pro or Pro+), type of display being replaced (original, OEM or copy) and region. The table below shows current prices for June 2026 for Moscow, St. Petersburg and the regions. Please note: in service centers Xiaomi use only original modules, but their price may differ from the market price by 15–25%.

Model Display type Price (₽), Moscow/St. Petersburg Price (₽), regions Repair period
Redmi Note 12 4G Original (with frame) 12 500–14 000 11 000–12 500 1–2 days
Redmi Note 12 5G OEM (no frame) 9 500–11 000 8 500–9 800 2–3 hours
Redmi Note 12 Pro Original (with frame) 15 000–17 000 13 500–15 000 1 day
Redmi Note 12 Pro+ Copy (premium) 7 000–8 500 6 000–7 500 3–4 hours

It is important to consider that the cost of repairs in the service already includes:

  • 🔧 Master's work (1,500–3,000 RUR depending on complexity)
  • 📦 Diagnostics (free if you agree to repair)
  • 🔄 Data transfer (if required, +500–1,000 ₽)
  • 🛡️ Warranty (from 3 months for original spare parts)

If you are planning independent replacement, the budget will be reduced by 30–40%, but you will need to buy tools (suction cups, picks, hair dryer) and risk losing the warranty. How to choose a display for Redmi Note 12, read the next section.

📊 Where are you planning to repair Redmi Note 12?
  • In the official Xiaomi service
  • In a private workshop
  • On your own
  • I haven't decided yet

How to choose a display for Redmi Note 12: original vs OEM vs copy

In the spare parts market for Redmi Note 12 There are three types of displays, and their quality differs radically. Original modules supplied from factory Xiaomi and are marked MI ORIGINAL on a train, but their price is often inflated. OEM displays (Original Equipment Manufacturer) are produced by the same suppliers as the originals, but without the brand logo - their quality is 90% identical, and the price is 20-30% lower. Copies (or "replicas") are divided into three categories: premium, standard and economy - the latter may have problems with color rendering and sensor.

To avoid running into a fake, check the following parameters when purchasing:

  • 📌 Marking on the cable: original - MI ORIGINAL or HLT (supplier for Xiaomi), OEM - TCL or BOE without logo
  • 🔍 Glass quality: the original has an oleophobic coating (a drop of water rolls off without a trace), copies are often matte or too smooth
  • 🎨 Color rendition: On the original, the corners of the screen do not turn yellow when viewed at an angle of 45°
  • 🔧 Equipment: the original set comes with screws, frame and adhesive tape, copies often do not have them

Where to buy spare parts for Redmi Note 12:

  • 🌍 AliExpress: cheap copies (from 4,000 ₽), but the risk of running into defects is 15–20%. Top Sellers: MI Global Store, Xiaomi Original Parts
  • 🏢 Local suppliers: for example, MobiPart or GSMMoscow — OEM displays with a guarantee (price from 8,000 ₽)
  • 🛒 Avito/Yula: you can find used originals from disassembly (the risk of buying a broken module is 30%)

💡

Before purchasing a display, check its functionality using a multimeter. Connect the cable to the test controller (costs ~1,500 ₽) and make sure that the matrix displays the image without dead pixels.

Step-by-step instructions: how to replace the screen on Redmi Note 12 yourself

If you decide to repair it yourself, prepare your tools and follow the instructions. Opening hours: 1.5–2 hours for beginners, 40–60 minutes for experienced professionals. You will need:

  • 🔥 Hairdryer (power at least 1,200 W) or hot plate
  • 🧲 Suction cups (2 pcs.) and plastic picks
  • ⚙️ Screwdriver T3 And T5 (for frame screws)
  • 🧴Glue B-7000 or double sided tape 3M
  • 🔋 Battery (if the screen is completely broken, the smartphone may not turn on)

Turn off the smartphone and remove the SIM card|Heat the edges of the screen with a hairdryer (temperature 60–70°C)|Pry the screen with suction cups and carefully separate it with a mediator|Disconnect the battery and display cables (photo below)|Check the new module for dead pixels before installation-->

Step 1. Removing the old screen

Heat the edges of the smartphone with a hairdryer for 2-3 minutes, holding it at a distance of 5 cm. Using suction cups, lift the screen from the lower left corner (there are fewer cables there). Insert a plastic pick and carefully move it around the perimeter, releasing the glue. Don't press too hard — sensor and speaker cables run under the screen. Once the screen is separated, set it aside and disconnect the battery cables (to avoid short circuit) and the display.

Step 2: Install a new display

Before installing a new module, clean the smartphone frame from old glue with alcohol or acetone. Apply a thin layer of glue B-7000 along the perimeter of the frame (do not overdo it - excess may end up on the trains). Connect the new display cables to the motherboard and gently press the screen, starting from the top. Check the functionality of the sensor and image display until final fixation!

Step 3: Build and Test

Secure the screen with screws (do not overtighten - you may damage the threads) and check:

  • 📱 Sensor operation (test in Settings → About phone → Diagnostics → Touch test)
  • 🔊 Speaker sound (sometimes the cable comes off during assembly)
  • 🔋 Charging (if after repair the phone does not charge, check the battery cable)

What should I do if after replacement the screen flickers or the sensor does not work?

If the image blinks, check the tightness of the display cable to the connector on the motherboard. Often the problem is solved by reinstalling it again. If the sensor does not respond, the controller may be damaged Synaptics (service diagnostics required).

Common mistakes when replacing a display and how to avoid them

Even experienced craftsmen sometimes make mistakes that lead to re-repair or failure of other components. Here are the most common problems and ways to prevent them:

⚠️ Attention: If during disassembly you hear a crunching sound or see sparks, immediately disconnect the battery! This is a sign of a short circuit that can burn out the motherboard. In this case, the repair will cost 8,000–12,000 rubles.

Error 1. Damage to the battery cable

If you dismantle the screen carelessly, the mediator may catch the battery cable, which will lead to loss of charge or complete power failure. To avoid this, always disconnect the battery first and use only plastic tools. If the cable still comes off, it can be soldered at a service center (cost: RUB 1,500–2,000).

Error 2. Glue getting on the connectors

Excess glue B-7000 or double-sided tape may get on the contacts of the cables, which will cause artifacts on the screen or a broken sensor. To prevent this from happening, apply a thin layer of glue and check the cleanliness of the connectors before connecting. If glue is already on the contacts, clean them with alcohol and dry them with a hairdryer.

Error 3. Display incompatibility with firmware

On Redmi Note 12 Pro+ with processor Dimensity 1080 Sometimes display problems occur after installing a non-original screen. Symptoms: flickering, incorrect colors or no image. The solution is to update the firmware via Fastboot or roll back the version MIUI until stable. Detailed instructions are on the forum 4PDA in the topic about Redmi Note 12.

💡

If after replacing the screen the phone overheats or discharges quickly, the battery cable or power controller is most likely damaged. Don't ignore this problem - it can cause your battery to swell!

Where is it better to repair: service vs independent replacement

The choice between a service center and do-it-yourself repair depends on your experience, budget and risks. Let's compare the pros and cons of each option:

Criterion Xiaomi official service Private workshop DIY repair
Cost (with spare parts) 12 000–17 000 ₽ 8 000–12 000 ₽ 5 000–9 000 ₽
Warranty 6–12 months 3–6 months No
Repair period 1–3 days 2–5 hours 1–3 hours
Risk of damage Minimum Medium High

When to contact the service:

  • 🔧 If you have Redmi Note 12 Pro+ — its display is more difficult to install due to the additional layer of protection
  • 🛠️ If you have never repaired smartphones before
  • 📱 If the phone is under warranty (self-repair will void it)

When to take a risk and do it yourself:

  • 💰 The budget is very limited (savings up to 50%)
  • 🔨 You have experience disassembling gadgets (for example, changing the battery for iPhone)
  • 📦 You found an original display at an OEM price (for example, at disassembly)

⚠️ Attention: If, after replacing the screen in the service, you notice that the sensor is working with a delay or the colors are distorted, request repeated diagnostics. According to the Law “On the Protection of Consumer Rights” (Article 29), you have the right to free elimination of defects during the warranty period.

Frequently asked questions about replacing the display on Redmi Note 12

Is it possible to replace only the glass and not the entire display?

On Redmi Note 12 glass is glued to the matrix, so Separate glass replacement is not possible. The services offer “repolling” (re-gluing glass), but this is a temporary solution - after 2-3 months, streaks or peeling will appear. The best option is to completely replace the module.

Why doesn't Face ID work after replacing the screen?

On Redmi Note 12 Pro/Pro+ The face recognition sensor is built into the display module. If you installed a non-original screen, Face ID won't work — controller firmware or replacement with the original is required. In basic models (4G/5G) this problem does not exist.

How long does it take to replace a screen in the service?

At official centers Xiaomi repairs take 1-2 days (due to the queue), in private workshops - 2-4 hours. If you need it urgently, look for services marked "Express Repair" (e.g. iFix or Service-Yota).

Can I use a phone with a cracked screen?

Technically yes, but it's dangerous:

  • 🩹 Glass shards can hurt your fingers
  • ⚡ A damaged screen may cause a short circuit
  • 📉 Over time, cracks will spread to the matrix, and repairs will become more expensive

How to check if the display is original?

There are three ways:

  1. Visually: the original has uniform illumination without yellowness around the edges.
  2. Via Settings → About phone → MIUI version: if after replacement the message appears Display: Unknown, the screen is not original.
  3. Using the app CPU-Z: in section Display there must be markings HLT or BOE.