Touchscreen on Xiaomi phone: what it is, how it works and how to check for malfunctions

Touchscreen is one of the key technologies that made smartphones what they are today. Without it, it's hard to imagine a modern Xiaomi, whether it's a budget Redmi or the flagship Mi 13 Ultra. But what is a touchscreen really? Why does it sometimes stop responding to touch or malfunction? And how do you know that it's the problem, not the software?

Many users confuse the touchscreen with the display, thinking that they are the same thing. In fact, the touchscreen is a separate transparent layer located on top of the screen, which is responsible for recognizing touches, AMOLED or IPS) — In Xiaomi smartphones, these two elements are often combined into a single module, but technically they perform different functions.

If your Xiaomi has stopped responding to touch, is stuck on the logo or behaves unpredictably, it can be the fault of both the touchscreen and the software. In this article, we will analyze how the touch screen works, what types of touchscreens are available, how to diagnose malfunctions and what to do if it breaks.

What is a touchscreen and how it works in Xiaomi smartphones

A touchscreen is an input device that converts the physical touch of a finger or stylus into a digital signal. In Xiaomi smartphones, it consists of several layers:

🔹 Protective glass – The outer layer (often Gorilla Glass or similar material) that protects against scratches and impacts.
🔹 Touch layer – transparent film or glass with conductive tracks that record touches.
🔹 Adhesive layer - connects the touchscreen with the display (in modern models is often used). OCA-glue).
🔹 Display matrix – forms an image (not part of the touchscreen, but works with it in pairs).

Xiaomi uses two main types of touch screens:

Resistive is an outdated type that responds to pressure (used in old button phones, not used in modern smartphones).
Capacitives respond to the electric field of the finger, which is what we see in all modern Redmis, POCO They support multi-touch (simultaneous touch with several fingers) and more accurate.

Capacitive touchscreens, in turn, are divided into:

📱 Projective Capacitive (Projected Capacitive, PCAP) — The most common type in Xiaomi, the touch mesh is placed under the protective glass, which makes the screen more durable.
📱 Surface-capacitive - an outdated version, where the conductive layer is applied to the outer surface (easily scratched).

Flagship models (such as the Xiaomi 14 or Mix Fold 3) often use In-Cell or On-Cell technology, where the touch layer is integrated directly into the display matrix.

📊 What kind of smartphone you Xiaomi?

Redmi (Series Note, A, etc.)

POCO (F, X, M)

Mi (flagship series)

Black Shark (game)

Other

How to check the touchscreen on Xiaomi: signs of malfunction

If your Xiaomi is not responsive to touch, it doesn't always mean that the touchscreen is to blame. Sometimes the problem is software, a damaged plume, or even a battery that is swollen and presses on the screen. Before you carry the phone to the service, try to diagnose the problem yourself.

The main symptoms of a faulty touch screen:

❌ The screen does not respond to touch at all or only in certain areas ("dead zones").
❌ Spontaneous taps, "ghost" touches without your involvement.
❌ Delays in input (for example, the keyboard lags behind the fingers).
❌ Multi-touch does not work (you can not zoom in with two fingers).
❌ The screen is "twitching" or scrolling on its own.
❌ After a fall or impact appeared colored stripes, but the display is working.

To determine exactly if the touchscreen is to blame, follow the following steps:

Check the response to touch in safe mode

Test the screen with special applications (for example, Touch Screen Test)

Examine the body for cracks or dents

Try connecting your phone to your PC and controlling it with your mouse (via modes) ADB or Mi PC Suite)

Reset the settings to factory (if the problem is software, it can help)-->

One of the most reliable ways is to use a touch screen test.

Download the Touch Screen Test app from Google Play (for example, from the developer KVADGroup).
Run the test and a grid will appear on the screen.
Swipe your finger around all the areas, and if you don't get any touches, the touchscreen is damaged.

You can also use the hidden service menu (does not work on all models):

Enter the dialer: ##6484## (to check the touchscreen)


Or: ##4636## → “Testing” → “Tachskrin”

⚠️ Attention: If the phone stopped responding to touch after a fall, but the display shows the image, do not try to disassemble it yourself. In 90% of cases, this leads to damage to the plume or the final failure of the touch screen.

Causes of failure of touchscreen on Xiaomi: mechanical and software

Touchscreen can fail due to both physical damage and software failures.

Type of cause	Specific examples	Can I fix it myself?
Mechanical damage	💥 Strike or fall on a hard surface 💧 Moisture entering glass 🔥 Overheating (for example, after a long game) 🛠️ Poor repair (damage to the plume)	❌ No (replacement required)
Programmatic failures	🤖 Error after update MIUI 🦠 Virus or malware 🔄 Conflict of applications 📱 Failure in the operation of the driver touch screen	✅ Yes (reboot, reset, firmware)
Wear and ageing	⏳ Natural abrasion of the sensory layer (rarely, but happens after) 3-5 years) 🔋 Bloating of the battery pressing on the screen	❌ No (touchscreen or battery replacement)

The most common reason is falling on the screen, and even if the glass was intact, the inner layers of the touchscreen could get damaged, like the Redmi Note 10 and the other two. POCO X3 It's a common loop that connects the touchscreen to the motherboard, and when it's hit hard, it can move or break.

Another common problem is moisture, and if the phone has been in water, corrosion can damage the touchscreen contacts, in which case the screen may be interrupted or not react at all.

💦 The screen lighting became dim or there were divorces.
💦 Touchscreen responds only to a strong push.
💦 A spot appeared in the corner of the display (usually yellow or green).

Software failures are less common, but they are also possible. MIUI Some of the users of Xiaomi 11T They complained about a jumping touchscreen, and in those cases, it helps to roll back on the previous version of the firmware or reset the settings.

💡

If the touchscreen has become unworkable after installing a magnet case (for example, for wireless charging), try removing it. Strong magnetic fields can affect the accuracy of the capacitive sensor.

Can I repair the touchscreen on Xiaomi or just a replacement?

The question that many people are concerned about is, if the touchscreen is broken, can it be repaired, or will it have to be completely changed?

✅ Software failure - corrected by flashing, resetting or updating drivers, for example, if the touchscreen is glitching after the update MIUI, You can try to reset to the old version via Fastboot.
✅ The plume has disconnected, and if the screen stopped working after the fall, but there is no visible damage, the connector may have moved away. ~500-1000 ₽).
❌ A crack or a break in the touch layer is not repairable, only replacement. Even if the display is intact, the touch screen will have to be changed.
❌ Damage to the matrix + touchscreen – in this case, change the entire display module (so cheaper than to separate the layers).

In most cases, the touchscreen on Xiaomi changes with the display because they are glued together. Separate replacement is possible, but it is more expensive because of the complexity of the process. 12 Replacing the entire module is worth it. ~5000-7000 ₽, and separately touchscreen — ~3000-4000 ₽ + job (~2000 ₽).

If you decide to replace the touchscreen yourself, consider:

🛠️ Special glue will be required (for example, B-7000 or OCA), dryer for softening old glue and plastic shoulder blades.
🛠️ The risk of damaging the plume or display during disassembly is very high (especially in models with a high level of weight). AMOLED-screen).
🛠️ After replacement, you may need to calibrate the touchscreen (made through an engineering menu or special utilities).

⚠️ Note: In Xiaomi models with Always-On Display (such as the Mi 11 or 12 Pro), this feature may be lost after replacing the touchscreen. This is due to the fact that the new screen will not be stitched for a particular model. EDL-The system (requires special equipment).

How to protect the touchscreen on Xiaomi from damage: prevention

It is impossible to fully insure against a touchscreen breakdown, but you can significantly reduce the risks by following simple recommendations:

Use high-quality protective glass. Even if your Xiaomi already has a factory coating (for example, Gorilla Glass Victus), the additional glass will save you from scratches and reduce the impact force when falling: 🛡️ Spigen Glas.tR EZ Fit (with no bubble installation). 🛡️ AmFilm Ultra Glass (for models with curved screens). 🛡️ Xiaomi Original Tempered Glass (optimum price/quality).

Avoid extreme temperatures.

Don't push the screen with force.

Update regularly MIUI.

MIUI 14

Do not use a phone with wet hands.

If you are actively playing on a smartphone (such as Genshin Impact or a smartphone). PUBG Mobile, consider buying a game trigger (e.g. Black Shark FunCooler) that reduces the load on the touchscreen by transferring some controls to physical buttons.

Also, avoid cheap metal latch covers, which can scratch the screen if you unscrupulously remove the phone. TPU (soft plastics) or thin bumpers.

What if the touchscreen stopped working after the update?

If the problem has occurred after the update MIUI, Try: 1. Restart your phone in Safe Mode (hold the power button) → "Safe Mode. 2. Remove newly installed applications (they may conflict with new firmware). 3. Reset settings via Settings → The phone. → Reset settings. 4. If nothing helps, roll back to the previous version. MIUI Using Fastboot or Mi Flash Tool.

The cost of replacing the touchscreen on popular models Xiaomi

The price of a touchscreen replacement depends on the smartphone model, the type of screen and whether you are changing only the sensor or the entire display module. Below is an indicative price for popular devices (currently for 2026):

Xiaomi model	Screen type	Cost of replacing a touchscreen (₽)	Cost of replacing the display module (₽)
Redmi Note 12 Pro+	AMOLED, 120Hz	3 500 – 4 500	7 000 – 9 000
POCO X5 Pro	AMOLED, 90 Hz.	3 000 – 4 000	6 000 – 7 500
Xiaomi 13 Lite	AMOLED, 120Hz	4 000 – 5 000	8 500 – 10 000
Redmi 10C	IPS, 60 Hz.	1 500 – 2 500	3 000 – 4 000
Black Shark 5 Pro	AMOLED, 144Hz	5 000 – 6 500	12 000 – 15 000

Prices are indicated for official and verified service centers, and in "garage" workshops, replacements can be offered cheaper (at least for the first time). 20-30%), But the risk of getting a poor-quality touchscreen or damaged matrix is much higher.

It is also worth considering:

💰 The price does not include diagnosis (usually). ~500 ₽).
💰 If not only the touchscreen, but also the display is damaged, it is cheaper to replace the entire module.
💰 In the models with LTPO AMOLED (Xiaomi 14, for example, is more expensive to replace because of the complexity of the matrix.
💰 The replacement guarantee is usually 1-3 months (check with the master).

If your Xiaomi is guaranteed, but the screen crashed because of you, the official service may refuse to repair free of charge. However, some communication salons (for example, the Messenger or MTS) offer insurance for mechanical damage - check if you have it issued.

💡

Replacing the touchscreen in an unofficial service can lead to the loss of features like Always-On Display or a high refresh rate.

Frequent questions about touchscreen on Xiaomi

🔍 Why the touchscreen on my Xiaomi only works after a reboot?

This is a typical sign of a software failure or driver problem.Try: Clear cache via Settings → Memory. → Clean up. Remove newly installed apps. Reset to factory settings (be sure to back up!) If the problem persists, the touchscreen plume may have been damaged (diagnosis needed).

🔍 Can I use a phone with a cracked touch screen?

Technically, yes, but: Cracks can damage your fingers (sharp edges of glass); moisture or dust trapped under the glass will accelerate the corrosion of your contacts; the sensor can stop working completely at any time; if the cracks are small and the touchscreen works, stick a protective film on it and replace the glass as soon as possible.

🔍 Why in the cold touchscreen on Xiaomi does not respond well to touch?

This is a feature of capacitive screens. In the cold: The finger becomes less conductive (due to dry skin); the glue between the touchscreen layers can become slightly deformed; the battery discharges faster, which affects the sensitivity of the sensor; Solution: use the phone with conductive thread gloves or warm your hands before use.

🔍 How to distinguish a touchscreen breakdown from a display problem?

Do a simple test: Connect your phone to a PC or TV via HDMI (If you have an image on the outside, but the touchscreen doesn't work, it's a problem with the sensor or the plume. If you don't have it anywhere, it's probably a matrix or a graphics chip that's broken.

🔍 How long does it take to replace the touchscreen in the service?

Depending on the model: 1-1.5 For budget models (Redmi) 10A, POCO M5). 2-3 for the first time, for flagships (Xiaomi) 13, Mix Fold 2) It's because of the complexity of the disassembly, up to a day if you need to order a spare part, and some services offer express replacements. 30-40 minutes), but it is risky - the master may not be able to sloppy connect the plume.