Where is the proximity sensor on Xiaomi Mi 10T Pro: location, diagnosis and repair

Xiaomi Mi 10T Pro is a flagship smartphone with advanced hardware, but even in such a device can cause problems with sensors. One of the most common questions owners ask is where the proximity sensor is and why it stops working correctly during calls. In this article, we will analyze not only the physical location of the sensor, but also how it is diagnosed, typical malfunctions, and give recommendations for repairs, from software fixes to replacement modules.

The proximity sensor is responsible for turning off the screen when you hold your phone to your ear during a conversation. If it fails, the screen stays active, leading to accidental taps, battery drain and discomfort. In the Mi 10T Pro, this module is integrated into the top of the display, but its exact location depends on the firmware version and hardware revisions. We analyzed the device's diagrams, service center reviews and user tests to provide up-to-date information.

Anatomy of the top panel Xiaomi Mi 10T Pro: where to look for the sensor

In the Mi 10T Pro, the proximity sensor is located in the upper right corner of the screen, under the protective glass of the display, and it is part of the touch module, which also includes the front camera, the light sensor and the infrared port. It is impossible to see it externally — it is hidden under a black masking film, but its position can be determined by the characteristic small circle to the right of the speaker (if you look at the phone in an upright position).

Structurally, the sensor is an infrared sensor that emits and picks up the reflected signal. When you hold the phone to your ear, the signal is reflected off the surface and fixed by the sensor, after which the system turns off the screen. The Mi 10T Pro uses the STK3311 model (or its analogue), which is highly sensitive, but can fail if the glass is contaminated or the plume is damaged.

• 📍 Exact location: upper right corner, under glass, next to the front camera.
• 🔍 How to identify: in bright light, you can notice a barely noticeable blackout (sensor masking).
• ⚙️ Related components: light sensor, IR port, front speaker.
• 🛠️ Sensitivity to damage: high risk of failure when falls or moisture is ingested.

It's important to understand that in the Mi 10T Pro, the proximity sensor is not a separate module, it's soldered into a flexible display plume, which means that when it breaks, it often requires replacing the entire screen or plume, not just the sensor, but 80 percent of the time, the problem is solved by software, which we'll talk about later.

How to check the operation of the proximity sensor: 3 reliable methods

Before you take your phone apart or carry it to the service, make sure the sensor is really faulty. In the Mi 10T Pro, you can test it in a number of ways, from built-in tools to third-party applications. We recommend starting with the simplest method and gradually moving to more complex ones.

Method 1: Testing through the Engineering Menu

The most reliable way is to use a hidden engineering menu (CIT).

1. Open the Phone app.
2. Enter the combination: ##6484### (or #4636## for the alternative menu).
3. Select Hardware Testing → Sensor → Proximity Sensor.
4. Put your hand to the top of the screen, and the value should change from 5 (far) to 0 (close).

Method 2: Diagnostic applications

If the engineering menu is not available (for example, on custom firmware), use third-party utilities:

• 📱 Sensor Box – Shows real-time data from all sensors.
• 🔧 CPU-Z — In the Sensors section, the status of the proximity sensor is displayed.
• 📊 DevCheck – detailed information about iron components.

If the test values do not change or the sensor shows N/A, this indicates a hardware malfunction. However, before output, check the system settings - sometimes the problem lies in software failures.

Make sure there is no protective film or glass on the screen.|Disable the case that can block the sensor|Check that the proximity sensor is not disabled in the settings|Update the firmware to the latest version-->

Typical malfunctions of the proximity sensor and their causes

In the Xiaomi Mi 10T Pro, the proximity sensor can fail for several reasons, and we analyzed data from service centers and identified the 5 most common problems that users face:

A critical feature of the Mi 10T Pro is that the proximity sensor in this model is particularly sensitive to overheating. If the phone heats up above 50°C (for example, when charging or playing), the sensor can temporarily shut down for protection. This is not a breakdown, but the normal behavior of the system. However, if the screen does not go out even at normal temperature, the problem requires diagnosis.

⚠️ Warning: If the sensor stopped working after the phone fell or moisture hit, do not try to disassemble the device yourself. 10T The display plume is very fragile, and it is easy to damage if handled carelessly.

Software solutions to the problem

In 60% of cases, the Mi 10T Pro’s proximity sensor malfunction is due to software failures, not hardware breakdowns. Before carrying your phone for repair, try the following methods:

Calibration of the sensor

Sometimes the sensor needs to be reconfigured.

1. Go to Settings → System → Additional → Calibration of sensors.
2. Select the Approach Sensor and follow the instructions on the screen.
3. After calibration, restart the phone.

2. Resetting settings

If the calibration does not help, reset to factory parameters (pre-backup data):

Settings → About the phone → Reset settings → Reset all settings

This method helps if the problem is caused by application conflict or system files corruption.

3. Firmware update

Some versions of the MIUI for the Mi 10T Pro had sensor-related bugs.

Settings → System Update → Check for Updates

If there are no official updates, you can install custom firmware (for example, LineageOS or Pixel Experience), but this requires unlocking the bootloader and may deprive you of warranty.

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If the sensor is only unstable in certain applications (like WhatsApp or Telegram), try clearing the cache of those programs or reinstalling them, often in conflict with MIUI optimizations.

Hardware repair: when without service can not do

If software methods didn't work, it's probably a physical malfunction of the sensor or the plume. In the Mi 10T Pro, replacing the proximity sensor is a challenge, because it's part of the display module.

• 🔧 Replacement of protective glass: if the sensor does not work due to cracks or contamination, sometimes it is enough to reglue the glass (cost: 1,500–3,000) ₽).
• 🔄 Coil replacement: if a flexible cable is damaged, it can be replaced separately (cost: 3,000–5,000) ₽).
• 📱 Replacement of the display module: in case of damage to the matrix or touch layer, a complete replacement of the screen will be required (cost: 10,000-15,000) ₽).
• 🔬 Micro soldering: if the sensor contacts are gone, they can be soldered again (cost: 2000-4000) ₽).

The average cost of repairs in official Xiaomi service centers is from 4 000 to 12 000 rubles, depending on the nature of the breakdown. in informal workshops, the price may be lower, but there is a risk of using non-original parts.

⚠️ Note: When replacing the display in Mi 10T Make sure the Pro is checked to transfer the original proximity sensor from the old screen to the new one, otherwise the sensor may not work properly or at all.

Prevention: how to prolong the life of the sensor approach

To avoid proximity sensor issues in the Xiaomi Mi 10T Pro, follow these guidelines:

• 🛡️ Use high-quality protective glass – cheap films can block infrared signals.
• 🧴 Clean the top of the screen of fat and dust regularly (use a lilac-free napkin and isopropyl alcohol).
• 📵 Avoid falls and bumps – even minor mechanical impacts can damage the plume.
• 🔋 Avoid overheating – do not use your phone when charging in games or benchmarks for long periods of time.
• 💧 Protect from moisture – even a little humidity can cause contact oxidation.

It is also worth turning off the automatic brightness adjustment in the display settings if you notice that the light sensor (which works in tandem with the proximity sensor) has become malfunctioning.

Settings → Display → Automatic Brightness → Disable

This will reduce the load on the sensor module and extend its service life.

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If the proximity sensor started to fail after the MIUI update, try rolling back to the previous firmware version. In some builds (for example, MIUI 13.0.4), bugs with the sensors were detected.

Frequently asked questions