Replacement of the display on Xiaomi Mi A1: detailed guide with nuances

Xiaomi Mi A1 — The iconic 2017 smartphone that is still in demand today thanks to its clean Android One and balanced specs, but over time, even the most reliable display can fail: cracks from falls, broken pixels, a broken touchscreen or flashing backlights. If you are faced with one of these problems, do not rush to carry the phone to the service - replace the screen with Mi. A1 You can save up to 70% of the cost of repairs.

In this article, you will find detailed instructions with photos of key stages, a list of necessary tools, tips for choosing an original or high-quality analogue of the display, as well as unique nuances for this model (for example, working with the camera plume and the features of mounting the frame).

Before you start, evaluate your strength: repair requires accuracy, patience and minimal skills with small details. If you have never taken down a smartphone, practice on an old device or watch video disassembly Mi. A1 YouTube (recommended Fixez or Repair Universe channels).

Signs of Display Failure: When Replacement Is Needed

Not every screen problem requires a complete replacement, sometimes just reconnect the plume, flash the device or replace individual components (such as a touchscreen), and here are the exact symptoms for which the entire display module needs to be replaced:

• 💥 Cracks or broken glass – even if the touch works, shrapnel can damage hands or internal components.
• 🔳 Black bars, broken pixels or “web” – a matrix defect that is not fixed programmatically.
• 👆 Touchscreen does not respond to touch (or partially responds) – if reconnecting the plume did not help.
• 💡 Blinking backlight or uneven brightness - a problem with LED-lighting.
• 🔴 "Rainbow spots or color distortion – damage to liquid crystals in the matrix.

If the screen is not turned on at all, first check:

• 🔋 Battery Charging (Plug to ROM for 30 Minutes).
• 🔌 The performance of the plume display (when disassembling, check for damages).
• 🖥️ PC connection – if the phone is defined as Qualcomm HS-USB QDLoader 9008, the problem is in the firmware, not the display.

⚠️ Attention: If the screen starts to ripple when pressed after the fall, but the image remains clear, the display plume or the battery most likely has left!

Choosing a display for Xiaomi Mi A1: original vs analogue

The quality of the new screen depends on 90% of the success of the repair. A1 Three types of displays are available:

For Mi. A1 critically choose a display with the right plume connector - the model uses 30-pin connector with an asymmetrical arrangement of contacts:

• 🔹 Original: Tianma NT35596 FHD or JDI Japan Display.
• 🔹 Good analogue: BOE NT35596 or AUO B156HAN05.0.
• 🔹 Bad analogue: without marking or with the inscription "For Mi" A1" without specifying the matrix manufacturer.

Before buying, check the complete set:

• 📦 The box must have a display (matrix) + touchscreen + frame).
• 🔧 Adhesive tape for fixing the plume (often comes complete).
• 🧲 Magnetic stickers for Hall sensor (unless they are carried from the old screen).

⚠️ Attention: Displays for Mi A1 mi 5X (The Chinese version is not interchangeable! 5X Another camera power plume and the screen won't fit physically.

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Before buying, ask the seller to send a photo of the back of the display - there should be a production date (fresh matrix last longer).

Tools for replacing the display: the full list

For disassembling Xiaomi Mi A1 You'll need it:

Screwdriver. T3 (Torx for screw frame|

Plastic mediators (2-3 pieces) for screen separation|

Suction (better 5-7 cm in diameter)|

Tweezers with curved ends|

Dryer or thermo-air station (temperature 60-80)°C)|

Scalpel or knife to remove old glue|

Isopropyl alcohol (90%+) cleaning|

Double-sided tape or glue B-7000 plume-fix|

Antistatic bracelet (optional, but recommended)|

Loop or magnifying glass (for working with small details)

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Pay special attention to plastic mediators – they must be thin (0.1-0.15 mm) and flexible so as not to damage the plumes. Metal tools can not be used!

If you do not have a thermophene, you can do with a regular hair dryer, but:

• ⚠️ Do not heat the screen for longer than 2-3 minutes at a time.
• ⚠️ Keep your hair dryer 10-15 cm away so you don’t melt plastic clips.
• ⚠️ Heat evenly, starting from the edges, not from the center.

To check the performance of the display after installation, test software will be useful. Download in advance:

• 📱 Display Tester (checking broken pixels and touch).
• 📱 CPU-Z (viewing).

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The most common mistake in disassembling Mi A1 — damage to the flexible plume of the camera that goes under the battery!

Step-by-step: how to disassemble Xiaomi Mi A1

Disassembly of Mi A1 It's more complicated than many modern smartphones, because of the metal frame and the adhesive connection of the display:

Step 1: Turn off and prepare

1. Turn off the phone and remove SIM-Cards and memory card (if any).

2. heat the screen edge dryer (not the center!) for 2-3 minutes. Temperature should be 60-80°C – Check with your hand (should be hot but tolerant).

3. glue the suction cup to the bottom of the display (where the charging connector is).

Step 2: Display separation

1. Pull gently by the suction cup to create a gap between the screen and the frame.

2. Put a plastic mediator in the slot and slowly lead it around the perimeter, separating the glue. Take your time - the clips hold tighter at the corners!

3. Once the screen is separated, don't lift it up too much - it's still connected by plumes!

Step 3: Turn off the plumes

1. Carefully raise the screen to 45.° And then you put it on a box of tape).

2. Unscrew 4 screws (Torx) T3), which hold a metal plate over the plumes.

3. With a pincet or plastic blade, click the connectors:

• 🔌 Display plume (widest, 30 contacts).
• 🔌 Touchscreen plume (thin, 10-12 contacts).
• 📷 The front camera plume (caution - it's fragile!).

Step 4: Dismantling the Old Display

1. Take the screen off completely and put it on the table with the display down.

2.With a scalpel or knife, remove the old double-sided scotch from the frame of the new display.

3. Transfer to the new screen:

• 🧲 Magnetic stickers for the Hall sensor (if any).
• 🔊 Speaker and mesh (gently dent and glue).
• 📷 Front camera and light sensor (they are glued to old glass).

⚠️ Attention: On Mi A1 The camera plume runs under the battery, and if you need to disconnect it (for example, to replace it), first turn off the battery (click the connector on the board) - otherwise you risk shorting the fee!

Installation of a new display and assembly of the phone

Now, the most important step is to install the new screen, and it's important to avoid three mistakes.

1. 🔌 Incorrect connection of plumes (will lead to flickering or absence of image).
2. 🧲 Metal dust hitting contacts (can shorten the fee).
3. 🔩 Tug screws (damage the connectors on the motherboard).

Step 1: Preparing a new display

1. Remove the protective film from the inside of the new screen (there may be a transport gasket).

2. glue to the frame of the new display:

• 🔊 Speaker and mesh (use glue) B-7000 double-scotch).
• 📷 Front camera and sensors (carefully align the holes!).

3. Check that the plumes are not contaminated or burrs - wipe the contacts with alcohol.

Step 2: Connecting the plumes

1. Connect the plumes in reverse order:

• 📷 Front camera (the most fragile - first of all, the camera).
• 👆 Touchscreen (thin plume).
• 📺 Display (wide) 30-pin plug-in).

2 Make sure the plumes are fully in the connectors -- they have to click. If the connector is not fixed, check if the plume is bent.

3. Close the plumes with a metal plate and twist 4 screws (do not pull!).

Step 3: Install the display on the frame

1. Carefully place the screen on the frame, aligning the holes for the speaker and camera.

2. Press the edges of the display to "stick" to the residues of old glue. If there's not enough glue, use double-sided tape. 3M (thickness 0.1–0.2 mm).

3. warm up the screen edge with a hair dryer (30-40 seconds) and press it evenly throughout the area.

Step 4: Check before final assembly

1. Connect your phone to charge (don't turn it on!) If the charge image appears on the screen, the display works.

2. Turn on the device and check:

• 🎨 Color rendering (whether there is yellow or greenish tint).
• 👆 The work of the touch screen (test in Display Tester).
• 📷 Front camera and sensors.

2 If everything works, turn off the phone and complete the assembly:

• 🔩 Twisting the screws of the frame (do not pull over the frame!).
• 📶 Put it in. SIM-memory-card.

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If the touchscreen is mirrored after assembly (pressings are recorded in the opposite part of the screen), then the plume is connected upside down. Disassemble the phone and flip the touch connector.

Calibration of the new display and adjustment after replacement

Even if you have the original display installed, sometimes you need software setup to get the touchscreen and color rendering right.

1. Touchscreen calibration

If the touchscreen reacts inaccurately (for example, the presses are recorded with a bias), calibrate:

1. Download the Touchscreen Calibration app from Google Play.
2. Run the test and follow the instructions on the screen (usually click 5-10 points).
3. Reboot the phone.

Color rendering adjustments

On Mi. A1 You can adjust the balance of colors:

Go to Settings. → Display. → Colors and select:

• 🌈 Standard – Natural Colors (recommended for the original display).
• 🔆 Saturated - bright colors (may look unnatural on cheap analogues).
• 🌓 Warm/Cold – Color Temperature Adjustment.

Verification of sensors

Make sure that the following work:

• 💡 Light sensor (automatic brightness control).
• 🔄 Approximation sensor (turning off the screen during a call).
• 🧲 Hall sensor (for magnetic lock cases).

If the sensors are not working, check:

• 🔌 Connect the front camera plume (sensors go through it).
• 🧲 Transfer of magnetic stickers from the old display.

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If after replacing the display, the phone began to discharge faster, check the mode of the processor in Settings → Battery. Sometimes a breakdown failure resets energy optimization.

Common Mistakes and How to Avoid Them

Even experienced masters sometimes make mistakes when replacing the display with Mi. A1. Here are the most common problems and their solutions:

If after replacing the display, artifacts (strips, flickering) appeared, the reasons may be as follows:

• 🔌 Bad contact in the plume connector - try reconnecting.
• 🔥 Overheating of the matrix during soldering - if the dryer was warmed for too long.
• 🛠️ Marriage of the display - especially often with cheap analogues.

⚠️ Note: If after replacing the display, the phone is not detected by the computer in Fastboot mode, chances are you have damaged the device. USB-The jack will be replaced when it is disassembled).

FAQ: Frequent questions about replacing the display with Mi A1