Disassembly Xiaomi Mi A2 Lite: detailed instructions with photos and repair tips

Xiaomi Mi A2 Lite

In this article, you will find step-by-step instructions with photos of key steps, a list of necessary tools and unique tips to help avoid typical errors. We will analyze not only the standard disassembly for replacing a battery or screen, but also the nuances of working with flexible plumes, disconnecting connectors and checking the integrity of components after assembly.

If you've never taken a smartphone apart before, start by watching YouTube videos of the Mi A2 Lite disassembly, which will help visualize the process. But remember, even experienced craftsmen sometimes experience a touchscreen plume break when the screen is sloppy, which requires maximum concentration.

Preparation for disassembly: tools and precautions

Before you start disassembling, prepare the workspace and tools. Xiaomi Mi A2 Lite has 15 screws of different types (including Y000 and Phillips #00), so it is important not to confuse them when you build them back.

• 🔧 Sets of screwdrivers: cross Phillips #00, flat 1.5 mm, torso T3 and Y000 (screw-tray SIM-map).
• 🧲 Magnetic mat or screw container – to avoid losing small details.
• 📱 Plastic mediators (2-3 (p.c.) to separate the back cover and the screen.
• 🔥 Dryer or thermo-air station (temperature 60-80)°C) for softening the glue.
• 🧴 Isopropyl alcohol 90%+ and a hairless napkin - to clean contacts.
• ⚡ Antistatic bracelet (optional but recommended for chip protection).

Be sure to turn off the smartphone and remove SIM-If the battery is swelling, don't use a hair dryer, it can cause fire, so you should contact the service center right away.

⚠️ Warning: Do not touch the board with your bare hands for metal elements (such as a screen or antenna frame).Static electricity can damage the chips even if you do not feel the discharge.

Removing the back cover: combating glue and latches

The back cover of the Mi A2 Lite is attached to glue and plastic latches. To remove it, heat the edges of the body with a hairdryer for 2-3 minutes, holding the device at a distance of 5-7 cm. Do not overheat - temperatures above 80 ° C can deform the plastic.

Then proceed as follows:

1. Insert a plastic mediator into the gap between the lid and the frame (start at the bottom edge, next to the USB-C connector).
2. Carefully drive the mediator along the edge, gradually separating the lid, and you will hear the characteristic clicks - this is the latches detached.
3. Don’t push the lid too hard – underneath it are the fingerprint scanner plumes and NFC antennas (if any).

If the lid doesn't respond, reheat the problem area. Don't use metal tools, they'll scratch the body.

• 🔋 Battery with power plume (stick to the body).
• 📶 Antenna modules (do not touch them unnecessarily).
• 🛠️ Metal plate covering the motherboard.

⚠️ Note: On some versions of the Mi A2 The fingerprint scanner's Lite plume is glued to the lid, and if you tear it off, you'll have to change the entire module (cost). ~1500 rubles.).

Battery Disconnection: Why It's Critical to Do It First

Before touching the motherboard or plumes, be sure to turn off the battery.This will prevent short circuits that could knock out the power controller or processor. On the Mi A2 Lite, the battery connector is under the metal plate (see photo below).

Procedure:

1. Carefully tuck the plate with a Phillips screwdriver #00 and remove it.
2. Disconnect the battery plume with a plastic mediator (not metal!) and pull behind the black plastic tongue, not the wires.
3. Check with the voltmeter that the voltage at the contact plate is 0 V (optional, but recommended for safety).

If the battery is swelling, don't try to pull it out by force.

• 🔨 Place a plastic card under it and carefully lift it.
• 🧴 Apply a drop of isopropyl alcohol on the glue - this will weaken the fixation.
• 🚫 Do not puncture the battery – it can lead to a fire!

Extraction of the motherboard: work with plumes and connectors

The Mi A2 Lite motherboard is mounted with 11 different size screws, and remember their location, because when you build the propellers from the speaker and the camera, you can't confuse them with the propellers of the board.

Procedure for disconnecting plumes:

1. Main camera plume (black connector next to the upper edge of the board).
2. The display plume and touch screen (white connector, fixed by a latch).
3. The charging connector plume (small black connector at the bottom).
4. Antenna cables (detached last, as fragile).

To collect the fee:

• 🔧 Carefully tuck it with a plastic mediator on the right side (there are no components there).
• 📏 Do not pull the fee over the edges - it has a microphone and a vibrator motor that can be torn off.
• 🔍 Check if there are any small screws left under the board (especially under the speaker).

💡

If the plume doesn't detach, don't use force. It's probably a latch, and you need to carefully put it in the side with a screwdriver, rather than pulling the wires.

Replacement of the screen: how not to damage the touchscreen and plumes

The Mi A2 Lite screen is one of the most vulnerable, and the main danger when replaced is a break in the touchscreen plume that runs under a metal frame.

• 🔥 Warm up the screen with a hair dryer (temperature 70)°C) for 3-5 minutes.
• 📱 Insert a plastic mediator into the gap between the screen and the frame (start with the lower right corner).
• 🛠️ Raise the screen gradually, no more than 2-3mm at a time.

After screen separation:

1. Disconnect the display and touch screen plumes (white and gray connectors on the board).
2. Check the integrity of the plumes – if there are tears, they need to be replaced.
3. When installing a new screen, apply a new double-sided tape (0.2 mm thick) around the perimeter.

⚠️ Warning: If you have stripes or artifacts after you change the screen, check: Accommodation density of plumes in the connectors. Contact integrity (possible oxidation). Resolution settings in Settings → Display.

💡

When replacing the screen with the Mi A2 Lite, be sure to use an original or certified module. Cheap Chinese counterparts often have problems with color reproduction and touchscreen sensitivity.

Phone Assembly: How to Avoid Errors and Check Out Your Operability

The Xiaomi Mi A2 Lite should be assembled in reverse order, but taking into account several nuances:

• 🔋 When connecting the battery, make sure that the plume is not twisted and stretched.
• 📶 Antenna cables should lie flat, without inflections.
• 🔧 Screw the screws cross-curl to avoid skewing the board.

After assembly, be sure to check:

1. Charging – connect the cable and make sure that charging is underway.
2. Touchscreen – Test multi-touch in the Touch Screen Test app.
3. Cameras – Take a photo on the main and front camera.
4. Fingerprint scanner – add a new print and check for unlocking.

If something's not working:

💡

Once assembled, turn the phone on in Fastboot mode (keep Volume down + Power) and check if the device is detected on the PC. This will help diagnose payment problems.

Frequent Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when disassembling the Mi A2 Lite, and here are the most common ones and ways to prevent them:

• 🔌 Battery plume breaks when you try to tear off the glued battery without heating up. Always use isopropyl alcohol to loosen the glue.
• 📱 The damage to the flexible plume of the screen, most often tears when the display is sloppy, warm up the glue and use thin mediators.
• 🔧 Loss of screws in Mi A2 Lite screws of different lengths. Store them in a magnetic mat marked with a marking.
• ⚡ Short circuit: This occurs when you touch the board with metal tools.
• 📶 Damage to antenna cables -- they're fragile and easily detachable.

If you're experiencing a malfunction after assembly, don't panic. 80 percent of the time, it's re-disassembly and contact checks, for example, if the phone doesn't turn on but vibrates when you connect the charger, it's likely that the display or battery plume isn't connected.

⚠️ Warning: If the phone runs out quickly after battery replacement, check: Power plume integrity (microcrack possible). Power saving settings in Settings → Battery: New battery condition (may be married).

FAQ: Answers to Frequent Questions