Disassembly Xiaomi Redmi 8 Lite: detailed instructions with photos and tips

Xiaomi Redmi 8 Lite is a budget smartphone with good repairability, but its disassembly requires care due to the fragile plumes and adhesive mounting of the battery. If you need to replace the display, battery or speaker, this manual will help you do everything right without damaging the internal components. We will analyze the process from detaching the back cover to removing the motherboard, point out typical errors and give recommendations on tools.

It's important to understand that self-disassembly is insecure (if it's still valid) and can cause failure if you've never taken a smartphone apart, practice on a non-functioning device or watch video guides before you start. In this article, we'll focus on the practical aspects of what screwdrivers you'll need, how to safely unplug the plumes, and what to do if the screws get stuck.

Preparation: security tools and measures

Before disassembling the Redmi 8 Lite, prepare the workspace and tools, use an antistatic mat or at least a table with a wooden surface, which will reduce the risk of damage to the chips by static electricity.

• 🔧 Set of screwdrivers (cross-haul) PH00, flat 1.5 mm, five-pointed Y00 screw-tray SIM)
• 🧲 Magnetic organizer or sticky tape for fixing screws (they are easy to lose!)
• 📱 Plastic mediators/scapula (metallic can scratch the body)
• 🔥 Dryer or thermo-air station (to soften battery adhesive, temperature not higher than 80)°C)
• 🧴 Isopropyl alcohol (90%+) and a squirrel-free wipe to clean contacts

If you are planning to replace the battery, buy a battery adhesive tape (e.g. 3M 9485) in advance - the original adhesive loses its properties after removal. Do not use superglue or scotch! Also check if the smartphone is discharged to 25-30%: a fully charged battery is dangerous when mechanically exposed.

⚠️ Warning: Do not disassemble the Redmi 8 Lite in humidity above 60% or in a dusty room. Moisture on the contacts can cause corrosion, and dust can short circuit when assembled.

Removing the back cover: secrets and pitfalls

The Redmi 8 Lite back panel is mounted on latches and glue. To remove it, heat the edges of the body with a hairdryer (keep it 5-7 cm away so that the plastic doesn't melt). Start at the bottom edge, there's a notch for the mediator. Put a plastic blade in and gently lead along the perimeter, alternately snapping the clips.

Common mistakes at this stage:

• 🔨 Too much pressure on the shoulder blade. → cracks on the cover or damage to antenna lines (they pass under plastic!).
• 🔥 Overheating with a hairdryer → camera deformation or detachment of display toning.
• ⚡ Skip clips in corners → The lid is not removed completely, but bends.

If the lid doesn't lend itself, check if all screws are twisted (there are 12 of them: 10 under the plugs and 2 under the SIM tray). The plugs can be tucked with a nail or a flat screwdriver - they are not on glue. After removing the lid, put it aside without touching the inside (there are antenna contacts!).

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

The battery in the Redmi 8 Lite is connected to the motherboard even when the smartphone is off. Any circuit break can burn the power controller! So first of all, unplug the battery. It's glued to the body, and to remove it:

1. Tap the black battery connector with a plastic spatula (it is located next to the daughter board).
2. Carefully pull the tongue of the connector upwards - do not pull the wires!
3. If the adhesive is too strong, heat the battery with a hairdryer (maximum 60°C) and put a thin plastic card under the battery to separate it from the case.

Don't use metal tools to smack the battery -- you're at risk of puncture and fire! If the battery is swelling (as seen from the bulge of the lid), don't disassemble the smartphone yourself -- call the service. Bloated batteries can explode when mechanically impacted.

Turn off your smartphone and wait for it to cool down (if it warms up)

Prepare a plastic spatula and tweezers

Make sure you have tape on hand (to fix disconnected plumes)

Check if there is any swelling on the battery-->

Extraction of motherboard and child modules

Once the battery is turned off, you can start dismantling the motherboard. In the Redmi 8 Lite, it is attached to 8 screws (noted in the photo below) and one metal screen that closes the memory chip.

1. So, keep them all in the same shape, and they will be different.
2. Disconnect the plumes: display (top), cameras (right), power buttons (bottom).
3. Carefully raise the charge for the edges, do not pull the connectors!

Notice the flexible plumes, which are fragile and can break when you move abruptly. If the plume is stuck in the connector, don't pull it: drop the isopropyl alcohol on the contacts and wait 10 seconds. Also check if there are any small parts under the board (for example, a vibrator) - they are easy to lose.

⚠️ Warning: If you see traces of oxidation (green coating) on the back of the board after you remove the board, clean the contacts with alcohol and check the tightness of the case. Humidity inside the smartphone often leads to corrosion even without visible damage.

Replacement of the display: nuances and common errors

The Redmi 8 Lite screen is attached to the glue and plume that goes to the motherboard.

1. Heat the edge of the screen with a hairdryer (temperature 70-80 ° C) and tuck it with a plastic spatula.
2. Carefully separate the display from the body, moving around the perimeter. Do not insert a blade deeper than 2 mm - there are plumes under the screen!
3. Disconnect the display plume from the motherboard (the connector is under the metal screen).

Errors in changing the screen:

• 🔥 Overheating → damage to the polarizing layer (divorces appear).
• ⚡ sharp break-off → contact break or damage to the display controller.
• 📱 Incorrect installation of the new screen → touchscreen.

When buying a new display, make sure that the package is adhesive side (it provides leakproofness).If the side is not, use double-sided 3M 467 or 468 Scotch. After installing the screen, check the touchscreen in the service menu (#4636##).

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If colored stripes appear after changing the screen, check the density of the plume adjacent to the connector. Sometimes it helps to lightly press the connector with your finger (when the smartphone is turned off!).

How to avoid problems after repair

The Redmi 8 Lite should be assembled in reverse order, but with a few rules in mind:

1. Before installing the battery, clean the contacts with alcohol - oxidation can cause charging problems.
2. Twirl the screws cross-cross (like the wheels of the car) to avoid skewing the board.
3. Check the operation of all buttons and connectors before final assembly.

Typical problems after assembly and their causes:

After assembly, turn on the smartphone and check:

• 📶 Network signal level (if antennas are damaged, communication will be poor).
• 🔋 Charging (plug the charger and make sure the current is going on).
• 🎵 The work of the speakers and microphone (record a voice note).

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If the smartphone overheats after assembly, the heat on the processor is likely to dry or the board is deformed, in which case a re-disassembly and replacement of the thermal interface is required.

Frequent questions about the Redmi 8 Lite