Disassembly Xiaomi Redmi 5: a step-by-step guide with photos and tips

Why to Disassemble Redmi 5 and What to Know Before You Start

Xiaomi Redmi 5 (codenamed rosy) is a popular 2017 model that is still in use today, and may need to be dismantled to replace the battery, repair the screen, clean connectors, or diagnose malfunctions, but improper dismantling often results in plumes being damaged, contacts being ripped off, or even a motherboard being broken.

Before you start, consider this: Redmi 5 is built on adhesive with brittle latches. There's no removable back cover like the old Samsungs, you'll have to work with a plastic panel glued to a metal frame. If you've never taken your smartphones apart, practice on an unnecessary device or watch video reviews. A key mistake for newcomers is to try to slap the lid around the antenna lines (top and bottom of the case) where the flexible plumes pass.

This article includes step-by-step photo analysis, tool lists, typical problems and tips for reverse assembly. If the goal is to replace the battery, look for the original 3300 mAh batteries (article MBJ406011). Other tasks (such as repairing the display) may require a soldering station and experience with microelectronics.

Tools required: What to prepare in advance

To disassemble Xiaomi Redmi 5 will not fit the improvised tools like a knife or a screwdriver for glasses.

• 🔧 Plastic mediators (2-3 pieces) - for careful licking of the lid. Metal tools scratch the body and can damage the plumes.
• 🔨 Cross screwdriver (size) PH00) — It's a motherboard screw. PH0 Not suitable: screw heads in Redmi 5 miniature.
• 🧲 Magnetic mat or container - so as not to lose the screws (there are 12 pieces, all of different lengths!).
• 🔥 Hair dryer or thermoplatform - for softening the glue (temperature 60-80)°C) The lid will not respond without heating.
• 🧴 Isopropyl alcohol (90%+) — cleaning glue residues and contacts.
• 🔋 Suction (optional) - helps to raise the screen after heating.

If you are planning to replace the battery, add to the list:

• 🔄 New battery (original or qualitative analogue of the Baseus/Remax).
• 🧴 Clay. B-7000 or bilateral tape - to fix the battery.
• 🔌 Multimeter – to check the voltage on the contacts (should be ~3.8V).

⚠️ Warning: Do not use a hair dryer, it does not give an exact temperature and can overheat the screen.

Step 1: Removing the back cover – how not to damage the plumes

Start by turning off your phone and retrieving it. SIM-Next up:

1. Heat the back cover with a hair dryer for 2-3 minutes, evenly moving on the surface. Pay special attention to the edges - there the glue is most dense.
2. Insert a plastic mediator into the gap between the lid and the body at the Type-C connector (bottom). Carefully drive the tool along the edge, separating the glue. Don't push too hard - there are antenna plumes under the lid!
3. Once the mediator has passed 2/3 of the perimeter, lift the lid. If it doesn't respond, warm up for another 1 minute.

Common mistakes at this stage:

• 🚫 Fingerprint lid on the top side (there is a fingerprint scanner plume).
• 🚫 Using metal tools – they cut through plastic and damage antennas.
• 🚫 Strong heating (above 90)°C) - melts the glue and deforms the body.

After removing the cover, you will see:

• 🔋 Battery with connected connector.
• 📱 Motherboard closed with metal screen.
• 📡 Antenna modules and fingerprint scanner plume.

Step 2: Shutting down the battery – why it’s critical

Before touching the motherboard, be sure to turn off the battery, otherwise you risk closing contacts, which will lead to:

• 🔥 Burning out of the power controller (PMIC).
• 💥 Data loss (if the eMMC memory is closed).
• 🔌 Out of action. USB-port.

Instructions for unsetting:

1. You can put a plastic blade on the battery socket, and it's on top of the battery, and it's locked in a latch.
2. Carefully lift the connector up. Don't pull the wire!
3. Check the voltage on the battery contacts with a multimeter - it should be 0V.

⚠️ Warning: If the battery is swelling (as seen from the deformation of the lid), do not try to remove it yourself. Bloated batteries can ignite if punctured!

Step 3: Removing the motherboard - screws and plumes

The Redmi 5 motherboard is mounted on 12 screws of different lengths, and it's important to remember their location:

Procedure:

1. Unscrew all the screws and fold them into groups (for example, on a magnetic mat with markings).
2. Disconnect the plumes: 📸 Main and front camera modules. 🔊 Dynamician and microphone. 📡 Antenna plumes (3 pcs.).

Carefully tuck the board into a plastic spatula, which can stick to the heat paste on the processor.

If the fee does not go away, check:

• ❌ Have you forgotten to unscrew the screws under the metal screen.
• ❌ Is the fingerprint scanner still connected (it is thin and easily torn).

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Take a picture of the location of the plumes before turning off - this will greatly simplify the reverse assembly.

Step 4: Replacing the battery – the nuances and risks

The battery in Redmi 5 is glued to the body with double-sided tape.

1. Put a plastic blade on the side of the battery (not the end!) If the glue is too strong, put the isopropyl alcohol under the battery, and it will dissolve the adhesive.
2. Do not pull the battery by the wires - they are soldered to the board and can come off.
3. After extraction, clean the body of glue residues with alcohol.

When installing a new battery:

• 🔋 Use the original glue B-7000 double-scotch 3M 9448A.
• 🔌 Connect the connector to the board after fixing the battery - so you will avoid tensioning the wires.
• 📊 Check the voltage with a multimeter (should be 3.7–4.2V).

⚠️ Warning: If the battery is not turned on after the battery is replaced, check: Connection of the connector (it should click). Integrity of contacts on the board (is there any oxidation) Battery voltage (less than that). 3.5V — External charge required).

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Never use superglue or heat glue to fix the battery – they damage the battery and complicate future repairs.

Step 5: Disassemble the screen when necessary

Replacing the Redmi 5 is one of the most difficult procedures, and it's glued all around the perimeter, and underneath it, you go,

• 📱 Touchscreen plume.
• 🔊 The plume of the dynamics of conversation.
• 📡 Antenna wires.

If the screen is cracked, but the touchscreen works, you can limit yourself to replacing the glass (requires). UV-If the display is not working, you will have to change the entire module (LCD).+Touch).

Procedure:

1. Heat the screen with a hair dryer (temperature 70-80 ° C) for 3-5 minutes.
2. Suction lift the display from the bottom (where the Type-C connector).
3. Put the plastic mediators on the sides, gradually separating the glue. Be careful at the top - there are plumes!
4. Disconnect the display and touch screen plumes (they are fixed by latches).

The price of the new screen for Redmi 5:

Reverse Assembly: How to Avoid Mistakes

To assemble Redmi 5 you need to reverse order, but taking into account the nuances:

• 🔧 Screw them cross-curl to avoid board skewing.Start with corners.
• 🧲 Trains: Make sure they don't overflex and get under charge.
• 🔋 Battery: Connect the connector last when the charge is already fixed.
• 📱 Screen: Remove all dust particles before gluing them – they will be visible after assembly.

After assembly:

1. Connect the charger and check if charging is underway (the indicator should burn).
2. Turn on your phone and test it: 📶 Network and Wi-Fi (antennae). 🔊 Sound in the speaker and microphone. 📸 Cameras (front and main). 👆 Touch screen (touch screen).

⚠️ Warning: If the phone overheats or discharges quickly after assembly, check: Battery adhesion density (no gaps) Thermopaste integrity on the processor (apply a new one if necessary).

Frequent questions about the dismantling of Xiaomi Redmi 5