Step-by-step disassembly of Xiaomi Redmi Note 5 Pro: from the back cover to the motherboard

The Xiaomi Redmi Note 5 Pro is one of the most popular smartphones of 2018, but even it is not immune to breakdowns. A broken screen, a bloated battery or a faulty speaker all require disassembling the device. However, improper dismantling can lead to damage to the plumes, the failure of the screws or even the failure of the motherboard.

In this article, you will find a detailed guide to disassembling the Redmi Note 5 Pro, taking into account all the nuances from tool selection to the removal of the last screw, we will examine the unique features of this model, for example, why its back cover is attached not only to the latches, but also to the glue, and how to avoid damage to the flexible plume of the fingerprint scanner. If you have never disassembled a smartphone before, our instructions will help you do this as safely as possible.

Preparation for disassembly: tools and precautions

Before you start disassembling, make sure you have everything you need. Xiaomi Redmi Note 5 Pro is not the most difficult to repair smartphone, but it requires care.

• 🔧 Set of screwdrivers (cross-haul) PH00, flat 1.5 mm, five-pointed Y00 screw-tray SIM)
• 📱 Plastic mediators (2-3 (pc.) or guitar mediators for lid separation
• 🔥 Dryer or thermo-air station (to soften the glue under the cover)
• 🧲 Magnetic mat or screw container (so as not to lose small details)
• 🔍 Loop or magnifying glass (to inspect small connectors)
• 🩹 Alcohol and cotton swabs (to clean contacts)

Also, prepare the workplace: the desk should be clean, well-lit, and without static electricity. SIM-A memory card will prevent short circuits from accidentally touching the board, and if you're disassembling your phone because of a bloated battery, you need to be very careful about it, so don't puncture it, don't put it under mechanical stress.

⚠️ Note: If your Redmi Note 5 Pro was in water or was subjected to severe vibration (for example, after a fall), disassembly can lead to permanent failure.

Removing the back cover: how not to break the latches

The back cover of the Xiaomi Redmi Note 5 Pro is mounted on a combination of glue and plastic latches, which means that you can't just tamper with a mediator, you have to soften the glue first. Here's a step-by-step algorithm:

1. Heat the cover with a hair dryer (~60°C) for 2-3 minutes, evenly driving around the perimeter. Don't overheat - the plastic can deform!
2. Insert the plastic mediator into the gap between the lid and the case (start at the lower left corner where the SIM tray notch is located).
3. Carefully lead the mediator around the perimeter, without putting excessive effort - the latches should be snapped with a slight crack.
4. When the lid is detached, don't remove it completely -- there's a fingerprint scanner plume underneath it, and you have to disconnect it first.

If the lid doesn't work, don't try to pull it off by force. You better warm up the problem areas again. A typical beginner's mistake is to start at the top of the fingerprint scanner, which can lead to a plume break!

After removing the cover, you will see:

• 🔋 Battery with connected connector
• 📸 The camera and its plume.
• 👆 Fingerprint scanner plume
• 🔊 Dynamics and vibration motor

⚠️ Note: Some Redmi Note 5 Pro models may have an extra protective film under the lid. Don't confuse it with glue, it's easy to remove and doesn't require heating.

Disconnecting the battery and removing the motherboard

Before you touch any components, be sure to turn off the battery.

1. Carefully apply the battery connector with a plastic spatula (not a metal screwdriver!).
2. Unplug the plume by pulling it up.

Now we can start to remove the motherboard, and it's mounted on 12 different types of screws.

• 🔩 8 crusaders (PH00)
• 🔩 2 five-pointed (Y00) tray-tray SIM
• 🔩 2 flat (1.5 mm) at the charging connector

Follow the order of unwinding:

1. First, screws around the board perimeter.
2. Then the screws are under metal protection (it must be carefully removed).
3. Last of all, the screws at the charging connector.

After unscrewing all screws, the board can be removed, but be careful: it is connected to the body with several plumes:

• 📞 Display plume
• 🔊 Lower microphone plume
• 📶 Antenna wires (they are easy to tear off!)

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Take a picture of the location of the screws and plumes before turning off – this will help to assemble the phone without errors.

Disassembly of the screen and replacement of the display

If you need to replace a broken screen or display module, proceed as follows:

1. Turn off the battery plume (if you haven’t already).
2. Heat the screen perimeter with a hair dryer (temperature ~70°C) - this will soften the glue.
3. Insert the plastic mediator into the gap between the screen and the frame (start at the bottom where the plume connector is located).
4. Carefully drive the mediator around the edges, separating the screen.

When the screen separates, you will see:

• 📱 Display module (glued with glass)
• 🖥️ Display and sensor plume
• 🔋 Battery (if not already removed)

To replace the screen:

1. Disconnect the display plume from the motherboard.
2. Remove the old module and install a new one.
3. Connect the plume back (make sure the connector is snapped!).

⚠️ Note: On the Redmi Note 5 Pro, the screen and touchscreen are a single module. Only the glass without the display is impossible to replace - you have to change everything completely.

Battery replacement: nuances and warnings

The Xiaomi Redmi Note 5 Pro battery has a capacity of 4000 mAh and is mounted on double-sided scotch.

1. Turn off the battery plume from the board.
2. Put a plastic blade on either side of the battery and pull it up. If it doesn't lend itself, heat it with a hair dryer (maximum 60°C!).
3. Remove the remains of the glue from the body with alcohol.
4. Install a new battery and secure it with new double-sided tape (don’t use the old one!).

When replacing the battery, consider:

• ⚡ The new battery must be original or certified (e.g., from the ZMI Cheap analogues are losing capacity very quickly.
• 🔋 Do not use metal tools to tamper with the battery – this can lead to short circuits.
• 📉 After replacing the battery, calibrate it: fully discharge, and then charge to 100% without interruptions.

Common Mistakes in Disassembly and How to Avoid Them

Even experienced craftsmen sometimes make mistakes, and here are the most common mistakes in disassembling the Redmi Note 5 Pro and how to prevent them:

• 🔧 The screws are broken, because of the use of the wrong screwdriver. Always check the size and type of sting before unscrewing.
• 📱 Fracture of the fingerprint scanner plume – never pull the lid up without disconnecting the plume.
• 🔥 Plastic overheating – the hair dryer should be at a minimum temperature (maximum 80)°C).
• 💥 Short circuit – do not touch the board with metal tools when the battery is connected.
• 🧩 Loss of screws – use a magnetic mat or container with cells.

Another common problem is that antenna wires are thin and easily detached when the board is unscrupulously removed, and if you notice that the network or Wi-Fi signal deteriorates after assembly, check the integrity of the antenna contacts.

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The most vulnerable part of the Redmi Note 5 Pro during disassembly is the plume of the fingerprint scanner, its break leads to loss of functionality of the sensor, and replacing the plume requires soldering.

Assembly of the phone: procedure and verification

Assembling Xiaomi Redmi Note 5 Pro should be in reverse order, but taking into account several nuances:

1. Make sure all plumes are tightly connected – connectors should snap with a slight click.
2. Check the battery insulation – it should not touch the metal parts of the case.
3. Twisting the screws cross-cross to avoid skewing the board.
4. Before installing the lid, wipe its inside with a lilaless napkin - dust and fingerprints can spoil the appearance.

After assembly, be sure to check:

• 📞 The performance of the touchscreen and display.
• 🔊 Sound in the speaker and microphone.
• 📸 Camera (main and frontal).
• 👆 Fingerprint scanner.
• 📶 Network signal and Wi-Fi.

If something doesn't work, don't panic -- it's probably the wrong plume connection, so take the phone apart and check all the connectors.

FAQ: Answers to Frequent Questions