Xiaomi’s Redmi line of smartphones is deservedly famous for their reliability and availability, but even the highest-quality device requires maintenance over time. The Redmi 5 Plus model, also known as the Redmi Note 5 (global version), is no exception and often needs to replace the battery or restore a broken display. Self-disassembly of the gadget is a great way to save money on the services of a service center if you have minimal skills with small electronics.
The process of dismantling the Xiaomi Redmi 5 Plus has its own characteristics that distinguish it from more modern models with frameless screens. It uses a classic design with a separate back cover, which greatly simplifies access to internal components. However, despite the apparent simplicity, it is important to strictly follow the sequence of actions so as not to damage fragile plumes and plastic mounts.
In this article, we will take a detailed look at each step of disassembling your device, paying special attention to the nuances of turning off the plumes and safely removing the battery. You will learn what tools you will need to work and how to avoid common errors that can lead to a breakage of your smartphone.
Tools and workplace preparation required
Before you start dismantling Xiaomi Redmi 5 Plus, you need to organize a clean and well-lit workspace. Dust and static electricity are the main enemies of electronics, so it is recommended to wipe the table with a wet cloth and use an antistatic mat, if any.
To do this successfully, you'll need a specialized toolkit that you can buy from radio parts stores or marketplaces. Using inappropriate items like kitchen knives or thick screwdrivers can damage the body and insides. A quality tool is the key to quick and safe repairs.
- 🔧 Precision screwdrivers (cross-hatched) PH000, PH00) motherboard-screw.
- 📏 Plastic mediators (scapula) for neat opening of the body without scratches.
- 🌡️ Thermal dryer or heating pad for softening the adhesive base of the display (if it is planned to replace it).
- 🧲 Magnetic mat or organizer for sorting screws of different sizes.
⚠️ Warning: Never use metal blades or knives to smack the back cover, as there is a high risk of damaging the fingerprint scanner plume or antenna modules located around the perimeter.
Special attention should be paid to the choice of screwdriver, as screws in the Redmi 5 Plus have different lengths and threads. Incorrectly sized sting can lick the screw hats, which will turn a simple repair into a difficult task to drill the fastener.
☑️ Preparation for the dismantling of Redmi 5 Plus
Rear cover removal and initial access
The process of disassembling the Redmi 5 Plus begins with the removal of the rear panel, which is made of metal and is fixed to two-component glue and latches. Unlike glass models, the metal case conducts heat better, but requires accuracy when heated so as not to deform the plastic of the internal frames. SIM-Memory cards and cards to reduce internal pressure.
To separate the lid, it is recommended to use a suction cup, which should be attached to the bottom of the back panel, closer to the Redmi logo. If there is no suction cup, you can carefully tuck the lid with a mediator near the junction with the frame, but you need to do this extremely carefully so as not to bend the metal. Gradually moving along the perimeter, you will hear the characteristic clicks of the opening latches.
Nuances of the glue layer
Once all the latches on the sides have been snapped, don't rush to pull the lid off abruptly. At the top of the device, next to the main camera module, there's a fingerprint scanner plume that connects the scanner to the motherboard, and a sudden movement is guaranteed to cause it to break. Carefully lift the lid and immediately disconnect the scanner connector.
Removal of the protective plate and disconnection of plumes
When you take the back cover off, you'll see the inside of your smartphone, where most of the components are covered by a black plate of plastic or metal, and this plate is mounted by a lot of screws of different calibers, and this is where you most often make mistakes when sorting them, and it's important to remember or photograph the location of each screw, because they vary in length within millimeters.
The screws around the plugs for connecting the display and touchscreen plumes are usually shorter than those that attach the bulk of the plate. Swirling a long screw into a short hole can cause the motherboard to break through, causing the device to fail without recovery. Use a magnetic mat to lock positions.
| Fixing zone | Type of screw | Risk of error |
|---|---|---|
| Around the display connectors | Short (L2.5) | High (fare breakdown) |
| Central part of the fee | Medium (L3.5) | Medium (plate skew) |
| Lower part (dynamics) | Long (L4.0) | Low (not fitting in the hole) |
| Vibrator fastening | Specific | Medium (loss of contact) |
When the safety plate is removed, the first thing you need to do is to disconnect the battery from the motherboard, using a plastic shoulder blade or gloved finger to gently snap the battery connector, and only after it is turned off can you disconnect the display plumes, the touchscreen, the main and front cameras, and the bottom charging plume.
Removal of the battery
Replacing the battery in Xiaomi Redmi 5 Plus is one of the most frequent procedures, as over time the battery capacity decreases and the phone stops holding charge. The battery in this model is glued to the front frame sufficiently firmly, and it will take patience to remove it. Do not try to tamper with metal objects, as a puncture of the lithium polymer cell can cause fire.
The best way to extract is to use a thin line or a special hood with suction cups. The line is wound by the end of the battery and cut the glue layer with sawing movements. Before the procedure, it is recommended to warm up the back of the smartphone slightly (if the lid is already removed, you need to warm carefully, controlling the temperature), or use a special glue solvent if available.
After removing the old battery, clean the seat of glue residue with an alcohol wipe. Install the new battery, making sure its connector matches the connector on the board. Note: the Redmi 5 Plus uses a battery with the code BN44, and using analogues with other codes can lead to incorrect operation of the power controller.
- 🔋 Check the voltage of the new battery with a multimeter before installation (should be near the 3.7-3.8 V).
- 🧹 Degrease the seat with alcohol for better gluing of the new battery.
- 🧪 Use double-sided scotch or special glue B-7000 fixative.
- 🔌 Do not connect the battery until all other connections are fully checked.
⚠️ Warning: If a new battery swells immediately after being removed from the package or in the process of operation, immediately stop using it. Bloating indicates a leakage and chemical processes inside the cell, making it dangerous to operate.
Removal of the display module and touch screen
To replace a broken display in the Redmi 5 Plus, you need to remove the metal frame to which it is glued. The screen here is mounted around the perimeter on a powerful adhesive layer that requires heating to soften. The use of a hair dryer should be dosed: overheating can damage the matrix or melt plastic frame elements.
Heat the front panel evenly on all sides for 2-3 minutes at about 80-90 degrees. After heating, use a suction cup and a mediator to create a gap between the glass and the frame. Move slowly, cutting the glue, and do not exert excessive effort in the center of the screen where the layers of the matrix are located.
When installing a new module, make sure that the frame is free of shards of old glass or glue lumps that can create a pressure point and lead to cracks in the new display. Uniform fit is a key factor in the durability of the replacement. After installation, check the touchscreen before the final assembly of the case.
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Use rubber harnesses or special clips to fix the new display to the frame for the time the glue is drying (about 30-60 minutes) to ensure maximum adhesion.
Working with the lower board and speakers
The bottom of the smartphone contains a charging board, a microphone, a 3.5mm headphone jack and a main speaker. Often users are faced with a problem when the interlocutor does not hear them, and you need to change the bottom microphone or clean the contacts.
The charger board is screwed and connected to the motherboard by a long plume that runs along the battery, and when you replace the circuit board, it's important to carefully stack the plume in the guide channels so that it doesn't get worn or pinched when you build it, and there's also a vibrator motor that can be replaced if necessary.
The speaker in the Redmi 5 Plus is pressed with a metal mesh and a plastic case. When disassembling, the plastic sound channel often breaks, which leads to a quiet sound. Be extremely careful when snapping the plastic retainers of the speaker, as the plastic becomes brittle over time.
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Quality sound and charging depend on the density of the bottom board contacts; always check the gilding condition on the connectors before assembly.
Assembly of the device and verification of functionality
The Xiaomi Redmi 5 Plus is built in reverse order, but requires increased attention to detail. Start by connecting all the plumes to the motherboard, making sure that each connector is up to the click and evenly. The skewed plume can lead to a missing image or a broken touchscreen.
Once the plumes are plugged in, plug the battery in and briefly turn the phone on without twisting the screws, which will allow you to check the display, touchscreen, cameras, sound and charging, if everything is working correctly, turn off the phone, turn off the battery and continue building the case.
When you install the back cover, apply a new layer of glue or use adhesive tape around the perimeter. Press the lid evenly around the perimeter and lock the rubber bands on the perimeter. 15-20 You don't turn on the phone right away, give the glue time to build up.