Disassembly Xiaomi Redmi 5A: instructions with photos, tools and warnings

Xiaomi Redmi 5A (codenamed riva) remains a popular device even years after its release — its reliability and maintainability make the model popular in the secondary market. However, disassembling this device has nuances: a fragile battery plume, adhesive back cover and the risk of damage to flexible cables when sloppy actions. In this article, you will find a step-by-step instruction with photos, a list of necessary tools and unique tips to prevent typical errors that lead to the device failure.

It's important to understand that the Redmi 5A takes patience and care. Unlike Xiaomi's flagship models, there's no modular design here, many elements are soldered or glued together. For example, the touchscreen and display module are a single unit, and the battery is glued to the body with double-sided tape. If you've never disassembled a smartphone before, we recommend that you practice on a non-functional device or watch video disassembly before work.

Preparation for disassembly: tools and conditions

Before you start, make sure you have everything you need, and if you don't have even one tool, you can damage the body or the internal components, and here's the minimum set.

• 🔧 Plastic mediators (2-3 - to separate the back cover and the battery. Metal tools cannot be used!
• 🔨 The screwdriver. PH00 — For the screws of the hull, size matters: PH00 It's perfect, but PH0 may break the slime.
• 🧲 Magnetic mat or tray – so as not to lose small screws (them in Redmi) 5A 12 pieces).
• 🔥 Dryer or thermo-air station - for softening the glue under the battery (temperature not higher than 60)°C!).
• 📏 Suction cups (2 pcs) - will help to lift the display module without scratches.
• 🧴 Isopropyl alcohol (90%+) — cleaner.

Also, prepare the workspace: the desk should be clean, the lights bright, and the hands dry. You can't work on a carpet or soft surface - static electricity can damage the motherboard. If you disassemble a battery replacement phone, buy the original battery in advance (article: MB69 or DM47 for the NFC version). Counterfeiting often has a smaller capacity and can swell.

⚠️ Attention: If your Redmi is 5A If you're in water or falling from a height, disassembly can be dangerous, a bloated battery or damaged contacts can cause a short circuit.

Step 1: Removing the back cover

The Redmi 5A's back cover is glued around the perimeter, but it also holds on the latches, so that it can be removed.

1. Turn off the phone and remove the tray for SIM-cards (use a paper clip or special key).
2. Heat the edge of the lid with a hair dryer for 1-2 minutes. The temperature should not exceed 60 ° C - otherwise the plastic will damage.
3. Put a plastic mediator in the gap between the lid and the body at the charging connector, carefully guide the tool around the perimeter, snapping the clamps.

If the lid doesn't lend itself, don't apply force -- most likely, the glue hasn't softened. Reheat. Don't use a knife or a screwdriver -- they'll leave scratches or break latches. Once you remove the lid, you'll see the battery, the motherboard and the camera. The screws holding the metal plate over the board are of different lengths -- remember their location or take a picture!

Step 2: Shutting off the battery

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

1. Carefully put the battery plume in the plastic transmitter and disconnect it from the connector on the board.
2. If the plume is boiling, drop a little isopropyl alcohol on the contacts and wait 10 seconds.

The battery connector in the Redmi 5A is fragile, so if you don't handle it carefully, you can tear off the contact areas. If you're planning to replace the battery, take it out: first, disconnect all the other plumes (display, cameras, buttons) so that you don't damage them when you manipulate the case.

⚠️ Warning: If the battery is turned off, the phone still turns on when you press the power button, there is a short circuit somewhere!

Step 3: Removing the motherboard

The Redmi 5A motherboard is mounted with 12 screws under a metal plate, and then unscrewed.

1. Carefully raise the charge with a plastic mediator, starting from the side of the charging connector.
2. Disconnect all the plumes: display, touchscreen, on/volume buttons and fingerprint sensor (if any).
3. Make sure that no cable is pulled - otherwise you can tear the connector.

The card contains the most vulnerable elements: a memory chip (under a metal screen), a Wi-Fi module (near antenna contacts), and a charging connector (often oxidized when moisture is ingested). If you disassemble your phone because of charging problems, check the connector for corrosion or bent contacts, and you can clean them with a cotton swab dipped in isopropyl alcohol.

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If the screws are boiling, put a little alcohol on them and wait 5 minutes. Don't try to twist them by force - the snails will complicate the assembly.

Step 4: Replace the battery

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

1. Put the battery on a plastic mediator on either side and pull it up. Don't use metal tools!
2. If the battery fails, heat the body with a hairdryer (maximum 60°C) and try again.
3. After removal, clean the case of glue residues with alcohol. The new battery should fit tightly to the case.

When you install a new battery, pay attention to the polarity -- the red wire has to go to the plus contact. If you bought an adhesive-based battery, remove the protective film only before you install it. The bloated battery can't be pierced or bent -- it can cause fire! If the battery is deformed, put it in a sealed container and dispose of it at a special reception point.

Step 5: Disassembly of the display module

Display and touchscreen in Redmi 5A They are a single module (OGS-To take it down:

1. Heat the screen edge with a hair dryer (temperature to 70°C). Start on the long side.
2. Suction cups slightly lift the module and insert a plastic mediator between the screen and the frame.
3. Carefully drive the mediator around the perimeter, separating the glue. Don't press too hard - the glass may crack!

Once you remove the module, you'll see the display and touchscreen plumes, and they're under the metal plate -- remember to disconnect them before you disassemble them completely. If you're replacing the screen because of cracks, check if the touch layer is damaged -- sometimes cracks in the glass don't affect the touchscreen, but 70 percent of the time, the entire module needs to be replaced.

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The Redmi 5A display module is not repaired – if the glass or matrix is damaged, a complete replacement is required. The cost of the new module is from 1500 to 2500 rubles, depending on the supplier.

Common Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when disassembling the Redmi 5A. Here are the most common:

• 🔋 The battery plume is damaged when you jerk it out. Always unplug it carefully, putting it on the side.
• 📱 Cracks on the display due to excessive heat or pressure. Use a hair dryer at minimum temperature.
• 🔧 Loss of screws at Redmi 5A They're tiny. Use a magnetic mat!
• 💧 If you put alcohol on a board, it can cause corrosion.

Another common problem is that you don't build the right thing, so if you forget to plug in the fingerprint sensor plume, the phone will work, but the scanner won't. Always check all the connectors before you finally build them. If the phone doesn't turn on after you disassemble, check:

• Is the battery connected?
• Is the power button damaged?
• Is there a short circuit on the board (look for the darkening or smell of burning).

FAQ: Frequent questions about the Xiaomi Redmi 5A disassembly