How to open the lid of the Xiaomi Redmi 5A phone: safe disassembly with your own hands

The Xiaomi Redmi 5A is a challenge that owners face when changing their battery, repairing their speaker, or cleaning their connectors. This model, released in 2017, is still popular because of its reliability and affordability. But its non-shatterable adhesive body requires caution: one wrong move, and you risk damaging plumes or leaving scratches on plastic.

In this article, you'll find step-by-step instructions with photos and videos, a list of tools you need, and hidden nuances that aren't covered in standard manuals. We'll tell you how to minimize risks, what to do if the lid doesn't work, and how to avoid the mistakes of beginners. If you've never taken your smartphone apart, don't worry: with the right approach, even the first experience will pass without consequences.

⚠️ Warning: Redmi's parsing 5A The adhesive lid is designed for one-time use, and once dismantled, the sealability of the housing will be broken, which can lead to dust or moisture.

Preparation: tools and modalities

Before you start, make sure you have everything you need. Xiaomi Redmi 5A does not require professional equipment, but saving on tools often turns into chipped plastic or torn plumes.

• 🔧 Plastic blade (or mediator) - to separate the lid and the body. Metal tools leave scratches!
• 🔥 A hair dryer (or a thermo-air station) is for softening the glue, even a household one, but with temperature adjustment, is fine.
• 🧲 Suction cups help lift the lid after heating. Alternative: Scotch with loop.
• 🔍 Loop or magnifying glass - so as not to miss the hidden latches.
• 📦 The screw container - at Redmi 5A They are few, but easy to lose.

Also prepare the workplace:

• 🪑 Work at a table with good lighting – better daylight.
• 🧹 Remove carpets and fabrics – static electricity can damage the board.
• 📱 Put a second phone next to you with this instruction or video guide.

⚠️ Warning: If you're disassembling a battery replacement phone, fully discharge it before starting Redmi's Lithium-ion batteries 5A (model BM43) When the swelling or deformation can be ignited.

Step 1: Shutting off power and removing the tray SIM-map

The first step is to turn off the device and remove all removable parts, which will prevent short circuits and make it easier to access the internal components.

1. Turn off the phone with a long press on the power button (5-7 seconds). Make sure the screen is out and there is no vibration.
2. Remove the tray for SIM-cards with a paper clip or a special key. 5A It is located on the right end (when you look at the screen).
3. Check if there is a micro-SD card left in the tray - it may interfere with the disassembly.

At this point, many people make the mistake of trying to immediately lid the lid without removing the tray, which leads to deformation of the metal frame around the slot, and if the tray is jammed, do not use force - spray it around the WD-40 or alcohol and wait 2-3 minutes.

Step 2: Heating the body to soften the glue

The Redmi 5A cover is attached to the 3M double-sided tape, which holds it tight at room temperature, and to separate the cover without damage, the glue needs to be softened.

1. Set the dryer at 60-70°C (not higher!) and direct the hot air to the edges of the body, not the center, so the glue warms up evenly.
2. Keep a hair dryer 5-7 cm away from your phone, moving it around the perimeter all the time. Heating one dot for longer than 10 seconds can melt the plastic.
3. After 2-3 minutes, check if the lid is not lidable. If not, warm up for another 1 minute.

🔹 Signs of sufficient heating:

• The body was warm to the touch (but not hot!).
• When you press the lid, you can hear a slight creak of glue.
• Suction cup or scotch began to "stick" to the surface.

⚠️ Note: Do not use a building dryer (temperature above 100)°C) or open fire! Redmi plastic 5A It starts to deform at 80.°C, and the display module can detach from the glass substrate.

Step 3: Separation of the cover from the body

When the glue has softened, proceed to the tidy separation of the lid. The main thing here is to take your time and follow a strict sequence:

1. Attach the suction cup to the bottom of the lid (near the micro-USB connector). If there is no suction cup, use a wide tape tape folded with a loop.
2. Pull the lid up with a light motion. If it doesn't, don't pull, warm it up for another 30 seconds.
3. Once you have a gap of 1-2 mm, insert a plastic blade into it, move it along the edge, gradually increasing the gap.
4. Pay special attention to the corners, where the latches are, and you need to snap them with a blade, not break them.

🔹 Typical problems and solutions:

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If the lid starts to move, but it runs into the middle, don't try to pull it out. In Redmi 5A, the fingerprint scanner plume runs under the lid (if you have one in your modification), and if it breaks, it will cause the sensor to fail.

Step 4: Disconnect the plumes and completely remove the cover

When the lid is 70 to 80 percent apart, don't take it off completely, because there are plumes underneath that are attached to the motherboard.

• 🔋 Battery plume (red/black, with connector) JST 1.0).
• 👆 Fingerprint scanner plume (if installed in your version).
• 🔊 The plume of the lower microphone (thin, white).

To avoid damaging them:

1. Keep the lid on and hold it in that position (you can put the book).
2. Turn off the battery plume with a plastic blade, pulling the connector up.
3. If you have a fingerprint scanner, disconnect its plume (it is attached with a clip).
4. Only then remove the lid completely and put it aside.

⚠️ Note: Some versions of Redmi 5A (So if you see a solder instead of a connector, don't tear it off, and then you can only remove the cover at 90.°, non-disconnect.

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The rule of thumb when working with plumes is that if the connector is not amenable to a plastic blade, you missed the latch. Don't use force, look for the hidden lock!

What to do if something goes wrong

Even if you take a good look at it, you can have force majeure, and here are the most common ones and the ways to eliminate them:

• 🔋 Battery plume burst Symptoms: phone not turning on, no charging reaction Solution: Replace the plume (Xiaomi article) BM43 connector) or solder the wires directly to the board (sweeter station required).
• 🔊 After assembly, the microphone fails. Symptoms: the interlocutor does not hear you during the call. Solution: Check if the microphone plume is compressed under the lid. If damaged, you need a replacement. 5A).
• 📱 The screen became "glutty" after assembly Symptoms: spontaneous pressing, non-functioning areas. Solution: Remove the cover and check if it is pressing on the display module.

If you have damaged the plastic latches on the lid, they can be restored with a Loctite 406 glue (cyanoacrylate) or replace the entire lid (the original costs ~500-700 rubles).

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Before final assembly, wipe the insides of the case with alcohol wipes, which will remove the glue residue and dust that may have gotten inside during the disassembly.

Assembly of the phone and checking of performance

It’s easier to put Redmi 5A back together than to disassemble, but there are nuances here too:

1. Make sure all the plumes are plugged in before you click. Check the battery connector, it should sit tight, without backlash.
2. Apply a new double-sided tape on the lid (a 10 mm wide 3M 9448A is fine), and you can't use the old glue because it's lost its stickiness.
3. Line the cover on the micro-USB connector and gently press it, starting from the center.
4. Warm up the edges with a hair dryer (50°C temperature) for 1 minute - this will improve glue adhesion.

After assembly:

• 🔋 Connect the charger and check if the current is coming (the indicator should catch fire).
• 📞 Call from another phone to test the microphone and speaker.
• 👆 If you have a fingerprint scanner, add a new print and check it.

⚠️ Warning: If the phone doesn't turn on after assembly, don't panic. Connect it to charge for 10-15 minutes - it's possible the battery is completely drained during disassembly. If the indicator doesn't light up, check the battery plume with a multimeter (voltage should be 3.7–4.2V).

FAQ: Frequent questions about Xiaomi Redmi 5A