How to Remove Xiaomi Redmi 4 Back Cover Carefully: Tools, Steps and Risks

The back cover of the Xiaomi Redmi 4 is not just a security element, but a barrier that hides access to the battery, the slot for the SIM- cards and other internal components. Many users face the need to remove it, whether it is a battery replacement, dust cleaning or repair after a fall. However, the wrong approach can lead to cracks on the plastic, damage to the plumes, or even failure of the fingerprint sensor (if it is installed under the lid).

In this article, we will look at three officially approved methods of removing the lid (including the option without special tools), list the necessary devices and warn about common errors. Particular attention will be paid to the Redmi 4 Pro model, where the mount is different from the basic version. If you have never taken out smartphones, don’t worry: our step-by-step instructions with photos and videos will help even a beginner to cope with it.

Preparation: What to Know Before Disassembly

Before you start the screwdriver, answer three key questions:

• 🔋 Why would you take off the lid? If the goal is to replace the battery, check if it's easier to bring the phone to the service (the cost of the work is often comparable to the cost of a new battery).
• 🛠️ Do you have any experience with small electronics? Redmi 4 is not the most difficult machine to disassemble, but requires care - especially when disconnecting plumes.
• ⚖️ Will the warranty be maintained? If the phone is warranty, the self-repair will cancel it, and you'd better go to an authorized Xiaomi service center.

If you're determined to do it yourself, prepare the workplace.

• 💡 Good lighting (better to use a desk lamp or flashlight).
• 🧹 Clean surface without debris or dust (plug a soft cloth or napkin).
• 📱 Phone disconnected (remove SIM- cards and memory card if installed).

⚠️ Warning: Don't disassemble Redmi 4 at humidity above 60% - condensation on the board can cause a short circuit. If the phone has recently been in the cold (for example, brought from the street in winter), let it heat up to room temperature (at least 30 minutes).

Tools you need: what to buy and where to save

To disassemble the Xiaomi Redmi 4, you will need a minimum set of tools, most of which can be found in repair kits for smartphones (cost from 300 rubles) or purchased separately:

If you do not want to spend on a full set, you can do with improvised means:

• 📌 Instead of a plastic shoulder blade, use a guitar mediator or an old bank card (shoot corners to avoid scratching the body).
• 🔩 Instead of a specialized screwdriver, a spectacle screwdriver will fit (usually complete with glasses).
• 🧴 Instead of isopropyl alcohol, a liquid can be used to remove varnish without acetone (but it is less effective).

⚠️ Warning: Never use metal blades (knives, stationery knives) to slap the lid!Even a little pressure can leave irremovable scratches on antenna lines (thin stripes on the back panel), which will impair communication quality.

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Before buying tools, check if you have an old toothbrush at home - its bristles are great for cleaning dust from connectors and speakers after disassembly.

Step-by-step: how to remove the cover Xiaomi Redmi 4

The Redmi 4 disassembly process takes 10-15 minutes with proper preparation, and follow the instructions in strict order to avoid damage.

Turn off the phone and remove it. SIM-map|Put the phone on a soft surface with the screen down|Heat the edges of the cover with a hair dryer (no higher than 60).°C)|Prepare the tools within reach-->

Step 1: Heating the glue layer

The Redmi 4 cover is attached to a double-sided tape that becomes elastic when heated. Take a hair dryer (or put your phone on a warm battery for 5 minutes) and warm the edges of the case evenly around the perimeter. The optimal temperature is 50-60 °C (not higher so as not to damage the battery!). Keep the hair dryer at a distance of 10-15 cm and constantly move it.

Step 2: Filting the lid

Put a plastic blade or mediator in the gap between the lid and the body at the charging connector. Carefully drive the tool along the edge, gradually detaching the glue. If the lid does not respond, warm up the problem area again. Don't force it - it can break the latches!

The Redmi 4 Pro has one thing that's special about it: there's an extra latch next to the power button, and you have to snap it separately, and you just press the lid a little bit.

Step 3: Disconnecting the plumes

After removing the cover, you will see:

• 🔋 Battery (stick to the body).
• 📶 Antenna contacts (thin metal strips).
• 🔌 Fingerprint sensor plume (if the model is fingerprinted).

Before you go ahead, disconnect the battery: put a plastic blade on the black connector on the motherboard, which will prevent short circuits from happening further.

Step 4: Removing the lid

When all the latches are snapped, slowly lift the lid, starting at the bottom edge (on the charging connector side). Be careful: it may be glued to antenna wires. If you feel resistance, check if you have forgotten to disconnect the fingerprint sensor plume (if any).

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The rule of disassembly is no force! If something doesn't go away, you miss the latch or you don't warm up the glue. Better spend an extra 5 minutes checking than breaking the case.

Common Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when disassembling the Xiaomi Redmi 4, and here are the most common ones and ways to prevent them:

• 🔥 Dryer overheating — if the temperature is above 70 °C, the battery may swell or the contacts on the board may move away. Use a thermometer or hold your hand near the case: if it's hot, so will the phone.
• 🔩 Loss of screws — Redmi 4 uses 5 screws of varying lengths. Take a picture of their location before unscrewing or fold them into separate containers.
• 📱 Screen plume damage - never pull the top edge cover (where the front camera is located) and there's a display plume that's easy to tear.
• 🧲 Magnetic interference -- don't put a screwdriver next to speakers or a microphone. Strong magnets can magnetize parts and make sound worse.

Another common problem is that the antenna contacts are removed, and they're glued to the lid and connected to the board with thin wires.

1. Carefully lift him with tweezers.
2. Apply a drop of superglue (like Loctite 401) to the base.
3. Press the contact for 30 seconds and let the glue dry for 10 minutes.

⚠️ Warning: If after assembly the phone stopped catching the network or Wi-Fi, most likely you damaged the antenna wire. Check its integrity and replace it if necessary (the cost of a new wire is about 200 rubles).

What to do after removing the cover: further actions

When the lid is successfully removed, you will have access to the internal components of Redmi 4. Depending on the purpose of disassembly, follow one of the following paths:

If your goal is to replace the battery, consider a few nuances:

• 🔋 Buy a 4100 mAh battery (original for the Redmi 4). Cheap 5,000 mAh batteries are often inflated.
• 🔌 The new battery comes without glue — use double-sided tape 3M 467 or heat-glue.
• ⚡ Calibrate the battery after replacement: completely discharge the phone, then charge to 100% without interruption.

To clean the insides of the phone, use:

• 🖌️ Soft brush (e.g. for drawing) – to remove dust from boards.
• 🧴 Cotton swabs moistened with alcohol for cleaning contacts.
• 💨 Compressed air balloon to blow dust out of speakers and microphone.

Phone Builder: How to Put the Cover Back

Putting the lid in place is as responsible a process as removing it.

1. Check all plumes: make sure the battery connector, fingerprint sensor and antenna wires are connected correctly.
2. Clean the edges of the case with old glue with isopropyl alcohol.
3. Apply a new glue: bilateral tape will suit for temporary fastening. For long-term - thermal glue (applied with a gun along the perimeter of the lid).

Line the lid.

Check the functionality

• Turn on your phone and make sure the screen responds to touch.
• Check the fingerprint sensor (if any).
• Make sure the phone catches the network and Wi-Fi.

If after assembly the lid "walks" or moves away at the edges, the reasons may be as follows:

• 🔹 Not enough glue - add heat glue to problem areas.
• 🔹 The latch is damaged, in which case the lid will have to be glued tightly (but this will make the next repair more difficult).
• 🔹 The body is deformed -- if the phone falls, it might bend the metal frame, and then just replace the body.

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After assembly, allow the glue to dry for at least 1 hour before turning on the phone, which will prevent the cover from moving when the battery is heated.

Alternative methods: when there are no tools

If you don't have specialized tools, you can try removing the Redmi 4 cover with improvised tools, but these methods are less safe and require extreme caution.

Method 1: Using a credit card

Take an old plastic card (like a discount card) and cut its corners so they become rounded. Warm up the edges of the phone with a hairdryer, then gently insert the card into the slot at the charging connector. Slowly guide the map along the case, snapping the latches. The main thing is not to rush and press too hard.

Method 2: With the help of a thread

This is a good way to do it if the glue hasn't dryed out yet (like after a recent battery change), take a strong thread (like a dental one) and run it between the lid and the body, then pull the thread in different directions, like a saw glue, a long method (it takes 15-20 minutes), but minimizes the risk of damage.

⚠️ Warning: Do not use knives, scissors or other metal objects under any circumstances! Even a slight scratch on antenna lines can cause loss of network signal or deterioration of quality GPS.

Method 3: Warming up in warm water (extreme case!)

If the lid is very tight and other methods don't work, you can put the phone in warm water (not above 40°C!) for 1-2 minutes. This will soften the glue, and the lid will be removed easier.

• ❌ The method is risky -- if water gets in, the phone could fail.
• ❌ Not suitable for models with leaky body (e.g. after previous repairs).
• ❌ After the procedure, the phone should be dried in rice or silica gel for at least 24 hours.

We recommend using this method only in a hopeless situation and if the phone is no longer warranty.

FAQ: Answers to Frequent Questions