How to carefully remove the back cover Xiaomi Redmi 7A: a step-by-step guide with photos and tips

The back cover of Xiaomi Redmi 7A — This is not just a protective element of the body, but also a barrier that hides access to the battery, slot. SIM-Many users are faced with the need to remove it, whether it is to replace the battery, clean the dust, repair plumes or install additional modules. However, improper handling of the lid can lead to cracks in plastic, damage to latches or even failure of flexible plumes.

In this article, we will discuss how to open the Redmi 7A without specialized skills using tools at hand, what tools you will need, how to avoid typical errors and what to do if the lid is stuck to the case, and we will focus on safety, tell you how to avoid damaging the fragile elements inside the smartphone and when to contact the service center.

Important: If your Redmi 7A is warranty-free, self-examination can void it. Check the warranty status in the Mi Service app before you start work.

Preparation for disassembly: tools and conditions

Before you start removing the lid, make sure you have everything you need. Xiaomi Redmi 7A is a budget smartphone with a plastic body, but that doesn't mean it can be disassembled with your bare hands. Here's the minimum set of tools:

• 🔧 Plastic blade (or mediator) - for gently putting the lid on. Metal tools can leave scratches.
• 🔥 Hair dryer or thermo-air station - for softening the glue (if the cover is "rigged"). The temperature should not exceed 60-70°C.
• 🧲 Suction - will help evenly pull the cover up without deforming it.
• 📦 The screw container - at Redmi 7A There are no external screws, but if you plan to further disassemble, they may be needed.
• 🧴 Isopropyl alcohol (90%+) — Removing glue or dirt from contacts.

Also prepare the workplace:

• 🪑 Work at a table with good lighting. A desk lamp with cold light is perfect.
• 🧹 Remove small objects from the surface – a lost latch or screw can complicate the assembly.
• ⚡ Turn off the phone and remove it. SIM-- A memory card. Don't disassemble the device that's on!

If you don't have a plastic blade, you can replace it with a guitar mediator or even a plastic card (like a discount card), the main thing is that the edge is thin and smooth. Metal objects (knives, screwdrivers) are not recommended for use: they can scratch the body or damage the plumes inside.

The structure of the Redmi 7A: what hides the back cover

Before you remove the lid, it is useful to understand what is underneath. In the Xiaomi Redmi 7A (model M1903C3GG/M1903C3GH), the internal device is as follows:

The Redmi 7A covers are mounted on 8 plastic latches around the perimeter and additional glue around the battery, and the main danger is to break the latches or tear the camera/display plume with excessive force. If you plan only to clean the case of dust, just slightly lift the cover on one side without removing it completely.

Note the sealing rubber gasket around the lid, which protects the insides from dust and moisture (despite the lack of an official IP standard for the model), and make sure that the gasket is flat, otherwise the leakage will be broken.

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Before disassembling, take a photo of the back cover of the smartphone - this will help to correctly position the latches during the reverse assembly.

Step-by-step: how to remove the cover without damage

Now, let's get to the practice. Follow the instructions carefully, don't skip the steps. If the lid doesn't lend itself, don't force it too much, you better try again from the other angle.

Turn off the phone and remove it. SIM-map

Heat the edges of the cover with a hairdryer (no more than 1 minute)

Secure the suction cup at the top of the phone (near the camera)

Put the lid on a plastic spatula from the bottom corner

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Step 1. Warm up the glue (optional)

If the phone was in use for a long time or stored in hot climates, the glue under the lid could suffocate. To make it easier to remove, evenly warm the edges of the case with a hairdryer for 30 to 60 seconds, holding it at a distance of 10 to 15 cm. Do not direct hot air to the display or camera!

Step 2. Beginning of the lid separation

Put a suction cup on top of the lid (near the camera module) and pull up slightly. Insert a plastic blade into the resulting slit. Swipe it carefully along the edge, flipping the clamps one by one. Start at the bottom left corner, there's less risk of damaging the plumes.

Step 3: Complete removal of the lid

When all the latches around the perimeter are snapped, slowly lift the lid, starting at the bottom. If you feel resistance, check if there are any non-reacting latches left. Don't pull the lid sharply, because antenna contacts may be glued under it.

Step 4: Disconnect the plumes (if necessary)

If you need to remove the lid completely (for example, to replace the battery), gently disconnect the plumes:

• 📸 Camera plume (upper part).
• 🔋 Battery plume (black connector in the center).
• 📶 Antenna contacts (stick to the lid – do not tear them off!).

Use a plastic spatula or tweezers to fit the connectors.

Common Mistakes and How to Avoid Them

Even if you're careful, you run the risk of making a mistake that will cause you to break, and here are the most common problems and ways to prevent them:

⚠️ Warning: If the phone stops turning on after the lid is removed, check if the battery or display plume has broken off. Often the problem is solved by simply plugging the connector back in.

• 🔨 Broken latches -- they occur when you put too much pressure on the lid. Solution: warm up the body with a hairdryer and try again from the other corner.
• 🔥 Melting plastic - if the hair dryer is too hot Solution: use minimum temperature and keep the hair dryer at a distance.
• 📱 The damaged plume of the display is if you pull the lid on the top. Solution: start removing from the bottom edge.
• 🔋 Bloated battery -- if the lid is not removed because of the battery deformation -- Solution: don't take your phone apart! Contact the service -- a bloated battery is dangerous.

Another common mistake is the loss of small parts. The Redmi 7A doesn't have screws on the lid, but it can fall out.

• 🧲 Magnetic screen pads (if you disassemble the display module).
• 🔊 Rubber dampers dynamics.
• 📶 Metallic contacts NFC-antennae (if they are unstuck).

Use a magnetic mat or container with a lid to avoid losing anything.

What to do after removing the lid: cleaning and diagnosis

When the lid is successfully removed, you can start the main task - whether it's battery replacement, cleaning or repairing.

1. Inspection for damage: check if there are cracks on the board, traces of oxidation or bloated capacitors. Pay special attention to the area around the USB-C port - there is often dirt accumulating.
2. Dust cleansing: use a soft brush or compressed air balloon. Don't blow with your mouth! - moisture from the breath can damage electronics.
3. Train check: gently lift the black locks on the plume connectors (they click upwards) and make sure the contacts are not oxidized.
4. Battery test: If the battery is swelling or its capacity has dropped sharply, replace it. The Redmi 7A uses a BM47 battery (or similar).

If you removed the cover to replace the display or repair the camera, before reassembling check the operability of the components:

• 📷 Test the camera in Pro mode (open the Camera app) → More. → Pro).
• 🔊 Check the speaker and microphone (record voice message).
• 📶 Make sure the antennas are working (check the signal level of the network).

If something doesn’t work after assembly, take the phone apart again and check:

• All the plumes are connected.
• Aren't the wires lided?
• Are there any foreign objects (screws, pieces of plastic) left inside?

Reverse Assembly: How to properly close the cover

Building a Redmi 7A after it's been dismantled is as important as disassembling it.

1. Check the seal: the rubber gasket on the edge of the lid should lie flat, without cracks. If it breaks, replace it (you can cut out of thin rubber).
2. Connect the plumes: First, the battery plume (black connector) and then the camera plume (white connector at the top).

Make sure the locks on the connectors are snapped.

Line the lid.

Check the gaps.

⚠️ Warning: If after assembly the lid "plays" or moves away at corners, do not use superglue! B-7000 on the problem areas and press the lid for 10-15 minutes.

After assembly, turn on the phone and check:

• 🔋 Charging (connect the cable) USB-C).
• 📶 Network signal and Wi-Fi.
• 🔊 Sound in the speaker and microphone.
• 📷 Camera performance (take a test shot).

If everything works, congratulations – you have successfully coped with the task!

When it is better not to take risks: cases for contacting the service

Despite the Redmi 7A's simplicity of design, there are situations where self-repairing can make the problem worse.

• 💥 The phone fell into water or other liquid (even if it worked afterward), and corrosion on the board may not immediately appear.
• 🔥 Battery swells or deforms. Risk of fire!
• 📱 The display broke, and shards of glass got inside the case.
• 🔌 After a fall, the phone doesn't turn on or overheats.
• 🛠️ The chip must be replaced (for example, PMIC or EMMC). It requires soldering equipment.

The cost of repair in the service depends on the problem:

If you're in doubt, it's better to pay for repairs than risk the phone's performance. - Xiaomi's official service centers mi.com/ru/service) Use original spare parts and give a guarantee for work.

FAQ: Frequent questions about Redmi 7A disassembly