How to gently open the cover Xiaomi Redmi 7A: instructions with photos and warnings

Disassembling the Xiaomi Redmi 7A is a challenge that owners face when replacing the battery, repairing the speaker or cleaning the connectors. However, improper removal of the back cover can lead to cracks in the case, damage to the plumes or even loss of leakage (if the device has previously been in contact with moisture). In this article, we will analyze three officially approved methods of disassembly, list the necessary tools and warn of typical errors that beginners make.

Redmi 7A

Xiaomi

patience and accuracy

Preparation for disassembly: tools and security measures

Before you start removing the lid, make sure you have everything you need, and if you don't have at least one tool, you can damage the body or the internal components, and here's the minimum set:

• 🔧 Plastic blade (or mediator) - to separate the cover without scratches.
• 🔥 Dryer or thermo-air station - for softening the glue (temperature not higher than 80)°C).
• 🧲 Suction - helps to lift the cover after heating.
• 📏 Thin screwdriver (cross or flat) - for unscrewing screws under the lid.
• 🧴 Isopropyl alcohol - to remove glue residues.

Also prepare a clean workspace with good lighting. Work on a soft surface (like a napkin or rubber mat) to avoid slipping your smartphone. Never use metal tools to separate the lid - they leave microcracks that will eventually lead to loosening of the case.

⚠️ Attention: If your Redmi is 7A If you've been in water or been exposed to extreme humidity, disassembly can break the tightness, in which case it's better to contact the service - self-intervention will void the warranty (if it's still valid).

Method 1: Warming and removing the cover with a hair dryer

This is the most common way that service centers use, and the glue that holds the lid is elastic when heated, so you can separate it without damage.

1. Turn off your smartphone and remove it. SIM-card and memory card (if installed).
2. Heat the back cover around the perimeter with a hair dryer for 2-3 minutes, keeping it at a distance of 5-7 cm.
3. Place the suction cup closer to the bottom edge of the smartphone (where the USB-C connector is located) and pull up slightly.
4. In the resulting gap insert a plastic spatula and carefully conduct it around the perimeter, separating the lid.

If the lid fails the first time, repeat the heat again. Don't use excessive force, it can lead to cracks near the power and volume buttons. Also make sure that the blade does not slip in and damage the battery plume or antenna contacts.

Method 2: Use of strings or fishing lines (for experienced)

This is a good method if you don't have a hair dryer or a lid that's particularly glued (for example, after a previous repair), instead of a shoulder blade, you use a thin string or line that cuts through the adhesive around the perimeter, and the advantage is that you have less risk of damage to the body, the disadvantage is that you need to be skilled.

Algorithm of action:

1. Secure one end of the fishing line on the suction cup (or fix it with tape on the back of the lid).
2. Stretching the line and start "sawing" it around the perimeter, starting from the lower edge.
3. As you move, the lid will gradually separate, and once the line has passed the entire circle, remove the lid.

⚠️ Warning: Do not use a metal string - it can scratch the body. The best option is a nylon line with a thickness of 0.3-0.5 mm or a special string for disassembling smartphones.

This method takes longer, but is considered safer for beginners because it eliminates the risk of the blade slipping inside the case, but if you've never worked with a fishing line, practice on an old device or watch a training video.

Method 3: Unheating (risky)

If you don't have a hair dryer or fishing line, you can try to open the lid "cold", but this is fraught with damage, this method is only suitable for emergencies (for example, if the smartphone does not turn on and you need to urgently reach the battery).

Instructions:

1. Insert a plastic blade into the gap between the lid and the case at the USB-C connector.
2. Carefully press and try to swivel the shoulder blade to create an initial slit.
3. Continue to separate the lid around the perimeter, if necessary using several blades at the same time.

This method often leads to chipping of plastic or tearing of latches, so use it only as a last resort. If the lid does not lend itself, do not persist - you better find a hair dryer or contact the service.

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If you are afraid of damaging the case, try first heating the smartphone in warm water (not higher than 40 ° C) for 5 minutes. This will weaken the adhesive, but will not damage the electronics if the device is turned off and leakproof.

What to do after removing the cover: further actions

When the lid is finally separated, the Redmi 7A’s interior design will open up in front of you.

• 🔋 Battery - fixed on adhesive tape, disconnected after removing the plume.
• 📶 Antenna contacts – thin metal strips around the perimeter.
• 🔊 The speaker and microphone are located at the bottom.
• 📱 Display plume - passes under the battery.

Before you continue disassembling, take a picture of the location of all the plumes and screws, which will help to properly assemble the smartphone back.

If your goal is to replace the battery, first disconnect the plume and then slap the battery with a plastic blade. Never use metal tools - they can puncture the battery and cause a fire.

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After disassembly, be sure to check the tightness of the case. If the lid does not fit tightly, use a new glue or double-sided tape for fixation.

Common Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when disassembling the Redmi 7A. Here are the most common of them and ways to prevent them:

• 🔥 Overheating of the body - if you hold the hair dryer too close, the plastic can deform. Solution: Keep the hair dryer at a distance of 5-7 cm and constantly move it.
• 💥 Sharplying the lid can break the plumes. Solution: Move the shoulder blade slowly, making sure it's not clinging to the internal parts.
• 🔌 Forgetting to disconnect the battery can cause a short circuit. Solution: first thing you do after you remove the lid, turn off the battery.
• 📉 Loss of screws at Redmi 7A Solution: fold them into separate containers with signatures.

Another common problem is that the battery's adhesive tape is damaged, and if it breaks, the new battery may not hold well, causing it to shift and possibly disconnect, in which case use 3M double-sided tape or special battery glue.

Smartphone Assembly: How to Avoid Mistakes

Putting the Redmi 7A back together is often harder than disassembling, and here are the key points to look out for:

1. Make sure all the plumes are connected correctly. Pay special attention to the plume of the display, which is the most fragile.
2. Make sure the power and volume buttons are in their grooves. If they're hanging, take the smartphone apart again and correct them.
3. Stick the lid back with new glue or double-sided tape. Don't use superglue - it can damage the plastic.
4. Before the final assembly, turn on the smartphone (without closing the lid) and check that everything works: camera, speaker, microphone, sensors.

If the smartphone doesn't turn on after assembly, don't panic.

• Disconnected battery plume or display.
• Short circuit due to metal particles.
• A damaged power button (check if it works when pressed).

In this case, disassemble the device again and carefully examine all connections. If the problem is not solved, you may need to diagnose the board.

FAQ: Frequent questions about Redmi 7A disassembly