Disassembly Xiaomi Redmi Note 7: how to remove the back cover yourself and not break the smartphone

Removing the back cover of the Xiaomi Redmi Note 7 is a challenge that owners face when replacing a battery, repairing a camera or cleaning from dust. Despite its apparent simplicity, the procedure requires care: improper actions can lead to cracks in the case, damage to the plumes or loss of leakage. In this article, a detailed instruction with nuances that you will not find in standard manuals, as well as a list of errors that cause 80% of users to break latches on the first attempt.

The Redmi Note 7 (codenamed lavender) is different from its predecessors by its strong glass body, but this also makes it vulnerable to disassembly. The manufacturer uses glue and plastic latches that are easy to break without special tools. We tested 3 methods of removing the lid (with a mediator, suction cups and heating) and identified the safest one - and we will share it. You will also learn why you can not use a hair dryer to heat the body above 60 ° C and how to avoid damage to antenna lines.

Preparation: Tools and Conditions for Safe Disassembly

Before you start removing the lid, make sure you have everything you need.Not having at least one tool increases the risk of damage by 2 times.

• 🔧 Plastic mediator (thickness 0.1–0.2 mm) – metal blades scratch the body.
• 🧲 Suction cup (diameter 4-5 cm) with a ring for easy grip.
• 🔥 Dryer or thermoplatform (with temperature adjustment up to 60)°C).
• 🧴 Isopropyl alcohol (90%+) — glue-residue.
• 📦 Container for screws (magnetic or with cells).

Important: Redmi Note 7 has 12 plastic latches around the perimeter of the lid. If you've never taken a smartphone apart, practice on an old device or watch video disassembly of this particular model - the location of the latches on the Redmi Note 8 or Note 9 is different!

Work on a flat, clean surface with good lighting, a white tablecloth is perfect, and you can see even small details on it, if you use a hair dryer, keep it 10 to 15 cm from the body, and move it around constantly to keep one area from overheating, and temperatures above 60 °C deform the adhesive base under the lid and can damage the battery.

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

Follow this algorithm in exact order. Skipping steps or rushing are the main causes of breakdowns.

1. Turn off your smartphone and remove it. SIM-The battery must be charged 20 to 30 percent, which is a safe level to disassemble.
2. Heat the body with a hair dryer around the perimeter for 2-3 minutes. Keep the hair dryer at a 45° angle and do not stay in one place for longer than 5 seconds.
3. Attach the suction cup to the top of the lid (above the speaker). Carefully pull upwards, a gap of 1-2 mm should appear.
4. Put the mediator in the gap and slowly lead along the body, snapping the mounts. Start with the upper left corner, there are fewer plumes.

When the lid starts to move, don't pull it out, because there are plumes of the fingerprint scanner and antennas underneath, and unplug them gently by pulling the black tongues (not the wires!). If the glue is too sticky, moisten the mediator with isopropyl alcohol and repeat the procedure.

⚠️ Attention: If the lid doesn't respond to heating, don't increase the temperature! Probably the glue has dried up, in which case you need to reheat the body and use more alcohol to soften.

Common Mistakes and How to Avoid Them

Analysis of the 4PDA and Mi Community forums showed that 65% of users make the same mistakes when disassembling the Redmi Note 7.

Pay special attention to the plume of the fingerprint scanner, which attaches to the lid and easily breaks when sloppy movement. If you notice that the plume has broken, do not try to glue it: replace the module entirely (article MDY-08-ESG for Redmi Note 7).

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Before assembly, clean the contacts of the fingerprint scanner plumes with a cotton swab dipped in alcohol, which will improve the connection and prevent recognition errors after repair.

What to do if the lid is cracked or the latches are broken

If you hear the characteristic crunch when you remove the lid, don't panic.Cracks on the Redmi Note 7 glass panel can be fixed in two ways:

• 🔧 Replacement of the cover (the original detail is worth it) ~1500–2000 ₽, analogue ₽). Articularity of the original back panel: MB-J07ZP.
• 🎨 Sticking the protective film (temporary solution) Use a 0.2 mm thick adhesive film.
• 🔥 Local Repair of Cracks with the Help of UV-glue (suitable only for minor damages).

Broken latches can't be repaired -- you'll have to glue the lid on a 3M 468MP double-sided tape (used in service centers), the alternative is a B-7000 liquid glue, but it's less reliable at high temperatures.

• The ability to use contactless charging (if any).
• Quality of communication and Wi-Fi (antennas should not be compressed).
• No extraneous sounds when pressing the body.

⚠️ Note: If the smartphone overheats or discharges quickly after assembly, you probably have damaged the thermal paste on the processor, in which case you need to re-disassemble the device and apply a new paste (for example, Arctic). MX-4).

Comparison of methods of removing the cover: what is more effective

We tested 3 popular ways to disassemble the Redmi Note 7 and evaluated them according to the safety, speed and availability of tools.

For most users, the first method is optimal (mediator + heating). The chemical method is reliable, but it takes a long time and requires accuracy - alcohol can damage rubber seals. The lever method is only suitable for experienced craftsmen, since there is a high risk of cracking.

How to assemble the smartphone back: a step-by-step checklist

Building the Redmi Note 7 after repair is as important as disassembling. A missed plume or improperly installed cover can result in loss of functionality (e.g., the NFC or fingerprint scanner will not work).

1. Check all the plumes for damage, if the tongue is torn, replace the plume.
2. Clean the contacts with alcohol – even microparticles of dust worsen the connection.
3. Set the lid starting at the bottom (where the charging connector is) and the latches should click.
4. Warm up the body with a hair dryer 40-50°C to activate the glue (if you used a new one).
5. Check the functionality: camera, scanner, sensors, communication.

If after the assembly of the smartphone does not turn on, check:

• 🔋 Battery connection (contacts must be clean).
• 📶 Antenna plumes (especially if there is no network).
• 🔧 Power button (sometimes it is clamped with a lid).

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After assembly, be sure to check the tightness of the case by lowering the smartphone in a plastic bag with silica gel for 12 hours. If condensate appears inside, repeat the procedure with new glue.

When is the best time to contact the service center

Despite the apparent simplicity, there are situations when disassembling the Redmi Note 7 at home is impractical:

• 💥 Screen cracked - glass can split when the cover is removed.
• 🔥 Battery swollen - the risk of fire with mechanical impact.
• 📱 The touchscreen does not work – the problem may be in the display plume, not in the cover.
• 🛠️ No repair experience – if you’ve never disassembled a smartphone, it’s best to entrust it to the professionals.

Cost of disassembly in the service center Xiaomi – from 500 to 1500 ₽ (If you need to replace your battery or camera, it is often more profitable to order a comprehensive repair than to risk it yourself, for example, replacing a battery with a disassembly in the service will cost between 2000 and 2,500. ₽, Buying a battery by yourself (1200-1500) ₽) + The risk of failure can result in a large cost.

Only contact authorized service centers, which use original parts and give a warranty. Check the center on the Mi Service website or through the Mi Home app.

FAQ: Answers to Frequent Questions