Disassembly Xiaomi Mi 6: how to open the case correctly and not break the smartphone

Preparation for disassembly: what you need to know before the beginning

Disassembling the Xiaomi Mi 6 is a task that requires precision and understanding of smartphone design. This model, released in 2017, has an all-metal body with adhesive back panel fixation, which complicates the opening process. Before you start, evaluate your skills: if you have never disassembled smartphones, you better contact a service center. Disassembly errors can lead to damage to the plumes, rupture of flexible cables or even failure of the motherboard.

The main problem in the disassembly of the Mi 6 — risk FPC-The fingerprint scanner plume that runs under the battery is extremely fragile, and it's going to cost you to replace it. 30-50% Also, if the purpose of disassembly is to replace the battery or repair the display, weigh the costs: sometimes it is cheaper to buy a used smartphone in good condition than to restore the old one.

Necessary tools: without which to do

The Xiaomi Mi 6 will require a specialized set of tools to disassemble, and the use of improvised tools (knives, screwdrivers of the wrong size) is almost guaranteed to result in scratches on the body or damage to internal components.

• 🔧 Plastic blades (2-3 Metal mediators are not suitable: they will scratch the anodized aluminum.
• 🔥 A hair dryer or a thermo-air station to soften the glue. Optimal temperature: 70-80°C. Overheating over 100°C can damage the battery.
• ⚡ Suction cup - helps to lift the cover after heating. diameter at least 5 cm.
• 🔩 Screwdriver. T3 and T5 — Use magnetic attachments to keep the fasteners intact.
• 🧲 Tweezers with curved ends - for working with small plumes and connectors.
• 🔋 Tap tape or capron tape - to fix disconnected plumes and avoid their accidental break.

Additionally, it is recommended to use an antistatic bracelet or periodically touch a grounded metal object. Static electricity can damage the chips on the motherboard. If you disassemble a smartphone to replace the battery, buy the original battery with a capacity of 3350 mAh (article: MBJ435530). Cheap counterparts often have a lower real capacity and can swell in 3-6 months.

Step-by-step: how to open the back cover

Start by turning off your smartphone completely. If the battery is inflated, don't turn on the device, the risk of short circuit is high.

1. Heat the case. Turn on the dryer at medium power and evenly warm the back cover for 2-3 minutes, paying special attention to the edges. The glue softens at ~70 ° C. Do not direct air flow to the camera or display - this can damage the optics or polarizing layer of the screen.
2. Separate the lid. Apply the suction cup closer to the bottom edge (where the USB-C connector is located) and pull up. Once the slit appears, insert a plastic blade into it. Don't try to tear the lid off right away, the glue holds it all around the perimeter.
3. Perimeter pass. Carefully drive the blade along the edge, gradually separating the cover. In the corners, the glue resistance is stronger, you can slightly increase the heat here. If the lid does not respond, do not apply excessive force: there may be latches inside that will break.

When you take the lid off, you'll see the battery locked by a metal plate. Don't try to unscrew it right away, because there's a fingerprint scanner plume underneath the plate that's easy to tear. First, turn off the battery by pulling the black connector (which is on the right of the battery). Use the plastic blade to plug the connector.

Common Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when disassembling the Mi 6, and here are the most critical ones:

• 🔋 Trying to disconnect the battery without power out, if you touch the contacts of the battery with a metal tool, you will short circuit, consequences: a burnt motherboard or a fire.
• 📸 It's a camera plume damage, and it's attached to the motherboard with two screws, and if you lose it or pull it over, the camera will give away artifacts or it will stop working.
• 👆 The fingerprint scanner plume is broken, and it's a defect that's irreparable, because the scanner is integrated into the on button, and it's going to cost you to replace it. 4000-6000 ruble.
• 🔩 Loss of screws. The Mi 6 uses three types of screws: T3 (3 mm), T5 (length of 5 mm) and T5 (If you confuse them in places, you risk damaging the board when you build them.

To minimize the risks, take pictures of each stage of the dismantling, especially the location of the plumes and screws. Use a magnetic mat or container with cells to sort the fastener. If you notice that the screw is not screwed "like oil," do not apply force - check if it was dust or the wrong screw.

Replacement of components: what can be changed independently

The Xiaomi Mi 6 has the following components available for replacement (skills included):

When replacing the display, note that the Mi 6 is used OLED-Integrated touchscreen matrix. Cheap analogues can have color rendering or multi-touch problems. After installing the new screen, you may need to calibrate colors through the engineering menu (code: ##6484:

• Is the battery connector properly connected (sometimes it is not fully inserted).
• Is the power plume on the motherboard damaged?
• Are the contacts closed (check with a multimeter).

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If the smartphone overheats or discharges quickly after assembly, check if you have forgotten to connect the antenna plumes (they go from the motherboard to the metal body), their absence degrades the network signal and increases the load on the processor.

Smartphone Assembly: How to Avoid Mistakes

The Xiaomi Mi 6 build is often harder to disassemble.

1. Check the plumes. Make sure that all flexible cables (display, cameras, fingerprint scanner) are properly stacked and not twisted. The scanner plume should lie strictly in the center - if it shifts, the switch on will go down.
2. Rotary twisting. Start with diagonal screws to keep the board evenly pressed. The tightening force is moderate (T3 screws twist at ~0.3 Nm). A twisted screw can damage the tracks on the board.
3. Use the new 3M 9448A double-sided tape (0.25 mm thick) and apply it with continuous tape around the perimeter, avoiding the antenna area (they are marked on the inside of the cover).
4. Testing. Before final assembly, plug the battery in and check: 📱 Does the touchscreen work (take the test in Settings) → The phone. → Test of equipment). 📸 Do both cameras function (main and front). 🔊 Is there sound in the speaker and microphone. 🔋 Whether the device is charging (check wireless charging if it is supported).

If you have any extraneous shaking noises after assembly, it means that you have left behind extra screws or broken-off pieces of plastic latches, and you take your smartphone apart and remove the debris, which can damage your display or board over time.

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The most common mistake when building is forgetting to plug in the vibrator plume, so the smartphone doesn't vibrate when making calls, and users mistakenly think the firmware is the problem.

When the Disassembly is Inappropriate: Alternative Solutions

Sometimes, the Xiaomi Mi 6 is not economically or technically justified.

• 💸 The cost of repairs exceeds 50% For example, replacing the motherboard will cost you a lot. 8000-12000 rupees, while the used Mi 6 You can buy in good condition for 6000-9000 ruble.
• 🔧 If the smartphone is glitching, overheating or not turning on, try first: Reset to factory settings (Settings) → Additionally. → Restore and reset. Fastboot (instructions are available on the forum) 4PDA). Check for viruses (use Malwarebytes or Dr.Web Light).
• 🔋 The battery will be over 2 mm inflated, in which case the risk of damage to other components during disassembly is too high, it is better to contact the service with equipment for safe disposal.

If you still decide to disassemble a smartphone, but faced difficulties, use the video instructions on YouTube (look for videos with disassembly of the Mi 6, not other Xiaomi models).

⚠️ Note: If after disassembly the smartphone stopped turning on, do not try to "reanimate" it by connecting to charging on the device. 10+ This may cause a short circuit. Instead, check the voltage on the battery contacts with a multimeter (should be ~3.7-4.2V). If there is no voltage, the problem is the food charge.

FAQ: Answers to Frequent Questions