The desire to disassemble a smartwatch on your own often comes from a screen breakage, reduced autonomy, or the desire to test the tightness of the case. Xiaomi devices are famous for their compactness and complex assembly, where every millimeter of internal space is used with maximum efficiency. However, self-intervention requires not only accuracy, but also an understanding of the architecture of wearable electronics.
In this article, we will take a closer look at the process of dismantling various models, from simple fitness bracelets to full-fledged Smart Watches. You will learn what tools are needed to work, how to unplug the display without damage and what to do if the battery is swollen.
Before you start to take action, you need to evaluate the feasibility of repairs. Sometimes the cost of original parts and the risk of permanently disabling the gadget exceeds the cost of a new device. However, for enthusiasts and those who want to extend the life of a favorite gadget, this instruction will be an indispensable tool in modernization or repair.
Tools and workplace preparation required
You can't do a good job without a specialized set of tools, and trying to open the body with a knife or rough objects is almost guaranteed to damage the plumes or chip the frame, and you'll need a minimal set that you can find in any radio parts store or order online.
Special attention should be paid to the organization of lighting and cleanliness of the surface. Small screws and fragile connectors are easy to lose or damage if you work in dim light or on villous fabric. Use an antistatic mat or just a clean sheet of paper to make all the details visible.
To work with modern Xiaomi models, it is critical to have a hair dryer or heat pad on hand. The glue that fixes the display softens when heated, allowing the module to be separated without mechanical damage. A cold overburden often ends in cracks in the glass.
- 🔧 Precision screwdriver kit (cross-hatch) P2, P5 flat)
- 🌡️ Hair dryer or building hair dryer (low temperature mode)
- 🎴 Plastic mediators and screen suction cup
- 🔬 Loop or magnifying glass for inspection of small details
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Use a magnetic screw mat and sign the dismantling steps on paper – this will help not to confuse anything when reassembling.
Specifics of disassembly of fitness bracelets Mi Band
The Mi Band series is structurally different from a full-fledged watch, where the main module (capsule) is often removed from the silicone strap, which makes it easier to access, but makes it difficult to work with the body itself because of its miniature nature. In most cases, the back cover is missing, and access to the insides is opened through the display module.
The process starts with heating the front, you need to warm the perimeter of the screen evenly to a temperature of 60-70 degrees, then a thin metal or plastic blade makes the first subset, you need to act slowly, gradually passing in a circle and cutting the adhesive layer.
Inside, you'll find a compact board, a battery and a vibrator, and the main danger is to damage the plume connecting the screen to the main board, or to pierce a lithium polymer battery, and there's no room for error in the bracelets, because the components are so tightly packed.
The secret of extracting the capsule Mi Band 4/5/6
Dismantling of the Xiaomi Watch and Amazfit
Full-fledged models, such as the Xiaomi Watch or the Amazfit brand, have a more complex design. Often access to screws is hidden under the touchpad or decorative ring. In some models, such as the Amazfit GTR, the rear cover can be removable, but most often you need to remove the screen.
When you remove the display, it's important not only to unplug it, but also to properly unplug the plume. The connectors in the watch are very fragile. After you take the screen off, you get access to the main battery and the control board, and you often find additional protection in the form of metal screens or heat pads.
The waterproof system deserves special attention. The factory sealing is broken when disassembling. Even if you carefully seal the case back, the IP68 or 5 ATM level of protection is no longer guaranteed. It is highly recommended not to swim in such a watch after repair.
| Model of the device | Type of screen mount | Difficulty disassembling | Risk of damage |
|---|---|---|---|
| Mi Band 6/7/8 | Strong perimeter glue | Tall. | High (risk of cracking) |
| Xiaomi Watch Lite | Screws + Glue | Medium | Medium. |
| Amazfit GTS/GTR | Hidden screws + glue | Tall. | Tall (trains) |
| Mi Watch Revolve | Screws under the back cover | Low. | Low. |
☑️ Checklist before the start of the disassembly
Replacement of the battery and work with adhesive joints
The most common reason for disassembly is to replace the battery. Over time, the capacity of lithium cells drops and the clock stops holding the charge. The new battery must have the same dimensions and connector, otherwise the installation will be impossible or dangerous.
The old battery is often glued to double-sided tape, and to extract it, use a plastic card or a special tool with a thin blade. Metal tools can not be used - a short circuit can cause the residual charge to ignite.
When installing a new element, be sure to degrease the seat with alcohol. Use a special glue B-7000 or E-8000 for fixation, or a quality two-way electronics tape. Do not use superglue (cyanacrylate), as its vapors can settle on the optics of sensors or screen.
⚠️ Warning: Never puncture or bend the battery at a sharp angle. Damage to the lithium-polymer battery's inner lining can lead to instant ignition or chemical burn.
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Use only original batteries or proven counterparts with a protection controller – cheap nameless batteries may not be determined by the system or swell in a month.
Assembly of the device and restoration of leakage
Reverse assembly requires even more concentration than disassembly. You need to make sure that all the plumes are snapped to a characteristic click, and the screws are twisted evenly, without distortion. Excessive force when twisting can break the thread in the plastic bushings of the case.
Restore waterproofing is a complex process, and in addition to applying a new layer of glue around the perimeter, professionals use vacuum chambers to check the leakiness, and at home, you can only hope that the adhesive composition is applied accurately.
Once assembled, the device must be left under a press (for example, putting a heavy book on top through a soft fabric) for several hours, which will ensure the polymerization of the adhesive and tight fit all parts of the body to each other.
- 🧹 Carefully remove the remnants of old glue from the frame and screen
- 💧 Apply a thin, uniform strip of new glue B-7000
- ⏳ Let the glue dry. 2-3 minutes before joining the parts
- ⚖️ Leave the device under a light press on 4-6 hours
Typical errors and precautions
Beginners often make fatal mistakes that turn a simple repair into a complete replacement for the device, and one of the most common is using excessive force where you just need to warm up the glue better or find a hidden screw.
Another problem is the loss of sensor calibration: Some Xiaomi and Amazfit models require software calibration of the sensor or gyroscope after replacing the screen or battery, which cannot be done without special equipment.
Remember static electricity. In winter or dry spaces, a static discharge from your fingers can burn the sensitive electronics of the board, work in antistatic gloves or periodically touch a grounded metal object.
⚠️ Warning: If you damage a touchscreen or display plume during the disassembly process, you can't repair it with tape. You'll need a complete replacement of the module assembly, which is much more expensive.