How to disassemble Mi Band 4: disassembly and replacement of the strap

Owners of fitness trackers often face the need to replace a worn strap or simply clean the device of dirt and sweat accumulating in the joints. Xiaomi Mi Band 4 model became a real hit thanks to its AMOLED-It's a very long time, but the design of the capsule has its own characteristics, and many users mistakenly believe that to replace the tape, you need to disassemble the body or unplug the screen, which is a gross mistake and leads to breakage.

In fact, disassembling the Mi Band 4 in a maintenance context means properly removing the central module, or "capsule," from the silicone base, which does not require special tools like screwdrivers or suction cups, but requires an understanding of the mechanics of the latches. Wrong actions can damage the elastic material or even chips on the tracker body.

In this guide, we will take a detailed look at the safe algorithm for removing the module, discuss the nuances of working with materials and answer frequent questions. You will learn why you should not use sharp objects and how to extend the life of your gadget accessories. Careful follow the instructions will help you avoid common mistakes of beginners.

Design features of the body Mi Band 4

The fourth-generation fitness bracelet consists of two main components: a plastic capsule with electronics and a screen, and a silicone strap that acts as a body. The capsule has an elongated oval shape and is attached inside the strap by a system of grooves and protrusions. On one side, the strap has a rigid insert, and on the other, elastic "ears" that cover the edges of the tracker.

The materials used by the manufacturer are designed to be moisture-resistant and durable. Silicone straps are highly elastic, but can stretch or tan over time. The capsule's plastic is made of a durable polycarbonate that is scratch-resistant but sensitive to strong point pressure. Understanding the properties of these materials is critical for safe use.

⚠️ Warning: Attempts to disassemble the plastic capsule itself (unplug the screen or open the back cover) will result in loss of moisture protection and cancellation of warranty.

The mounting of the module is a swallowtail, and the tracker is inserted into the frame at an angle, and then fixed by the protruding parts of the frame, which is why you need to follow a certain sequence of movements to extract it, rather than pulling it with force. Violation of the bend geometry can lead to breakage of the plastic mounts of the strap.

Tools and workplace preparation required

One of the main advantages of the Mi Band 4 design is minimal maintenance. You don't need a sophisticated arsenal of electronics repairmen. You can use your hands and possibly a soft surface to clean the pod or replace the strap.

If the strap is new and very tight, or the silicone is old and has lost its elasticity, it can be difficult to handle fingers. In such situations, experienced users recommend using a thin plastic card (for example, an old business card) or a special tool to open electronics. Metal objects such as knives or screwdrivers, it is strongly recommended not to use, as they can damage the screen or scratch the body.

Prepare the workplace. The best way to do this is to manipulate a table with a soft cloth, which will protect the device from accidental fall and scratches, and make sure that there is enough light in the room to see the small details of the mounting and grooves.

Step-by-step: how to remove the capsule

The process of removing the tracking module from the silicone frame requires accuracy and understanding the direction of travel. You should not use excessive force. If the device does not come out easily, then you have violated the angle of inclination or not bent the latching element sufficiently.

Follow the algorithm to avoid damage:

• 🖐️ Take the bracelet in your hands so that the screen looks at you, and the inside of the strap (with a pulse sensor) is facing your palm.
• 🔄 With the thumb of one hand, press the convex part of the silicone on the back of the screen, pushing the module outwards.
• 📐 At the same time, with the other hand, pull the elastic “eye” of the strap aside, freeing the way for the capsule to exit.
• 🚀 Carefully squeeze the tracker, gradually moving the pressure point from the center to the edges until it leaves the seat.

Sometimes users are faced with a situation where the module is sitting very tight, in which case you can slightly warm up the silicone in your hands or use a dryer at a minimum temperature (without overheating the electronics), the heat will make the material more malleable. After extracting, examine the grooves for pile or dirt that may have accumulated during wear.

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To facilitate the re-installation of the new strap, you can preheat its seat with a hairdryer for 10-15 seconds - the silicone will become softer and more elastic.

Installation of a new strap and fixation of the module

Installing a capsule in a new strap often raises more questions than removing it. It is important to properly orient the module with respect to the light points and sensors. On the inside of the capsule, next to the charging contact areas, there is usually a small ledge or bevel that should coincide with the corresponding slot in the silicone.

The installation process is as follows:

• 📱 Take the strap and find a side with a wider and stiffer mount.
• 🔌 Insert the bottom of the capsule (where the contacts are for charging) into the appropriate slot of the strap at an angle of approximately 45 degrees.
• 🔙 Smoothly press on the top of the tracker, while pulling the upper "eye" of the strap.
• ✅ Make sure that the capsule sits flat and does not protrude anywhere beyond the silicone frame.

Once installed, swipe your finger around the perimeter of the plastic-silicone junction. There should be no gaps or slits that water could get into. If you feel the module hanging, maybe the strap is defective or too stretched. A quality accessory should keep the tracker dead even if it is shaken.

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The correct orientation of the module during installation is critical: if you confuse the top and bottom, charging the device will become impossible without re-disassembly.

Comparison of compatible straps for Mi Band 4

The accessories market for Xiaomi Mi Band 4 is huge, and in addition to standard silicone tapes, there are leather, metal, textiles and even wood models, but not all of them are equally comfortable to use and safe for the capsule.

Metal and leather straps often have a stiffer seat design. When you install the capsule in such accessories, the risk of damaging the side faces of the plastic is higher. It is recommended to be especially careful and take your time. Velcro textile straps often have a plastic frame insert, which may differ in geometry from the original.

When buying third-party accessories, pay attention to the testimonials about the accuracy of the dimensions. Cheap copies can be too tight or, conversely, too loose landing pad, which affects not only the ease of wearing, but also the safety of the device when playing sports.

Cleaning and maintenance after disassembly

Removing the capsule is the perfect time to clean, and while wearing it, sweat, skin fat and dust accumulate under the strap, which can cause skin irritation or unpleasant odor, and dirt can get into the contacts of the charger.

Use soft fabric lightly moistened with water or a special solution to clean electronics to clean the cleaning. You can use a cotton swab for hard-to-reach places, such as around the pulse sensor. Aggressive chemicals, high concentration alcohol or abrasives should not be used, as they can damage the oleophobic coating of the screen or make the plastic matte.

⚠️ Warning: Before cleaning, make sure that the charging connectors are completely dry. Do not immerse the capsule in water, even if the waterproof is declared, as the leakage may have been disturbed by mechanical stress.

After cleaning, allow the device to dry completely before placing it in the strap, the humidity inside the new strap will create the perfect environment for bacteria to multiply, and regular cleaning (once every 1-2 weeks) will prolong the life of both the bracelet and accessories.

Possible problems and solutions

Users can face a variety of challenges in the process of operation, and the most common problem is that the strap breaks at the mounting site, and this often happens with cheap analogues or with metal straps where the sharp edges of the metal rub the silicone, the solution is one: replace it with a better accessory or use adapters.

Another problem is that the capsule falls out spontaneously, which is a sign that the silicone of the strap has stretched or the latches have deformed, and then it's dangerous to continue wearing this strap, because you might lose an expensive module, and it's recommended that you replace the base immediately.

If you damage the screen or body during removal, further operation may be unsafe, cracks in the case violate water protection, in such cases it is better to contact a service center or replace the damaged part, if possible.