How to Open the Xiaomi Mi Band Watch: Instructions with Photos and Videos

Xiaomi Mi Band fitness bracelets have become one of the most popular wearables due to a combination of functionality, compactness and affordable price. However, over time, users have to disassemble the case: replace the strap, clean the contacts, change the battery or repair the button. Unlike smartphones, where the back cover is usually fixed with latches or screws, the Mi Band watch has a unique mounting system that is easily damaged if opened incorrectly.

This article will help you safely open the case of Xiaomi Mi Band (including Mi Band models). 3/4/5/6/7/8), Without breaking the latches or damaging the waterproof seal, we're going to look at the official and alternative methods, the tools that actually work, and the typical errors that make the device stop turning on after disassembly. If you plan to replace the strap or battery yourself - here you will find step-by-step photos, videos and tips from repair masters.

Why do you need to open a Xiaomi Mi Band watch?

Most users are faced with the need to disassemble the bracelet in the following cases:

• 🔄 Replacement of the strap – standard silicone straps wear out in 1-2 years, and original parts are expensive. Alternative straps (such as metal or leather) require removal of the module.
• 🔋 Battery replacement – battery capacity decreases after 300–500 Charging cycles in the Mi Band. 3/4 It's happening through 2–3 In the newer models less often.
• 💧 Contact cleaning – oxidation or contamination of charging contacts leads to poor cable connection, often solved by simple alcohol cleaning.
• 🛠️ Repair of the button - in the Mi Band 3/4 The physical button will stick or stop working over time in new models (starting with the Mi Band). 5) touch button, but there may be problems with the touchpad.
• 🚿 Violation of tightness - after a fall or a strong impact, the seal may be damaged, which leads to moisture entering the body.

It is important to understand that disassembling the bracelet deprives it of warranty (if it is still valid). In official service centers Xiaomi replace the strap or battery is performed in 1-2 days, but the cost of the service is often comparable to the price of a new device. For example, replacing the battery in the Mi Band 6 costs 1,500-2000 rubles, while a new bracelet costs from 2,500 rubles.

Preparation for disassembly: tools and precautions

Before opening the Xiaomi Mi Band case, prepare the following tools:

⚠️ Warning: Don't use metal screwdrivers or knives, they leave scratches on the plastic and can damage the plumes inside the case. 5/6/7/8, Note that these models have extra glue around the perimeter of the lid. It's almost impossible to open them without heating!

Also prepare the workplace:

• 📸 Take a picture of the bracelet from all sides before disassembling it – this will help to properly assemble it back.
• 🧹 Work on a clean, light surface (like a piece of paper) to avoid losing small details.
• ⚡ Disconnect the bracelet from charging 2-3 hours before disassembly - this will reduce the risk of short circuit.

Prepare tools|Take a picture of the bracelet|Turn off charging.|Set the details in order|Wear an antistatic bracelet (optional)-->

How to Open Xiaomi Mi Band (Models 3-8)

The disassembly process varies depending on the generation of the bracelet, and the following is a universal algorithm, as well as nuances for specific models.

1. Removal of the module from the strap

In most Mi Band models (except the Mi Band 8 with quick-removal mount), the module is locked into the strap using two plastic latches to remove it:

1. Put the bracelet on the table with the screen down.
2. Carefully press the module from the side (from the button side) and pull it up and to the side.
3. If the module does not respond, put it with a plastic spatula from the end (not from the screen side!).

2. Opening of the back cover

This is the most important stage. 3/4 lid 4 The slats (on the corners), in the Mi Band 5–8 It's a little bit of glue:

For the Mi Band 3/4:

1. Insert a plastic blade into the gap between the lid and the body from the button side.
2. Carefully swipe the perimeter with your shoulder blade, pressing each latch, and you'll hear slight clicks.
3. When all the latches open, remove the lid.

For the Mi Band 5/6/7/8:

1. Heat the body with a hair dryer (temperature 60–70)°C) for 30-40 seconds, evenly moving around the perimeter.
2. Put the lid on a thin spatula or paperclip on the side of the button (there is less glue).
3. Slowly separate the cover, if necessary, reheating the problem areas.

⚠️ Attention: In the Mi Band 7/8 And there's a flexible plume under the lid that connects the battery to the board. Don't pull the lid abruptly, it could rip off the plume. If it gets damaged, the bracelet will stop charging.

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If the glue is too strong, use a thread: slash it under the lid and gently saw it back and forth, heating the case, which reduces the risk of damage to the latches.

Removal of the battery (if necessary)

The battery in the Mi Band is glued to the body to replace it.

1. Disconnect the battery plume from the board (take tweezers carefully).
2. Warm the battery with a hair dryer (50-60)°C) within 20 seconds.
3. Tap the battery with a plastic spatula and slowly separate it from the body.
4. Clean the installation site from glue residues with isopropyl alcohol.

⚠️ Warning: Do not use metal tools to remove the battery - this can lead to short circuit! If the battery is swelling, do not try to prick it - it is dangerous!

Features of disassembling specific models

Each generation of the Mi Band has its own design nuances. Let's take a closer look at them.

Xiaomi Mi Band 3/4

The easiest models to disassemble.

• 🔧 The cover is held only on 4 plastic latches (without glue).
• 🔋 The 110mAh battery (in Mi Band 4) is soldered to the board, but the plume is easily detached.
• 💧 The sealing ring around the button is often lost when disassembling – don’t forget to put it back in place!

Xiaomi Mi Band 5/6

There's glue coming in here, but the lid still opens relatively easily.

• 🔥 Heated hair dryer required (60)°C) for softening the glue.
• 📱 Mi Band 6 added to the mix AMOLED-display that is sensitive to pressure – do not press the screen when disassembling.
• 🔌 Charging contacts are located on a separate board - they are easy to damage during cleaning.

Xiaomi Mi Band 7/8

The hardest models to disassemble.

• 🔥 The glue is very durable - without heating to 70-80°C lid can't be opened.
• 🔋 Battery in Mi Band 7 (125 mAh) and Mi Band 8 (190 mAh) glued especially strongly.
• 🛡️ In Mi Band 8 added a protective screen of tempered glass – with careless disassembly, it can crack.
• 🔄 Quick removable strap mounting complicates the removal of the module - you need to press the hidden latch from the side.

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The Mi Band 8 uses a two-part glue that hardens when in contact with air. If you plan to reassemble the bracelet, apply a new glue (e.g., a new one, B-7000) perimeter.

Common Mistakes and How to Avoid Them

Even experienced users sometimes make mistakes when disassembling the Xiaomi Mi Band, and here are the most common ones and ways to prevent them:

One of the most frustrating mistakes is the damage to the flexible plume between the battery and the board. In the Mi Band 5-8, it is very thin and easily breaks when the lid is not opened neatly. If the plume breaks off, the bracelet will stop charging, but can continue to work on the battery, in which case it will require soldering or replacement of the plume (which is almost impossible at home).

Another common problem is that the charging contacts are damaged, and they're on a separate circuit board, soldered to the main board with thin wires, and when cleaning the contacts, don't use abrasive materials like sandpaper, which will cause them to be erased, and you'd better use a cotton swab dipped in alcohol.

What to do after disassembly: Assembly and inspection

When all the manipulations are complete (replacement of the strap, battery or cleaning), you need to properly assemble the bracelet back.

1. Check all details: make sure the O-ring (if any) is in place and the plumes are not damaged.
2. Apply the glue (for Mi Band 5–8): Use a thin layer of glue B-7000 Or a perimeter-like lid, and don't overdo it, because the glue can get into the body.
3. Set the lid: start at the side of the button, press it gently until the snap of the latch. For models with glue, press the lid for 1-2 minutes.
4. Insert the module into the strap: make sure the latches are locked (you should hear the click).
5. Check the operability: connect the bracelet to the charge and make sure it turns on. If the screen does not respond, check the connection of the display plume.

⚠️ Warning: After assembly of the Mi Band 5-8, it is not recommended to use the bracelet immediately. Let the glue dry for 12-24 hours, otherwise the leakage will be broken.

If the bracelet is not turned on after assembly:

• 🔌 Check the battery connection - it is possible that the plume is not fully inserted into the connector.
• 🔋 Connect the bracelet to charge for 10-15 minutes – sometimes a discharged battery does not show signs of life.
• 🛠️ If the screen does not respond to touch, check the connection of the display (in the Mi Band 5-8 it is connected through a separate plume).

Where to buy spare parts for Xiaomi Mi Band?

If you need original or compatible parts (batteries, straps, covers), here are the proven sources:

When buying a battery, pay attention to capacity and size. For example, the Mi Band 6 uses a 125 mAh battery, and the Mi Band 8 uses a 190 mAh battery. Installing a larger battery can cause the body to bloat or overheat.

If you buy a strap, check compatibility with your model. For example, the Mi Band 4 straps won't work for the Mi Band 7 because of the changed mounting. The original Xiaomi straps can be found in brand stores, but they're more expensive than their AliExpress counterparts.

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Check the seller's reviews before buying parts. AliExpress often sells batteries with low capacity. Target sellers with a rating above 98% and order counts. >1 000.

FAQ: Frequent questions about the dismantling of Xiaomi Mi Band