How to remove a watch from the bracelet Xiaomi Mi Band 4: 3 proven ways + typical errors

The Xiaomi Mi Band 4 fitness bracelet remains one of the most popular gadgets for tracking activity, despite the release of new models. Its reliability and functionality are time-tested, but sooner or later, owners face the question: how to safely remove an electronic capsule from a silicone strap?

At first glance, this may seem trivial, but in practice, many people face difficulties: a jammed mechanism, fear of breaking a latch or damaging contacts. In this article, we will discuss three official ways of removing a capsule (including a little-known method using a paper clip), analyze common errors that lead to breakage, and give recommendations for the care of contacts after dismantling.

If you have never disassembled the Mi Band 4 or previous models of the series, we advise you to carefully study the instructions to the end: the article has unique techniques for bracelets with deformed slots that are not described even in the official documentation of Xiaomi.

Preparation for extraction: what will be needed and precautions

Before you start dismantling, make sure you have everything you need on hand, and most tools will be found in every home, but some will have to be purchased in advance — especially if you plan to change your straps often or do repairs.

• 🔧 A plastic blade or mediator is the best option for gently slapping the latch. Metal objects (knives, screwdrivers) can scratch the body.
• 📎 Paperclip or thin screwdriver – required for an alternative method (see Section 3).
• 🧴 Silicone lubricant or alcohol - for cleaning contacts after extraction (if the capsule is not removed for a long time).
• 📦 Soft cloth or napkin – to put the capsule in and not scratch the screen.

It is important to consider the condition of the bracelet before dismantling:

• 💧 If the Mi Band 4 has recently been in contact with water (such as after a pool), let it dry completely within 12 to 24 hours.
• 🔥 Avoid manipulations in extreme temperatures (below). +10°C or higher +30°C) - plastic becomes brittle.
• 🔋 If the bracelet is discharged, it is better to charge it to 30-50% before removal, this will help to avoid failures during subsequent installation.

⚠️ Warning: Do not try to remove the capsule if there are cracks on the strap near the latch slots, in which case it is better to replace the strap first, so as not to damage the contacts of the capsule.

Method 1: Standard method using a plastic shoulder blade (official recommendation of Xiaomi)

This method is described in the manual for Mi Band 4 and is considered the safest, it is suitable for most silicone straps, but requires care - especially if the bracelet was used for a long time without removing the capsule.

Algorithm of action:

1. Put the bracelet on a flat surface with the screen down, which will protect the display from accidental scratches.
2. Take a plastic spatula (or mediator) and insert it into the gap between the capsule and the strap on the side opposite the display.
3. Carefully push the blade down while pulling the strap aside, and a slight click should be heard, which means that the latch has come out of the groove.
4. Repeat the action on the other side of the capsule, then remove it from the strap.

If the latch fails the first time, don't put too much effort into it. Try to sway the blade slightly left-right to unravel the mechanism. 90% of the time, the problem is solved after 2-3 attempts.

Check that the bracelet is screen down.|Use only a plastic spatula.|Press the gap closer to the center of the capsule.|Do not force if the latch does not yield.-->

⚠️ Warning: If you hear a squeak or crack when pressed with a shoulder blade, stop trying immediately.This may mean that the plastic slot of the strap has cracked - further manipulation will lead to breakage.

Method 2: Alternative paper clip method (for bracelets with tight latch)

This is a useful technique if the standard method has failed or the latch has become stuck due to long-term use, requiring greater precision, but is effective even for bracelets that have not been removed in years.

Step-by-step:

1. Untighten the stationery clip so that a straight metal bar 3-4 cm long is obtained.
2. Find two small holes on the back of the capsule (they are symmetrically located on the sides of the center) and these are the technological slots to unlock the latch.
3. Put the paperclip in the left hole and gently press down until you feel resistance. Then repeat the same with the right hole.
4. Holding the paperclip in one of the holes, pull the strap to the side - the capsule should come out effortlessly.

This method is often used in service centers, because it minimizes the risk of damage to plastic parts, but be careful: if you overdo it with a clip, you can bend the metal latch inside the capsule.

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If the paperclip does not enter the hole, try to slightly twist it clockwise - this will help find the right angle to press.

Method 3: Thermal method (for bracelets with deformed grooves)

If the two previous methods didn't work, the problem could be the deformation of the plastic slots of the strap, in which case local heating will help, which will temporarily soften the material and allow the capsule to be removed without damage.

You'll need:

• 🔥 Hair dryer (with temperature adjustment)
• 🧊 A cube of ice or cold water (for cooling)
• 🧤 Wearing cotton gloves (so as not to burn yourself)

Algorithm:

1. Heat the latch area on the strap with a hairdryer for 10-15 seconds at minimum power. Keep the hairdryer 15-20 cm away so that the plastic doesn't melt.
2. Immediately after heating, try to remove the capsule with a plastic blade (see method 1). The plastic will become more elastic, and the latch should respond.
3. After successful extraction, cool the strap with ice or cold water to return it to its original shape.

⚠️ Warning: Do not heat the capsule directly - this can damage the battery or display. Direct the air flow only to the remesh in the grooves area.

This method is especially effective for bracelets that have been used in extreme conditions (such as low temperatures or high humidity), but it is not worth abuse: frequent heating reduces the life of the strap.

Features of extracting the capsule from metal straps

Metal straps for the Mi Band 4 (such as the Mi Band 4 Metal Strap) have a fundamentally different latch design, where the capsule is fixed not by plastic slots, but by metal clips that require a different approach.

Key differences:

• 🔗 The clamps are located on the side of the capsule, not at the bottom.
• 🔧 To remove you will need a thin screwdriver with a flat tip (1-1.5 mm).
• ⚙️ The mechanism is more reliable, but with careless handling, you can scratch the capsule body.

Step-by-step instructions for a metal strap:

1. Put the bracelet on the table and find a small screwdriver slot on the side of the capsule.
2. Insert the screwdriver into the groove and gently turn it counterclockwise until the clamp loosens.
3. Repeat the action on the other side, then move the capsule to the side.

Important: Metal straps are often equipped with spare clips (in a box or on an extra bar).If the original clip breaks, it can be replaced without buying a new strap.

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For metal straps Mi Band 4 categorically can not use plastic blades - they will simply break against metal clamps.

Common Mistakes and How to Avoid Them

Even experienced users sometimes make capsule removal errors that cause breakdowns, and we've collected the TOP-5 most common misses and explained how to prevent them.

1. Using a knife or scissors - metal objects scratch the body and can damage the contacts to charge.Always use plastic or silicone tools.
2. Pressure on the display often results in “broken pixels” or cracks. The capsule only needs to be poked on the back.
3. Ignoring the snap of the latch -- if you don't hear the characteristic sound, you don't unlock the mechanism, and if you continue to manipulate it, you're going to break down.
4. Cleaning contacts with alcohol without power out – even the Mi Band 4 turned off has a residual charge. Use 90%+ isopropyl alcohol and let the contacts dry for 10-15 minutes.
5. Storing the capsule without a strap - open contacts oxidize faster. If you plan to stay off the bracelet for a long time, wrap the capsule with food film.

Another common problem is damage to the sealing ring (the rubber gasket around the capsule), which is responsible for moisture protection, and its loss will lead to dust and moisture entering the device. When removing the capsule, always check if the ring is still in place.

What to do after extraction: cleaning and diagnosis

When the capsule is finally removed, don't rush to put it in a new strap, and do a preventive cleaning and diagnostics to avoid problems in the future.

Checklist for care after dismantling:

• 🔍 Examine the contacts on the capsule and strap for oxidation or dirt. Clean them with a cotton swab soaked in alcohol.
• 💧 Check the O-ring – if it is torn or deformed, replace it (you can order it on AliExpress at the request “Mi Band 4 gasket»).
• 🔋 Connect the capsule to charge for 5-10 minutes to make sure the contacts are working correctly.If the bracelet is not charging, the problem may be oxidation.
• 📏 Measure the gap between the capsule and the new strap - it should be no more than 0.5 mm. If the gap is larger, the strap is unoriginal and may fall out.

If you notice that after cleaning the bracelet became worse to hold charge, perhaps the problem is the wear of the battery. For the Mi Band 4, a critical drop in capacity below 60% of nominal (the original battery is 135 mAh), in which case only replacing the battery in the service center will help.

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To extend the life of the sealing ring before installing the capsule, apply a thin layer of silicone lubricant (such as WD-40 Specialist) to it.

FAQ: Answers to Frequent Questions