Metal strap for Xiaomi Mi Band 4: how to adjust and wear without discomfort

Why the Mi Band 4 Metal Band Requires a Special Approach

The Xiaomi Mi Band 4 fitness bracelet with its factory silicone strap is comfortable, but not everyone likes its appearance or tactile sensations. Metal bracelets are a popular alternative: they look stylish, stronger and last longer and retain a presentable appearance. However, their adjustment has nuances that are often overlooked. Unlike elastic silicone, the metal does not stretch, and the wrong size can lead to loss of the device, scratches on the body or even skin damage.

In this article, we will discuss how to precisely fit the metal strap under the wrist, avoid typical installation errors and maintain the functionality of the Mi Band 4. Particular attention will be paid to models with latches of different types (spring, magnetic, screw), since the adjustment algorithm for them is different, and you will learn what tools will be needed to avoid damaging the bracelet and the tracker itself.

What tools will be needed to adjust

Before you start setting up, prepare the necessary tools, without which you risk scratching the body of the Mi Band 4 or breaking the latch mechanism.

• 🔧 Flat screwdriver (preferably with a thin sting, suitable for watches or glasses) for putting spring pins in latches.
• 📏 A line or a rod that will help measure the exact distance between the holes on the strap.
• 🧲 Magnet (optional, but useful) makes it easy to put the spring pins back in if they fall out.
• 🧴 Silicone lubricant or petroleum jelly, applied to the rubbing parts of the latch for smooth running.
• 🔍 A lens or a flashlight, lights up small details if you work in a poorly lit place.

If your strap has a screw mechanism (found in premium models), additionally prepare a cross screwdriver of the appropriate size. For magnetic latches, tools are not required, but tweezers may be needed to carefully bend the locks.

Step-by-step: how to remove and install a metal strap

The adjustment process starts with the removal of the factory silicone strap, and it's important to keep the connectors on the Mi Band 4 body intact, because they're fragile.

1. Place the bracelet on a soft surface (such as a towel) to avoid scratching.
2. Find two buttons on the back of the body on the sides of the strap, press them simultaneously in the direction of the arrow (usually down), and pull the strap to the side.
3. Carefully remove the tracker from the mount. Don't make any effort - if you don't, check if the buttons are fully pressed.

Now install the metal strap:

Lock the tracker in the new strap by pairing connectors with slots | Check that the buttons are snapped with a characteristic click | Make sure the Mi Band 4 screen is not touching metal (risk of false touches) | Adjust the length of the strap around the wrist

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If the strap is equipped with spring pins, use a screwdriver to tuck them in the side and take them out to adjust the length. For screw models, unscrew the bolts counterclockwise, but not completely, otherwise you risk losing small parts.

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Before you first install the metal strap, check its compatibility with the Mi Band 4. Some models are designed for the Mi Band 5/6 and may not fit the size of the connectors.

How to fit the strap according to the size of the wrist

An improperly adjusted metal strap can rub the skin or, conversely, dangle, increasing the risk of loss of the bracelet.

1. The gap between the strap and the wrist should be 1-1.5 cm (about the width of the finger), which will allow the skin to breathe and avoid rubbing.
2. Density of fit – the bracelet should not scroll around the hand, but should not squeeze it.

Adjustment instructions:

1. Put a strap on your wrist and mark where the last hole is, which is still convenient for fixing.
2. Remove the strap and disconnect the extra links (if it is a chain type) or move the pin to the desired hole (if it is a monolithic strap).
3. For spring pins, insert a screwdriver into a small hole on the side of the latch and gently squeeze the pin out. Move it to the desired position and lock it back.
4. For screw models: loosen the bolts, adjust the length and tighten them back, but don't overdo it - it can warp the thread.

After adjustment, check if the strap is blocking the heart rate sensor on the back of the Mi Band 4. If so, relax the fixation by 1-2 holes.

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Metal straps with magnetic latches are less reliable for an active lifestyle. If you are exercising, choose models with spring or screw latches.

Common Mistakes and How to Avoid Them

Even experienced users sometimes make mistakes when adjusting metal straps, and here are the most common ones and ways to prevent them:

• 🔨 Tug-tug screws. This deforms the thread and can cause the latch to break. Use a screwdriver with a torque limiter or tighten the bolts manually without effort.
• 🧲 Ignoring magnetic interference: Metal strap can affect the accuracy of Mi Band 4 sensors, especially the compass. Check readings in the Mi Fit app after installation.
• 💦 Wearing without adaptation: Metal can irritate the skin in the early days, apply a thin layer of cream on your wrist or use a silicone backing.
• 🔄 Adjustment "by eye." Always measure the length of the strap taking into account 1-1.5 cm of clearance, otherwise you risk compressing the vessels or losing the bracelet.

Another common problem is rubbing the tracker body against metal, so to avoid this, stick a thin transparent film (for example, from screen protections) on the inside of the strap or use silicone pads.

How to care for a metal strap so it lasts longer

Metal, unlike silicone, requires regular maintenance, and without it, the strap will lose its luster, the latches will start to bite, and skin irritation may occur.

• 🧼 Clean. Wash the strap with a wet wipe with soap solution 1-2 times a week. For hard-to-reach places, use a toothbrush.
• 🌡️ Avoid extreme temperatures. Do not leave the bracelet in direct sunlight or near heat sources, which can warp the latches.
• 🚫 Contact with chemicals. Remove the strap before using perfume, lotions or chlorine detergents.
• 🔋 Lubricant. Once a month, apply a drop of silicone lubricant to spring pins or screws for smooth running.

If the strap is covered PVD-coating (e.g., "black gold" or "rose gold"), avoid abrasive cleaning products - they will erase the decorative layer. For such models, use only soft fabrics and special polishes for metal.

⚠️ Warning: Do not wash the metal strap under running water - getting moisture into the latches can cause corrosion. After cleaning, be sure to dry it in air for 10-15 minutes.

Mi Band 4 Compatibility: What to Know Before Buying

Not all metal straps are suitable for Xiaomi Mi Band 4.

• 🔗 Make sure the strap supports quick-release, like the original silicone mount.
• ⚖️ Weight: Too heavy models (over 30 g) can cause discomfort when worn for long periods of time.
• 📏 Width. Standard for Mi Band 4 - 18 mm. Straps 20 mm wide and no longer fit.
• 🔋 Impact on charging.Some metal models block access to charging contacts. check this before buying.

Also pay attention to the material:

Stainless steel is strong, but can cause allergies in sensitive users.

Titanium is light and hypoallergenic, but expensive.

Aluminum is a budget option, but less wear-resistant.

Before buying, check out the reviews of a particular model. For example, Bontiy or YCCTEAM bands are often praised for reliability, but there are complaints about tight latches in some batches.

Frequently asked questions

⚠️ Warning: If the Mi Band 4 has stopped syncing with your smartphone after installing the metal strap, check if the metal is shielding the signal. Try reconnecting the device in the Mi Fit app or temporarily returning the silicone strap for diagnostics.