Xiaomi Mi Body Composition Scale 2: How to connect your phone in 5 minutes

The Xiaomi Mi Body Composition Scale 2 is not just a weight measuring device, but a full-fledged body composition analyzer with 13 key metrics: from fat percentage to muscle mass. However, many users face difficulties when connecting the device to a smartphone for the first time. Unlike classic scales, it requires synchronization through Mi Fit or Zepp proprietary applications, setting up a Bluetooth connection and creating a user profile.

In this article, we will take a step-by-step connection algorithm with everything from unpacking the device to interpreting the first results. We will focus on common errors (for example, when the scales are not determined by the phone) and how to fix them. If you just purchased the Mi Body Composition Scale 2 or are planning to buy, keep this instruction to avoid common problems.

What is included in the kit and how to prepare the scales for work

Before connecting, make sure that the weight box has all the necessary components. The standard Xiaomi Mi Body Composition Scale 2 includes:

• 📦 Main device (libras with touch panel)
• 🔋 4 type batteries AAA (Sometimes in a package, sometimes you need to buy separately)
• 📄 Short instructions in several languages (Russian is usually present)
• 🔧 Screwdriver for replacement of batteries (if batteries are removable)

Important: some batches of scales come without batteries — check this out right away. If batteries are missing, use high-quality alkaline cells (like Duracell or Energizer), cheap ones can cause unstable sensors.

Preparation of the scales for the first inclusion:

1. Turn the device over and remove the protective film from the contacts of the battery compartment.
2. Install the batteries, observing polarity (the diagram inside the compartment indicates the location of "+" and "-").
3. Press the on button (usually located below the display) – the Mi logo should appear on the screen.
4. Wait for self-testing (the scales will emit a short beep and go out).

💡

If the scales don't turn on after the batteries are installed, check the density of the contacts, sometimes it helps to easily press the battery compartment cover before you click.

What applications are needed to connect

The Mi Body Composition Scale 2 scales work exclusively through official Xiaomi apps, with two options available to choose from:

If you already have other Xiaomi devices (like the Mi Band bracelet), it makes sense to use the Mi Fit, all the data will be collected in one place. For users focused on detailed analytics, Zepp will do.

⚠️ Attention: Some users report sync issues in Zepp for older versions of scales.If your model is released before 2021, start with Mi Fit.

Step-by-step instructions: how to connect the scales to the phone

Consider the Mi Fit connection process (for Zepp, the algorithm is similar to minor interface differences).

• 📱 Bluetooth enabled on the phone (version 4.0 or higher).
• 🌐 Internet access (to download a device profile).
• 🔋 Libras are on and near the phone (maximum 1-2 meters).

Follow the instructions:

1. Install and open the Mi Fit app. You will need to register a Xiaomi account when you first start (you can use email, phone number or Google/Apple account).
2. Add a new device. Click on the + icon in the upper right corner → select Libra category → find the Mi Body Composition Scale 2 model.
3. Follow the Connection Wizard. The app will suggest you stand on a scale -- do it with your bare feet (the socks distort the sensor readings).
4. Synchronize the data. Once you've successfully connected, the scales will sound, and your first result will appear in the app.

Bluetooth on your phone

The scales are on a flat surface.

Batteries installed correctly

Mi Fit/Zepp app updated to latest version

-->

If the scales are not determined, try:

• 🔄 Reboot Bluetooth on your phone (Settings) → Bluetooth → Off./On.).
• 📱 Remove the scales from the list of devices in Bluetooth settings and reconnect.
• 🔋 Replace batteries (even if they are new – factory marriage is possible).

User profile setting and calibration

Once the scale is connected, you need to fill in the personal data in the application, the accuracy of this information depends on the correctness of the measurements. Go to the Profile section and specify:

• 👤 Gender (male/female)
• 📏 Growth (in centimeters)
• 🎂 Date of Birth (to calculate metabolic age)
• 🏋️ Target weight (optional, to track progress)

⚠️ Note: If you indicate the wrong height (for example, 170 cm instead of 180 cm), the scales will overstate the percentage of body fat by 2-5.

For calibration of the scales:

1. Stand on the scale without shoes and socks (the stops should touch all four sensors).
2. Stand still for 5-10 seconds until the result appears on the screen.
3. Repeat the procedure 2-3 times to check the stability of the readings.

If the scales show a “Lo” (low battery charge) or “Err” (measuring error), then:

• 🔋 Batteries are discharged or installed incorrectly.
• 👣 You are not standing tight enough on the sensors (try to move your legs closer to the edges of the scales).
• 🌡️ The scales are on a carpet or uneven surface (transfer to a tile or laminate floor).

Sync with other services (Google Fit, Apple Health)

One of the key benefits of the Mi Body Composition Scale 2 is the ability to integrate with popular fitness platforms, which allows you to collect all your health data in one place, to set up synchronization:

For Google Fit (Android):

1. Open Mi Fit → Profile → Settings → Data Synchronization
2. Select “Google Fit” and log in through your Google account.
3. Allow access to data on weight, body composition and activity.

For Apple Health (iPhone):

1. In Zepp, go to Profile → Settings → Apple Health.
2. Activate the switches in front of the parameters you want to sync (weight, percent fat, muscle mass, etc.).
3. Confirm access in the pop-up window.

⚠️ Note: When synchronized with Apple Health, bone mass and visceral fat data may not be shared due to limitations API. In this case, use the original Zepp app to view the full statistics.

Common mistakes and their solutions

Even with the right connection, users face typical problems, and consider the most common ones and how to fix them:

1. Libras are not included

Reasons:

• 🔋 Discharged or improperly installed batteries.
• 🔌 Factory marriage of contacts (resolved by replacing batteries with new ones).
• 🌡️ Low room temperature (libras may not work at lower temperatures) +10°C).

Solution: Check the batteries with a multimeter (voltage should be at least 1.3V on each cell). If the problem persists, contact the service center.

2.The scales show an "Err" error

Reasons:

• 👣 Incorrect position of the legs on sensors.
• 🧦 Socks or shoes on the feet.
• 💧 Wet or dirty electrodes (wipe them with a dry cloth).

Solution: Stand on the scale with your bare feet, spreading the weight evenly, and make sure that the feet touch all four metal contacts.

3. Data not stored in the annex

Reasons:

• 📱 There is no internet connection on the phone.
• 🔄 Conflict with other Bluetooth devices.
• 📲 An outdated version of the Mi app Fit/Zepp.

Solution: Update the app, restart the phone, and re-sync. If the problem persists, remove the scales from the device list and reconnect.

💡

Most of the errors are due to an unstable Bluetooth connection. Always make sure that the phone does not have active connections to other gadgets (earphones, fitness bracelets) during sync with the weights.

How to interpret the measurement results

The Mi Body Composition Scale 2 provides 13 parameters, but not all users understand what the metrics mean.

• 📊 Weight: Total body weight in kilograms, measured to within 50 grams.
• 💧 Water percentage: 50-65% for men, 45-60% for women, low levels may indicate dehydration.
• 🍖 Fat percentage: Optimal values: 10-20% for men, 20-30% for women. Excessiveness increases the risk of cardiovascular disease.
• 💪 Muscle mass: Shows the weight of muscles in kilograms, important for athletes and people who follow the figure.
• 🦴 Bone mass: Weight of bones in the body. Low values may indicate a lack of calcium.
• ⚡ Basic metabolism (BMR): The number of calories your body uses at rest, used to calculate your daily calorie intake.

⚠️ Attention: Visceral fat (fat around internal organs) above 10-12 units are considered hazardous to health.

To accurately track your movements, weigh yourself at the same time (preferably on an empty stomach in the morning) and under the same conditions (e.g. after going to the toilet), and the difference in weight during the day can be as high as 1-2 kg due to water and food intake.

FAQ: Frequent questions about Xiaomi Mi Body Composition Scale 2