How to connect Xiaomi Mi Body Composition Scale 2 smart scales to your smartphone: full instruction 2026

Why You Need Xiaomi Mi Body Composition Scale 2 and How They Work

The Xiaomi Mi Body Composition Scale 2 is not just a weight measurement device, but a full-fledged body composition analyzer. Unlike classic mechanical or electronic scales, this model uses bioimpedance analysis technology (BIA), This is a system that allows you to measure 13 key parameters, from body fat and muscle mass to body water and bone density, and automatically syncs with your smartphone through the Mi Fit or Zepp Life app, which helps you track the dynamics of changes in the long term.

The main advantage of the model is high measurement accuracy (an error of no more than 50 g) and Bluetooth 5.0 support, which provides a stable connection even at a distance of 10 meters.+ iOS 10.0+, They also integrate with popular fitness services like Google Fit, Apple Health and Strava, but before they are used properly, users often have questions about how to use them.

In this article, we will take a step-by-step connection instruction, look at common errors (such as when the scales are not in the application), and give recommendations for setting up for maximum measurement accuracy. If you have just unpacked the device or encountered problems after resetting, this guide will help solve the problem in 5-10 minutes.

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

Before you start setting up, make sure you have everything you need. The Xiaomi Mi Body Composition Scale 2 comes standard with:

• 📦 The scales themselves with a touch panel and display
• 🔋 4 AAA batteries (already installed in factory packaging)
• 📄 Short instructions in several languages (including Russian)
• 📱 QR-download code for the Mi application Fit/Zepp Life

Important: If you've bought a used scale or if you've been lying around for a long time, check the battery charge. Discharged batteries are one of the most common reasons why the device doesn't turn on or connect to the phone. Also, pay attention to the electrode coatings (metal platforms on the surface of the scales) they should be clean and dry - fat, sweat or moisture can distort the measurements.

Make sure the batteries are installed correctly (polarity!)

Wipe the electrodes with an alcohol napkin

Put the scales on a flat, hard surface (not on a carpet!)

Turn on Bluetooth on your smartphone

Download the Mi Fit or Zepp Life app-->

If the scales don't respond to pressing, try resetting them to factory settings.

1. Turn the device over and find the Reset button (usually hidden in a hole next to the battery compartment).
2. Take a paperclip or toothpick and press the button for 5-10 seconds until the 0.0 symbol appears on the display.
3. Wait for the reboot (the scales should squeak and show a welcome message).

⚠️ Warning: Do not use scales on the wet floor or bathroom while showering. Moisture in the body can lead to corrosion of contacts and inaccurate readings. Optimal temperature for measurements is 10–40°C.

Step-by-step: how to connect the scale to the phone through Mi Fit

The main way to sync is through the official Mi Fit app (for Android) or Zepp Life (for iOS), and although the application interfaces are slightly different, the connection algorithm is the same.

1. Download and install the app from Google Play or the App Store. Register or log in via your account Xiaomi/Zepp.
2. Activate Bluetooth on your smartphone and allow the app to access geolocation (this is necessary to search for devices).
3. Open Mi Fit, go to the Profile section → Add the device.
4. Select the Libra category and Mi Body Composition Scale 2 model.
5. Click Connect and wait until the scales appear in the list of available devices.
6. Confirm the pairing in the pop-up window on the phone.
7. After successful connection, the scales will emit an audio signal, and a tick will be displayed on the display.

If the scales don’t appear in the list of devices, try the following:

• 🔄 Reboot Bluetooth on your phone (turn off/on the module in the settings).
• 📱 Update the app to the latest version (outdated versions may not support the new model).
• 🔋 Replace batteries – even if they are new, factory marriage is possible.
• 📡 Check the distance – the maximum distance of the phone from the scales when connected should not exceed 1 meter.

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For accurate measurements, stand on the scale barefoot, spreading the weight evenly on both legs, avoiding measurements immediately after eating, exercising or taking a bath - this distorts the results.

Set up scales via Zepp Life (for iPhone users)

If you have an iPhone, instead of Mi Fit, you have to use the Zepp Life app — it is optimized for iOS and supports all weights, including synchronization with Apple Health. The connection process is almost identical, but there are a few nuances:

1. Download Zepp Life from the App Store and register (you can use Apple) ID).
2. On the main menu, click + → Add the device → Libra → Mi Body Composition Scale 2.
3. Follow the instructions on the screen. At the interface stage, allow the app to send notifications, which is necessary for stable operation.
4. After connecting, fill in the profile: specify height, age, gender and purpose (weight loss, weight gain or maintenance of shape).

Features of working with the iPhone:

• 🍎 Sync with Apple Health is enabled in Zepp Life settings (Profile) → Settings → Applications and services).
• 🔒 Permissions: The app needs Bluetooth, Notifications and Health. Without it, no data will be saved.
• 📱 Background: Apps in iOS often pause in the background. To sync scales automatically, add Zepp Life to exceptions (iPhone Settings) → Battery → Optimization of battery charge).

If after connecting the scales are displayed in the application, but do not transmit data, check:

⚠️ Attention: On iPhone with iOS 17+ You may need to manually confirm each Bluetooth connection, due to Apple's privacy policy, and to avoid constant requests, enable the "Connect Automatically" option in your Bluetooth settings (Settings) → Bluetooth → The "i" badge next to the scales).

How to Update Your Scale Firmware and Why It Matters

The manufacturer regularly releases firmware updates for the Mi Body Composition Scale 2, which improve measurement accuracy, add new features (for example, support for additional body parameters), and fix connection errors.

To update the firmware:

1. Open Mi Fit or Zepp Life and go to the connected device section.
2. Select your scales and find the Firmware Update (in Zepp Life it can be called System Software).
3. If a new version is available, click Update and wait for the process to complete (usually takes 2-5 minutes).
4. Do not turn off the scales from power and do not close the application during the update!

The latest firmware update at 2026 is 1.5.8.

• 📊 Support for viscosity index (vascular ageing indicator).
• 🔄 Improved sync with Google Fit and Apple Health.
• 🛠 Correction of a data zeroing bug when changing batteries.

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If the update is stuck in the Prepare to Install phase, reset the scales (press the Reset button) and repeat the process. If the problem is repeated, remove the scales from the application and reconnect them.

Important: Once the firmware is updated, the scales can show slightly different values from previous measurements, which is normal — new algorithms often correct the accuracy of the calculations.

Compatibility with other devices and services

Xiaomi Mi Body Composition Scale 2 is not limited to work only with Mi Fit and Zepp Life apps, they support integration with popular fitness trackers and platforms:

To connect to Google Fit or Apple Health:

1. Open the Mi Fit/Zepp Life app.
2. Go to Profile. → Settings → Applications and services.
3. Select the right service and log in.
4. Allow access to health data.

If the synchronization is not working:

• 🔄 Check if the option "Autosync" is enabled in the service settings.
• 📱 Update Google apps Fit/Apple Health care to the latest version.
• 🔋 Reconnect the scales to the main application (Mi) Fit/Zepp Life).

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For accurate sync with Apple Health, make sure your iPhone settings allow access to health data for Zepp Life. → Confidentiality → Health → Zepp Life).

Common Mistakes and How to Fix Them

Even with the right connection, users sometimes face problems, and let's look at the most common errors and ways to solve them:

1. The scales are not turned on or responsive to pressing

Reasons:

• 🔋 Batteries discharged or incorrectly installed.
• 🛠 Factory marriage or damage to contacts.
• 🌡 Extreme temperatures (below 0)°C or higher than 50°C).

Solution: Replace your batteries with new ones (preferably alkaline batteries like Duracell or Energizer). If that doesn't work, reset the settings with the Reset button.

2.The scales are connected but do not transmit data to the application

Reasons:

• 📱 The profile does not show height, age or gender.
• 🔄 Conflict with other Bluetooth devices (e.g. headphones).
• 📡 Weak Bluetooth signal (walls, interference).

Solution: Fill out the profile in Mi Fit/Zepp Life, disable other Bluetooth devices and repeat the measurement.

3.The evidence is very different from the real

Reasons:

• 🧴 Dirty or wet electrodes.
• 👟 Measurement in shoes or socks.
• 🍽 Measurement immediately after eating/workout.

Solution: Wipe the electrodes with alcohol, stand on the scale barefoot, take measurements in the morning on an empty stomach.

4.Libra disconnects from phone after firmware update

Causes: Synchronization failure due to the new version of the software.

Solution: Remove the scales from the list of devices in Mi Fit and connect them again.

⚠️ Warning: If the scale shows an error of "Err" or "Lo", this means exceeding the maximum load (150 kg) or the discharge of batteries.

FAQ: Answers to Frequent Questions