How to set up Xiaomi Mi Scale scales 2: Complete guide from connectivity to calibration

The Xiaomi Mi Body Composition Scale 2 (or simply Mi Scale 2) is not just a weight measuring device, but a full-fledged body composition analyzer with Bluetooth 5.0, 13 health parameters and synchronization with Mi Fit (now Zepp Life). However, even such an advanced device can raise questions for users: why the scales do not connect to the phone, how to reset or calibrate the sensors.

In this article, we will analyze all the stages of configuration - from unpacking to fine-tuning parameters, including solving typical problems. Particular attention will be paid to hidden features that Xiaomi does not advertise in the official instructions, such as manual calibration of sensors or changing the region to correctly display units of measurement. XMTZC05HM, XMTZC04HM) Compatible with the latest versions of Zepp Life (formerly Mi Fit) and Apple Health.

Preparation of scales for first inclusion

Before setting up, make sure you unpack and prepare the device correctly.Combined with the Mi Scale 2 scales must be:

• 📦 The scales themselves with a protective film on the sensors
• 🔋 4 type batteries AAA (sometimes installed)
• 📄 Short instructions in several languages (without Russian)
• ⚖️ Protective legs-stands (if the model with the function of weighing pets)

The first thing you need to do is to remove the protective film from the metal contacts on the top panel, which often goes unnoticed, but blocks the body composition sensors, and then check the batteries, if they're installed, remove them for 10 seconds and insert them back, and that will reset the possible shipping errors.

⚠️ Warning: Do not use rechargeable (Ni-MH) batteries - they give unstable voltage, which can cause the scales to show incorrect data or turn off during measurement (LR03)!

Set the scales on a flat, hard surface (tile, laminate, wood), a carpet or soft floor will distort the readings of the pressure sensors, to check the levelness, put a coin on the scales, it should not roll.

2. Install and configure the Zepp Life app (formerly Mi Fit)

Xiaomi Mi Scale 2 scales don't work autonomously, they need an app to synchronize data. Since 2023, the official Mi Fit app has been renamed Zepp Life, but the functionality has remained the same.

• 📱 App Store for iOS (requires iOS 12.0)+)
• 🤖 Google Play for Android (Android 6.0)+)

After installation:

1. Register with Xiaomi Account, Google or Apple ID.
2. Enter basic data: gender, age, height and target weight (this is critical for correct calculation). BMI muscle mass).
3. Go to the Devices section → Add the device → Libra.

If the app does not find the scales, check:

• 📶 Bluetooth is on the phone and the scales are within a radius of 1 meter.
• 🔋 Batteries are installed correctly (polarity!
• 📱 There's no active phone. VPN or firewall blocking Bluetooth LE.

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If the scales are not connected to the iPhone, try turning off the Bluetooth Limit feature in iOS settings: Settings → Bluetooth → i (information) → The limit of Bluetooth → Shut down.

3. Synchronization of scales with the phone: step-by-step instructions

The connection process takes no more than 2 minutes, if you follow the algorithm:

1. Activate the scales: step on them with one foot - 0.0 or 0.0 should appear on the display. --.
2. Start the search: in the Zepp Life app, click Add Device → Libra → Mi Smart Scale 2.
3. Confirm the connection: when the phone screen will appear number (for example, A1:B2:C3), The scales should be peeped and show the tick.

If the synchronization is interrupted, reset the scales:

1. Remove the batteries for 30 seconds.
2. Hold the on button (if any) or step on the scale and hold the weight for 10 seconds.
3. Reconnect the connection again.

Libra shows 0.0 when pressed|Phone found the device in the Bluetooth list|The app displays the current weight after weighing|Data saved in history-->

Once connected, the scale will automatically update to the latest firmware (if available).

⚠️ Note: If you use Xiaomi Mi Scale 2 with multiple phones (e.g. family access), the data will be duplicated. To avoid this, set up user profiles in the app: Profile → Family management.

Calibration of scales: why the data is inaccurate and how to fix

A common problem with Mi Scale 2 is the error in readings (for example, a difference of 0.5-1 kg compared to a mechanical weight).

• 🔋 discharged batteries (voltage below 1.2V per cell).
• 📉 Uneven surface or vibration.
• 🧲 External magnetic interference (e.g., near speakers or microwave ovens).
• 📱 Older Firmware (check out Zepp Life) → Devices → Update of the PO).

For manual calibration, follow the following steps:

1. Take a weight or an object of known weight (e.g. a bottle of water of 1.5 l = 1.5 kg).
2. Stand on the scale and write down the statement.
3. In the app, go to the Weight Settings → Sizing → Introduce reference weight.
4. Specify the real weight of the weights and save the settings.

If calibration doesn’t help, try resetting to factory settings:

1. Remove the batteries.


2. Press and hold the reset button (small hole on the back panel) for 15 seconds.




3. Insert the batteries back and reset.

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Calibration is recommended every 3 months or after replacing batteries. Even a small error of 0.3 kg distorts the calculation of muscle mass and water level in the body by 5-10%.

5. Customization of additional parameters: what scales Mi Scale 2 can do

In addition to basic weighting, the device supports 13 health metrics, including:

• 📊 Body mass index (BMI) — weight-to-weight ratio.
• 💪 Muscle mass – the percentage of muscles in the body.
• 💧 Water level – percentage of fluid in the body.
• 🦴 Bone mass – skeleton weight (important for the diagnosis of osteoporosis).
• 🧠 Visceral fat – fat around internal organs.

To enable the display of all parameters:

1. Open Zepp Life and go to Profile → Settings → Body parameters.
2. Activate sliders in front of the desired metrics.
3. For accuracy of measurements, weigh in the morning on an empty stomach, without shoes and thick socks.

Libra also supports pet weighing mode (if the model with an index) XMTZC05HM):

1. Enable the mode in the application settings.


2. Put the pet in a basket or on a towel on a scale.




3. The data will be stored in a separate tab "Petoms".

6. Solving common errors and failures

Even after you set the scales correctly, the Mi Scale 2 can still produce errors, and here are the most common ones and ways to fix them:

Err 1 or Err 2 Error

It appears when you're overloaded (over 150 kg) or if you're not evenly distributed (e.g., standing on the edge).

• Stand in the center of the platform.
• Check the maximum weight (for Mi Scale 2 - 150 kg).

Libra does not store data in the application

The problem is that there's no synchronization.

• 📶 Bluetooth is on on the phone.
• 📱 Zepp Life app has access to Bluetooth and Notifications (in settings) iOS/Android).
• 🔄 Update the firmware of the scales through Zepp Life → Devices → Update of the PO.

The indications are very different from mechanical weights.

If the difference is greater than 1 kg, do:

1. Calibration (see section 4).
2. Replace the batteries with new alkaline batteries.
3. Reset settings (hold the reset button for 15 seconds).

⚠️ Note: If after all the manipulations, the scales show knowingly incorrect data (for example, weight 30 kg at real 70 kg), this may indicate damage to the strain gauges. In this case, contact the Xiaomi service center - repair will cost less than buying a new weight.

7. Synchronize with other services: Apple Health, Google Fit, S Health

Data from Mi Scale 2 can be automatically transferred to third-party health apps, which is convenient if you use:

• 🍎 Apple Health (for iPhone owners).
• 🤖 Google Fit (for Android devices).
• 🩺 Samsung Health (for Samsung gadgets).

To adjust the synchronization:

1. Open Zepp Life and go to Profile → Settings → Accounts and Sync.
2. Select the right service and log in.
3. Allow access to data on weight, body composition and activity.

Please note:

• 🔄 Sync happens once every 24 hours, but you can manually run it by pulling the screen down from the main menu of Zepp Life.
• 📊 Not all parameters are shared with third-party services, such as Apple Health, which does not support bone mass data.
• 🔒 For privacy, you can disable the transfer of specific metrics (for example, weight) in synchronization settings.

If no data is transmitted:

• Check that the phone settings allow background mode for Zepp Life.
• Restart the app and phone.
• Disable and reconnect the account in Settings → Accounts.

8. Update firmware: why and how to do

Xiaomi regularly releases firmware updates for scales that:

• 🛠 Correct measurement errors (e.g. 0.5–1 kg error).
• 🆕 Add new metrics (e.g., metabolic age estimates).
• 🔒 Improve data protection during synchronization.

To update the firmware:

1. Make sure the scales are connected to the phone and are nearby.
2. Open Zepp Life and go to Profile → Devices → Mi Smart Scale 2 → Update of the PO.
3. If a new version is available, click Update and wait until it is completed (don’t step away from the scales!).

⚠️ Warning: Do not interrupt the upgrade process - this can lead to loss of sensor calibration or complete inoperability of the scales.If the update has hung for more than 10 minutes, remove the batteries, wait 30 seconds and try again.

After the update:

• The scales will automatically reset.
• Calibration data will be retained, but it is recommended to check the accuracy with the reference load.
• A request for reauthorization may appear in the application.

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The firmware updates for Mi Scale 2 come out every 3-6 months. If your version is older than 2023, make sure to update it - there was a critical error in the old versions with the calculation of visceral fat.

FAQ: Frequent questions about setting up Xiaomi Mi Scale 2