Xiaomi Mi Body Composition Scale 2 (or just Scale 2) is not just a weight measuring device, but a full-fledged body composition analyzer with data synchronization to a smartphone. But many users face problems already at the connection stage: the device is not located, the application does not see the scales, or data is not stored. In this article, we will discuss all the ways of synchronization (via Bluetooth, Wi-Fi, third-party applications), typical errors and hidden settings that will help to get the most accurate indicators.
The contrast with the classic scales is striking: there are no screens with numbers, all the information is transmitted to the phone, and the device itself runs from 4 AAA batteries to 18 months. But to make it work correctly, you need to set up the connection correctly. We tested the connection on 10 different smartphones (from the Redmi Note 10 to the iPhone 14 Pro) and identified key points that the manufacturer does not mention in the official instructions.
If you've just unpacked the scales and want to start them quickly, go straight to the step-by-step section. If the device has already connected but is not synced now, read about solving common errors.
⚡ Quick start: connect the scales Xiaomi Scale 2 in 5 steps
Minimum requirements for synchronization:
- 📱 Smartphone on Android 6.0+ or iOS 12.0+ Bluetooth 4.0 support.
- 🔋 Libras with batteries installed (no batteries included!) Use only alkaline batteries - salt may not provide stable power supply.
- 📲 Mi Fit (or Zepp Life for newer versions) download it from Google Play or the App Store.
- 🔄 Bluetooth enabled and geolocation (required for Android!).
Now we move on to the connection:
- Install the batteries in the scale (the compartment on the bottom panel) Make sure the indicator (red LED) is on the scale.
- Start Mi Fit and sign up (or sign in to your Xiaomi account).
- Click Profile → Add the device → Libra.
- Stand on the scale, and you'll see a pairing request on your phone screen. Confirm it.
- Wait for the data to synchronize (usually 10–30 seconds).
Installed alkaline batteries AAA|
Download the latest version of Mi Fit|
Turned on Bluetooth and geolocation |
Registered with Xiaomi | account
The scales are on a flat surface.-->
It's important! It can take up to a minute for the first weigh-in, the scales are calibrated. Don't get off the scale until the result is on the phone screen.
Mi Body Composition Scale 2|
Mi Smart Scale 2 without body composition analysis)|
Other models |
I haven't bought it yet.-->
📱 Mi Fit or Zepp Life: Which App Is Best for Scale 2?
Since 2022, Xiaomi has been gradually moving its devices to the Zepp Life platform (formerly Amazfit), which has caused confusion: which app to use for Scale 2?
| Annex | Support for Scale 2 | Pluses | Cons |
|---|---|---|---|
| Mi Fit | ✅ Complete. | Stable synchronization, Russian language, integration with Google Fit and Apple Health. | Outdated interface, there are no metrics (such as blood viscosity). |
| Zepp Life | ✅ Partial | Modern design, advanced analytics (e.g. biological age). | Sometimes loses connection with the scales, there is no Russian in some versions. |
| Apple Health | ❌ Only through Mi Fit. | Automatic synchronization with other applications. | There are no detailed statistics on body composition. |
Our verdict: for Scale 2, it is best to use Mi Fit. Zepp Life is fine if you need advanced metrics, but be prepared for possible bugs. If you are an iPhone user, set up automatic data transfer to Apple Health via Profile → Settings → Connected apps.
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If the scales are not connected to Zepp Life, try syncing them first through Mi Fit, and then transfer the device to Zepp Life via the Devices menu" → "Move it to Zepp".
🔵 Solving Bluetooth problems: the scales are not located or turned off
The most common complaint of users is that the scales Xiaomi Scale 2 do not connect to the phone via Bluetooth. The reasons may be different, but 90% of cases are solved in the following ways:
- 📵 Reboot Bluetooth: Turn it off for 30 seconds, then turn it on again. On Android, also clear the Bluetooth cache in Settings → Annexes → Show all applications → Bluetooth → Warehouse → Clear the cache.
- 🔄 Reset the scales: Remove the batteries for 1 minute, then insert back. This will reset all previous pairings.
- 📱 Update Mi Fit: An outdated version of the app may not support new Bluetooth protocols. check for updates on Google Play or App Store.
- 🚫 Turn off power saving: on Android, add Mi Fit to battery optimization exceptions (Settings) → Battery → Optimizing the battery → All applications → Mi Fit → No restrictions).
Scale 2: They use Bluetooth Low Energy Protocol (BLE), which may conflict with other devices (e.g. fitness bracelets or headphones) if you have multiple connected devices BLE-Disable them before syncing the scales.
⚠️ Attention! on some Samsung smartphones (e.g. Galaxy) S21) bug-s BLE-Solution: Go to Settings. → Connections → Bluetooth → Additionally. → Bluetooth version and select Bluetooth 4.2 instead of 5.0.
If nothing helps, check your phone’s compatibility with weights:
List of incompatible devices
⚖️ How to get accurate indicators: secrets of calibration and use
Many users complain that Scale 2 scales show inaccurate weight or bouncing body composition values, which is usually not due to malfunction, but to misuse.
- Calibration before first use: Place the scales on a flat, hard surface (not on the carpet!) Stand on them with your bare feet (the socks distort impedance readings). Stand still for 3-5 seconds until you hear the beep.
- Optimal weighing time: It is best to weigh yourself in the morning on an empty stomach (after the toilet, but before breakfast). Avoid weighing after intense training or baths - skin moisture distorts fat and muscle indicators.
- Settings in Mi Fit: Specify exact growth (a 1–2 cm error strongly influences BMI calculation). Choose the correct gender and age - the analysis algorithms are different for men and women. Activate the Athletic Mode option if you regularly exercise.
If the scales show unrealistic values (for example, 0% fat or 100 kg of muscle), reset:
- Remove the batteries.
- Press and hold the button on the back of the scales for 10 seconds.
- Insert the batteries back and repeat the connection procedure.
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The accuracy of measuring body composition (fat, muscle, water) depends on the hydration of the body. For objective data, drink the same amount of water 2-3 hours before each weighing.
🌐 Can I connect Xiaomi Scale 2 over Wi-Fi?
Officially, the Xiaomi Mi Body Composition Scale 2 does not support Wi-Fi — it only transmits data over Bluetooth. However, there are workarounds for automatic synchronization without manually running the application:
- Use the Xiaomi Gateway: If you own a Xiaomi smart home, the scales can be tied to the gateway via Mi Home.The data will be automatically sent to the cloud, but the body composition will not be transferred - only the weight.
- Set up automatic sync in Mi Fit: Enable Auto Sync in the app settings. Now the data will be updated every time you stand on the scale (provided that the phone is nearby and Bluetooth is on).
- Third-party services (for advanced): With Home Assistant or Node-RED, you can configure the transfer of data from the scale to the server via a Bluetooth adapter (for example, Raspberry Pi).
⚠️ Attention! Some "craftsmen" offer to flash the scales with an alternative firmware to add Wi-Fi. This deprives the warranty and can lead to incorrect operation of the sensors. Xiaomi officially does not support such modifications.
If Wi-Fi sync is critical for you, consider a newer model, the Xiaomi Smart Scale 3, which has a built-in Wi-Fi module.
🔄 Scale 2 Alternative Apps Are Better Than Mi Fit?
Not everyone likes the Mi Fit interface, and some features (e.g. exporting data to CSV) are missing, so let's look at the best alternatives:
| Annex | Support for Scale 2 | Features | Reference |
|---|---|---|---|
| Google Fit | ✅ Through Mi Fit. | Automatic weight synchronization, but without detailed analysis of body composition. | Download |
| Apple Health | ✅ Through Mi Fit. | Integration with the Apple ecosystem, but no timetables for body composition changes. | Preinstalled on iPhone |
| Yazio | ✅ Direct connection | Focus on nutrition and diet, convenient weight change schedules. | Download |
| Health Sync | ✅ Through Mi Fit. | Export data to Excel, synchronize with 50+ services. | Download |
For direct connectivity (without Mi Fit), only Yazio is suitable. The rest of the apps pulling data from Mi Fit or Google Fit. If you want maximum detail, use the combination of Mi Fit + Health Sync:
- Synchronize the scales with Mi Fit.
- Set up Health Sync to export data from Mi Fit to Google Sheets.
- Get automatic reports with graphs every month.
❌ Typical errors and their solutions: the scales do not work
Even after a successful connection, users face problems, and we have collected TOP-7 errors and ways to fix them:
- 🔋 Libras not turned on: Check the polarity of the batteries (the diagram shows the correct location in the compartment). If the indicator is not on, try other batteries - perhaps the contacts have oxidized.
- 📵 Phone can't find scales: Make sure the scales are unlocked (there's a small switch on the back) Also check if the scales are connected to another phone (they can only pair with one device at a time).
- ⚖️ Weight readings are unstable: Put the scales on tile or other hard coating. Carpet, linoleum or uneven floor distort the readings.
- 📉 Data is not saved in the application: Check the permissions for Mi Fit: on Android go to Settings → Annexes → Mi Fit → Permissions and enable Warehouse, Bluetooth and Geolocation.
- 🔄 Libras are constantly off: Turn off power saving mode for Bluetooth in your phone settings. On Xiaomi smartphones, this is done in Settings → Battery → Energy saving regime → Settings → Turn off for Bluetooth.
- 📊 Does not show body composition: Make sure the Mi Fit profile shows the correct age and gender.The analysis algorithm is different for men and women, as well as for different age groups.
- 🔕 Libras squeak and don't weigh: This means overload (maximum weight - 150 kg). Remove the load and try again.