Xiaomi’s smart scales have become an integral part of a healthy lifestyle for millions of users. These compact devices don’t just show weight — they analyze body composition, sync with mobile apps and help track fitness progress. But many owners are faced with questions: how to properly connect the scales to the phone, what parameters are important to consider when weighing, and how to interpret the data received?
In this article, we will analyze all the nuances of working with Xiaomi smart scales - from the first setup to advanced body analysis functions. You will learn which models support advanced diagnostics (e.g., visceral fat index or muscle mass level), how to avoid typical weighing errors, and why the data may differ from mechanical weights. Fit/Zepp Life and Export Opportunities for Statistics.
Whether you’re a beginner or a seasoned user, here’s the answer to the most pressing questions — like how to lose weights to factory settings, why they don’t turn on, and whether you can use them without a smartphone. All the instructions are relevant for the 2020-2026 models, including the popular Mi Smart Scale 2, Xiaomi Body Composition Scale 2 and Mi Body Fat Scale.
1. Preparing Xiaomi scales for first use
Before you start, it's important to make sure the device is ready to go. Unpack the scales and check the completeness: the box should have the scale itself, 4 AAA batteries (sometimes included, sometimes bought separately) and a brief instruction. Pay attention to the sensors on the platform - they should be clean, without scratches or contamination.
Install the batteries in the compartment on the underside of the scales, observing the polarity (usually indicated on the lid of the compartment). Once the batteries are installed, the scales should automatically turn on, as indicated by the short-term flashing of the display or LED indicator. If this does not happen, check:
- 🔋 Properly Installed Batteries (Flip them and try again).
- 📦 Presence of protective film on battery contacts (it must be removed).
- 🔌 Condition of contacts in the compartment (if necessary, gently wipe them with a cotton swab).
If the scales are still unresponsive, try pushing the platform with your foot — sometimes the sensors only activate under load. Also make sure you use alkaline batteries (like Duracell or Energizer), as cheap salt cells may not provide enough power.
2. Connecting scales to a smartphone via Mi Fit/Zepp Life
Xiaomi uses two main applications: Mi Fit (for older models) and Zepp Life (for new ones, including Body Composition Scale 2). Download the current version from the App Store or Google Play and register (you can use Xiaomi, Google or Apple ID account).
Connection algorithm:
- Open the app and go to Profile → Devices → Add the device.
- Select the Libra category and the specific model (if your model is not listed, select the one that is closest to the specifications).
- Follow the instructions on the screen: the application will ask you to stand on the scale to activate the pairing mode.
- Wait for the data to appear on the scale screen (usually the weight and Bluetooth icon are displayed).
- Confirm the connection in the application – the scales will be added to your account.
If the scales are not connected:
- 🔄 Reset the scales (remove the batteries for 10 seconds and insert back in).
- 📱 Enable Bluetooth and Geolocation on your smartphone (both options are mandatory!).
- 🔗 Make sure the scales are not connected to another device (one scale can only be linked to one account).
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If the scales are connected but the data is not synchronized, check the Mi Fit/Zepp Life app permissions in your smartphone settings. Warehouse permissions (for data export) and Background activity (for automatic synchronization) are especially important.
3. Proper weighing: how to get accurate data
The accuracy of Xiaomi’s smart scales depends not only on the calibration of the device, but also on the weighing conditions.
- ⏰ Weigh yourself on an empty stomach in the morning (after waking up and going to the toilet) – this minimizes the effects of food and fluids.
- 👣 Stand on the scales with bare feet, evenly spreading the weight on both feet (do not lean on one leg!).
- 🧘 Before weighing, stand still for 2-3 minutes - this stabilizes blood circulation.
- 🚿 Do not weigh yourself immediately after showering or exercising (moisture on the skin distorts bioimpedance indicators).
To analyze body composition (fat, muscle, water percentage), Xiaomi scales use bioimpedance analysis (BIA) technology. Electrical pulses pass through the body, and the resistance of tissues is calculated parameters. Importantly, the accuracy of BIA depends on hydration - with dehydration, fat will be overestimated, and with excess water - underestimated.
If the scales show unstable data:
- 🔄 Recalibrate them: stand on the scales, wait for a stable value, then come down and stand up again.
- 📏 Make sure the scales are on a flat, hard surface (not on carpet or heated tiles).
- 🔋 Replace batteries - at low charge readings can "jump».
Why are smart scales different from mechanical scales?
Decoding indicators: what do the numbers on the screen mean
In addition to weight, Xiaomi smart scales display up to 13 parameters of body composition (depending on the model).
| Parameter | Normal for men | Norm for women | What affects the indicator |
|---|---|---|---|
| Body mass index (BMI) | 18.5–24.9 | 18.5–24.9 | Weight to height ratio. It doesn't take into account muscle mass. |
| Percentage of fat | 10–20% | 20–30% | Hydration level, physical activity, age |
| Muscle mass | 35-45% weight | 30-40% weight | Training, protein nutrition, hormonal background |
| visceral fat | 1–10 | 1–10 | Dangerous fat around organs: A score above 10 - risk of metabolic disease |
| Water level | 50–65% | 45–60% | The amount of liquid drunk, salty food, alcohol |
Pay attention to visceral fat, which is often ignored, although it is critical for health, a value above 10 indicates the risk of diabetes, cardiovascular disease and fatty hepatosis.
- 🥑 Increase the intake of unsaturated fats (avocados, nuts, fish).
- 🏃 Pay attention to cardio loads (running, cycling, swimming).
- 🍬 Eliminate fast carbohydrates (sugar, flour, sugary drinks).
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Xiaomi’s bone mass index is calculated using empirical formulas and can have an error of up to 15%. For accurate diagnosis (for example, in osteoporosis), densitometry is required in a medical center.
5. Set up profile and goals in the application
Once you have the scales, set up your personal profile in Mi Fit/Zepp Life, as your body composition calculations depend on it.
- 📏 Exact growth (with an accuracy of 0.5 cm).
- 👶 Age (important for adjusting fat and muscle norms).
- 🏋️♂️ Activity level (sedentary, moderate, active).
- 🎯 Purpose (weight loss, weight gain, maintenance of shape).
The app allows you to set weekly weight goals and track progress on graphs. For example, if you want to lose 5 kg in 2 months, the system will automatically calculate the recommended rate (about 0.3 kg per week) and remind you to weigh.
- 📅 Missed weighing (if you haven't stood on the scales 3 days in a row).
- 📈 Mini-multi achievements (e.g., “You have lost 1 kg!»).
- 💧 Drinking water (based on hydration level).
For more detailed analysis, integrate Mi Fit with other services:
- 🍎 Apple Health (Sync data from iPhone).
- 📊 Google Fit (for Android devices).
- 🏃 Strava or Nike Run Club (for weight correlation with workouts).
Install batteries.|Download and update Mi Fit/Zepp Life|Add scales to the annex|Set up a profile (growth, age, gender)|Weigh your bare feet on a flat surface-->
6. Common Problems and Their Solutions
Even reliable devices sometimes fail, and here are the typical problems and ways to fix them:
⚠️ Attention: If the scale shows a Lo or Err error, it means battery discharge or sensor failure. Try replacing the batteries with new ones (even if the old ones "seem to work"). If the error persists, contact the service center - it may be damaged bioimpedance board.
| Problem. | Possible cause | Decision |
|---|---|---|
| Libras not included | Batteries discharged, contacts oxidized | Replace batteries, wipe contacts with alcohol |
| Not connecting to the phone. | Bluetooth is off, scales are linked to another device | Turn on Bluetooth, reset the scales (hold the 5 sec button) |
| Indications "jump" | Uneven surface, wet feet | Put the scales on the tile, wipe your feet. |
| No data is stored. | No Internet, the app is not updated | Check the connection, update the Mi Fit |
If the scales are no longer synchronized with the application:
- Remove the device from Mi Fit (Profile → Devices → Delete).
- Reset the scales to factory settings (press and hold the 10 second reset button – it is usually located on the bottom panel).
- Reboot your smartphone.
- Repeat the connection procedure again.
⚠️ Note: Do not use Xiaomi scales with a pacemaker or other implanted medical devices. Electrical pulses of bioimpedance analysis may affect their performance.
7. Reset settings and update firmware
If the scales are not working properly (for example, showing clearly incorrect data or not responding to pressing), you may need to reset.
- Remove the batteries from the scales.
- Press and hold the on button (or touch button on the display) for 15 seconds.
- Put the batteries back in - the scales will be reset to the factory settings.
Update is automatically via the Mi Fit/Zepp Life app, but sometimes manual checks are required:
- Open the app and go to the section of your weights.
- Click on the three dots in the top right corner and select Device Settings.
- Slip on the firmware update and follow the instructions.
If the update is hanging:
- 🔄 Do not interrupt the process – wait until it is completed (may take up to 10 minutes).
- 📱 Make sure your smartphone is connected to stable Wi-Fi (not mobile internet).
- 🔋 The battery charge should be at least 50%.