Xiaomi Mi Body Composition Scale 2 or Xiaomi Smart Scale 2 have become a popular gadget for weight and body composition control. But many users face difficulties when trying to use the device together — data is confused, profiles are not saved, and synchronization with the Mi Fit application is malfunctioning. In fact, the scale supports up to 16 users, but to work correctly you need to set up profiles and understand the principles of identification.
In this article, we will take a step-by-step guide to adjusting the scales for two people, explain how the device distinguishes users, and reveal nuances that the manufacturer does not always mention in the official documentation. You will learn what errors lead to failures in determining the profile, how to fix data conflicts and why the scales sometimes “forget” the user.
If you've just bought a scale and you want to customize it for family or partner sharing, this guide will help you avoid typical problems, and if you've already had problems, there's a section at the end of this article that addresses the most common mistakes.
1. How Xiaomi scales define the user: the principle of operation
Before you set up a scale for two, it is important to understand how the device identifies different people. Unlike mechanical scales, Xiaomi smart models use a combination of three parameters:
1. Body weight is the main criterion. When you first weigh the scales remember your weight as "base" for the profile. ±3 kg can be perceived as another user.
2. Bioimpedance resistance - analyzed when measuring body composition (percentage of fat, muscle, water) This parameter is unique to each person and helps the scales distinguish users with similar weights.
3.Last weighing time – if two people weigh in a row at intervals of less than 5 minutes, the scales may mistakenly attribute the data to the same profile.
Interesting fact: if you weigh yourself in socks or barefoot, the resistance of the bioimpedance changes, and the scales can perceive this as another user, the same thing happens when you change your weight dramatically (for example, after a copious meal or a sports workout).
⚠️ Note: If both users are of the same weight (e.g. 70 kg) and similar body composition, the scales will confuse profiles.In this case, it is recommended to weigh at intervals of at least 10 minutes or use manual profile selection in the Mi Fit app.
Also, consider that the Xiaomi Mi Body Composition Scale 2 does not have a built-in profile display – all identification is automatic.
2. Step-by-step setup of Xiaomi scales for two users
To correctly recognize the two users, you need to correctly configure the profiles in the Mi Fit application.
1. Install the Mi Fit app on your smartphone (available for Android and iOS) from official stores:
- [Google Play](https://play.google.com/store/apps/details?id=com.xiaomi.hm.health)
- [App Store](https://apps.apple.com/ru/app/mi-fit/id955555696)
2. Create a basic profile:
Open Mi Fit and sign up (or sign in via your Xiaomi account).
- Go to the Profile section → Devices → Add the device.
Select the scale model (Mi Body Composition Scale 2 or similar) and follow the connection instructions.
3. Add a second user:
- In the main menu of the application, tap on the scale icon.
- Select User Management → Add a user.
Enter the second person’s data (gender, age, height, target weight).
Important: Specify the real parameters - the accuracy of the measurement of body composition depends on this.
4. Synchronize the scales:
The scale will automatically create a new profile if the weight differs from the first user by more than 3 kg.
If the weight is similar, manually select a profile in the Mi Fit app after weighing.
Download and install Mi Fit|Create a core profile|Add a second user manually|Check the synchronization of data after the first weighing-->
If the scales don’t recognize the second user, try restarting the device (remove and insert batteries) or updating the firmware through Mi Fit.
3. Common mistakes and how to avoid them
Even with the right setup, users often face problems, and here are the most common errors and solutions:
1.Libra confuses users with similar weight
🔹 Reason: Weight difference less than 3 kg or similar body composition.
🔹 Decision:
- Weigh yourself at intervals of 10+ minute.
Manually select a profile in Mi Fit after weighing.
Add different heights to your profiles (even if the actual height is the same).
2. Data is not stored or disappears
🔹 Reason: No Internet connection or synchronization failure.
🔹 Decision:
Check that the smartphone is enabled Bluetooth and the Internet.
Update the Mi Fit app to the latest version.
Reconnect the scales in the device settings.
3.The scale shows an error "Unknown user"
🔹 Reason: Weight is very different from what is stored in the profile (for example, after holidays).
🔹 Decision:
Update the target weight in the profile.
- Delete and add the profile again.
⚠️ Note: If you use Xiaomi Mi Smart Scale 2 scales (without body composition analysis), user identification only works by weight. In this case, the risk of errors is higher - it is recommended to weigh in turn at a long interval.
Another common problem is data conflict when using multiple smartphones, if both users sync scales with their phones, there may be duplication of records, and to avoid this, set up a shared Xiaomi account or use one smartphone to sync.
4. Alternative ways of using weights by two
If the standard identification method is not suitable (for example, because of the same weight), alternatives may be used:
1. Manual profile selection in Mi Fit
After each weighing:
- Open the Mi Fit app.
Go to the weights section and select the Last Weighing.
Click Change User and specify the correct profile.
2.Using different Xiaomi accounts
Create two separate Xiaomi accounts and connect the scales to each one in turn, and the downside is that the data will be separated into different accounts.
3. Binding to different smartphones
If each user has a phone number:
Connect the scales to the first smartphone and create a profile.
- Untie the scales (Settings) → Remove the device).
Connect to the second smartphone and reset.
4. Use of third-party applications
Some apps, such as Google Fit or Apple Health, can import data from Mi Fit and share it by user.
- In Mi Fit go to Profile → Settings → Connected applications.
Select a synchronization service and set up data export.
| Method of using | Pluses | Cons |
|---|---|---|
| Standard identification | Simplicity, no additional actions | Mistakes at similar weight |
| Manual profile selection | Accuracy, suitable for close by weight | Requires action after each weighing |
| Different Xiaomi accounts | Clear separation of data | We need to reconnect the scales. |
| Third-party annexes | Additional data analysis | Possible synchronization errors |
💡
If the scales are confusing users, try weighing yourself at the same time of day, which will help the algorithm better recognize profiles.
5 How to analyze data of two users in Mi Fit
After you have set up profiles, it is important to learn how to interpret the data correctly. In the Mi Fit app, the statistics for each user are displayed separately.
1. Viewing the history of weighings
Go to the weights section and select the user profile.
- Weight change schedule.
Body composition dynamics (if supported by the model)
- Week/month averages.
Comparison of indicators
To compare the progress of the two users:
- Export data to Google Tables through Settings → Export of data.
Use the Compare feature in the premium version of Mi Fit (available by subscription).
3. Set up notifications
You can include goal achievement alerts for each user separately:
- Profile → Settings → Notifications → Libra.
Select which events you need notifications for (e.g., “target weight achieved”).
4.Integration with other Xiaomi devices
If you have a Mi Band or other Xiaomi gadgets, the scale data will automatically correlate with the user's activity, for example, if one of the users is engaged in sports, the app will show how this affects body composition.
⚠️ Note: When analyzing body composition (percentage of fat, muscle), keep in mind that the accuracy of the measurements depends on the body's hydration. If one of the users drank a lot of water before weighing, the indicators may be distorted.
For more detailed analysis, it is recommended to use a bioimpedance-enabled scale (e.g., Xiaomi Mi Body Composition Scale 2), as they provide advanced statistics, including:
- Body mass index (BMI).
- Percentage of visceral fat.
- Muscle mass level.
- Bone mass and water balance.
6. Problem Solving: Scales do not recognize the second user
If the scales stubbornly do not want to recognize the second user, try the following steps:
1.Dump the scales to factory settings
For this:
- Take the batteries out for 10 seconds.
- Put it back in and wait for it to turn on.
- Reconnect the scales to Mi Fit.
2. Update the firmware of the scales
Outdated software may cause identification failures to update:
- Open Mi Fit and go to Profile → Devices → Libra → Update of the PO.
If an update is available, follow the instructions on the screen.
3. Check the compatibility of the model
Not all Xiaomi scales support multiple users. Make sure your model is on the list:
Mi Body Composition Scale 2 – Up to 16 users
Mi Smart Scale 2 – up to 10 users
Mi Scale (first version) – only 1 user
4.Reinstall the Mi Fit app
Sometimes errors are caused by malfunctions in the program: delete Mi Fit, restart the smartphone and install the application again.
5.Contact Xiaomi support
If nothing helps, contact the support team:
- Official website: [https://www.mi.com/global/support](https://www.mi.com/global/support)
- E-mail: support@xiaomi.com
What to do if the scale shows an error "E8"
7. Xiaomi weights comparison for sharing
If you haven’t bought a scale yet and are choosing a model for two, note the key differences:
| Model | Number of users | Analysis of body composition | precision | Price (exemplary) |
|---|---|---|---|---|
| Xiaomi Mi Body Composition Scale 2 | 16 | Yeah (fat, muscle, water) | ± 100 g | 2 500 — 3 000 ₽ |
| Xiaomi Mi Smart Scale 2 | 10 | No. | ± 100 g | 1 500 — 2 000 ₽ |
| Xiaomi Mi Scale (1st version) | 1 | No. | ± 100 g | 1 000 — 1 500 ₽ |
| Xiaomi Smart Scale 3 | 16 | Yes (extended analysis) | ±50 g | 3 500 — 4 000 ₽ |
For sharing, it is better to choose models with support for bioimpedance (Mi Body Composition Scale 2 or Smart Scale 3), as they more accurately recognize users through analysis of body composition.
If you have a budget, the Mi Smart Scale 2 is suitable for basic weight control, but be prepared to manually adjust your profiles for similar settings.
💡
For maximum accuracy, choose scales with body composition analysis - they are less confusing for users due to additional sensors.