Integrating smart scales into the Apple Health ecosystem is the first step to fully controlling your health, allowing you to see the dynamics of change in one place. iPhone owners often face the need to combine data on weight, percentage of fat and muscle mass with the readings of fitness trackers. The process of initial tuning Xiaomi Mi Body Composition Scale 2 or newer models can seem confusing due to the peculiarities of the Bluetooth protocol in iOS.
The key here is to get the right sequence of steps when you first turn on and select an intermediary app. The standard Health app on the iPhone can't communicate directly with scales without third-party software, so installing Zepp Life (formerly Mi Fit) or Mi Home is a must. Ignoring this step will lead to the fact that the device simply does not identify in the list of available gadgets.
In this article, we will take a closer look at the pairing algorithm, explain the hidden privacy settings of iOS, and help you eliminate typical connection errors, learn why scales can’t see a phone, and how to get them to transfer data stably without losing weighting history.
Preparing iPhone and Libra for the First Connection
Before starting the synchronization procedure, you need to make sure that your iPhone is fully ready for working with peripherals. First of all, check the operating system version: for the correct operation of modern applications from Xiaomi, iOS version 12.0 or higher is required, although for stability it is better to use current releases. Go to the Bluetooth settings and make sure that the wireless module is active, since the scales use this channel for data transfer, not Wi-Fi.
The scales themselves also require pre-training. If you've just unpacked the Mi Smart Scale 2, remove the insulation tape from the battery compartment. It's important to use quality alkaline batteries, as lithium analogs can give off the wrong voltage, which will lead to calibration errors. Put the device on a hard, flat surface - carpet or soft coating will distort the readings and can interfere with the pairing process.
Special attention should be paid to access rights. When installing the application, it will request permission to use geolocation and Bluetooth. On iOS 13 and later, permission to use Bluetooth is critical for detecting weights in the background. Without this item, the device search menu in the application will be empty, and you will not be able to complete the setup.
☑️ Checking before synchronization
There is a common misconception that scales should be turned on and placed on immediately, and in fact, the initial activation occurs inside the application, not by clicking on the platform, which ensures that the unique device identifier is correctly registered in your account database.
Choosing the right app: Zepp Life or Mi Home
Users of the Xiaomi ecosystem often wonder which app to use to manage weights. For a long time, the de facto standard was the Mi Fit app, which was later renamed Zepp Life. It is this program that is sharpened for wearable devices and provides the most detailed statistics on body composition, including 13 health parameters.
Mi Home also supports some weight models, but its functionality in the context of health analytics is often stripped down, it is more focused on smart home management, automation scenarios and integration with other gadgets. If your goal is to analyze BJUs (proteins, fats, carbohydrates) and synchronize with Apple Health, Zepp Life remains the leader.
- 📱 Zepp Life: Best choice for detailed body analytics, support for family members profiles and sync with Mi Band trackers.
- 🏠 Mi Home: Suitable if scales are part of a complex smart home system and scenarios are needed (e.g. turning on lights when weighing in).
- 🍏 Apple Health: Not a weight management app, but a data aggregator where Zepp Life information flows.
It is important to note that using both applications at the same scales can lead to data conflicts. Libras can stop syncing if the previous application is not untied from the device.
What if the account has already been linked to another account?
Step-by-step instructions for pairing devices
The process of connecting scales to iPhone requires care, because the device detection window is limited in time. Once the scales are turned on, they go into search mode for a short period of time. Open the Zepp Life app and log in using your Mi Account, Apple ID or Google account.
In the app's main menu, click on the Profile button in the lower right corner, then select Add Device. In the list of available gadgets, find the Libra category and select your model, such as the Mi Body Composition Scale 2. The app will ask you to enable Bluetooth and geolocation if you haven't already done so.
Path to menu: Profile -> Add device -> Libra -> Mi Body Composition Scale 2Now, stand with one foot on the scale to activate it. The scale screen should light up, and the iPhone screen should have a pop-up asking you to plug in the device. Press "Plug in" and wait for the calibration to be completed. At that point, the encryption keys will be exchanged.
Once successfully paired, the app will suggest that you enter anthropometric data: height, age and gender, which are critical to body composition algorithms, without which the scales will only show total weight, and data on fat percentage and muscle mass will be unavailable or incorrect.
Sync with Apple Health
One of the main goals of iPhone owners is to centralize all health data, and in order for Xiaomi scales to transmit readings to the native Health app, you need to configure a bridge between Zepp Life and the iOS system, and this is done through the internal settings of the intermediary app.
Open Zepp Life, go to Profile, and find Add Accounts or Third-Party Accounts. From the list, select Apple Health. The system will redirect you to the system privacy settings, where you will need to allow the app to read and write data. Make sure the sliders opposite Weight and Fat Percentage are green.
| Parameter | Zepp Life | Apple Health | Status |
|---|---|---|---|
| Weight (kg) | Recording. | Reading/Recording | Actively. |
| Fat mass (%) | Recording. | Reading/Recording | Actively. |
| Muscle mass | Recording. | Reading | Actively. |
| Main exchange | Recording. | Reading | Actively. |
From now on, every weigh-in will automatically be duplicated in Health. However, it's worth considering that Apple Health can aggregate data with a delay. If you're on the scale, but the data didn't show up in Health right away, try just opening the Zepp Life app for forced synchronization.
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If the data isn’t synced, try Apple Health’s Privacy settings to temporarily deny Zepp Life access to weight, then allow it again.This often restarts the sync service.
Solving Connection and Visibility Problems
Despite the simplicity of the procedure, iOS users often face a situation where the scales are not on the device list.This can be due to Bluetooth cache or system security restrictions. If the search for devices does not give results, try rebooting your iPhone - this resets Bluetooth services without losing data.
Another common cause is low battery charge, and when the voltage is below a certain threshold, the scales go into economical mode and stop broadcasting the detection signal, and replace the batteries with new ones, even if the old ones seem to work on other devices.
⚠️ Note: Do not try to connect scales through the standard Bluetooth menu in the iPhone settings. The pairing must occur strictly inside the Zepp Life or Mi Home app. Direct connection in the system will not allow the transfer of data about body composition.
It's also worth checking if the app is blocked from the LAN. In iOS 14 and higher, Zepp Life may ask permission to search for devices on the LAN when it first starts. If you accidentally click "Disable", the scales will not be found. You can fix this in the iPhone settings: find Zepp Life in the application list and turn on the Local Network switch.
- 🔋 Check the polarity of the battery installation (often users confuse plus and minus).
- 📡 Make sure there are no powerful sources of interference (routers, microwaves) nearby).
- 🔄 Remove the device from the app and try adding it again.
Use of weights by several family members
Xiaomi’s smart scales support up to 16 user profiles, making them ideal for the whole family, and each family member must have an account in the app or use the Guest Mode feature within the same account to work properly.
When you first weigh the scales, they remember the weight of the user and tie it to the profile. Then, when you stand on the platform, the scales automatically determine whose weight it is and send the data to the appropriate profile. The accuracy of the determination depends on the difference in weight between users - it must be at least 3 kg.
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For a family of several people, it is better to create separate Mi Accounts and invite family members to the Family through the Zepp Life app, which will ensure complete privacy for each user.
If the scales cannot identify the user (for example, the weight has changed significantly or a new person has risen), the data will be recorded as "Guest", in which case you need to manually select in the application which profile belongs to the measurement, so that the statistics are not lost.
⚠️ Note: Data from children under 8 years of age or weighing less than 10 kg may not be correctly calculated due to the features of bioimpedance analysis. For young children, use scales only to control total weight, ignoring the percentage of fat.