Integrating smart home devices into the Apple ecosystem has long been a challenge, but with some gadgets, such as the Mi Body Composition Scale 2 or earlier, users still have difficulties. iPhone owners often face the need to use third-party apps to properly work the scales, since direct integration through the standard Health app is not provided by the manufacturer.
The right setup allows you to transfer your weight, fat percentage, muscle mass and other data directly to Apple Health, forming a unified picture of your physical condition. You do not have to manually enter numbers after each weighing. In this article, we will discuss all the nuances of pairing, choosing the right software and methods for solving typical connection errors that can occur in the process.
Before you start, make sure your Xiaomi Mi Smart Scale is in good working order and has fresh batteries installed. Also check that your iPhone is Bluetooth enabled and the internet is available for initial user profile downloads.Gate and smartphone preparation is a key step, ignoring which in 90% of cases leads to the inability to detect the device.
Selection of a weight management application
The first step is to install the software. The official application from the manufacturer is Mi Fitness (formerly known as Mi Fit), through which the initial calibration, creation of user profiles and deep adjustment of the scales takes place. However, for iOS owners, there is an important nuance: the Mi Fitness application does not always correctly transfer data to Apple’s system without the help of an intermediate link.
Full synchronization often requires an additional connector application such as GadgetBridge or the use of built-in sync features in iOS settings. Some users prefer alternative clients, such as Notify for Mi Band, which have advanced features with the Xiaomi peripherals. The choice of specific software depends on the weight model and the desired depth of analytics.
If you plan to use scales as a family, consider multiplayer support, the app should be able to automatically recognize the user by weight and distribute data to the corresponding profiles. Mi Fitness is the most stable feature, allowing you to create up to 16 separate profiles.
⚠️ Note: Do not try to connect scales directly through the standard Bluetooth menu in the iPhone settings. Xiaomi devices require authorization within the application, otherwise pairing will be impossible.
Step-by-step instructions for connecting
The pairing process begins with the preparation of the scales. Turn the device over and remove the protective insulation tape from the battery compartment, if it is installed there. Put the scales on a hard, flat surface - a carpet or soft coating can distort the readings and interfere with calibration. Press the metal panel on top to activate the Bluetooth module; the indicator at the bottom should start flashing.
Then open the Mi Fitness app on your iPhone. If you don't already have an account, you'll need to register with an email or phone number. After you log in, go to the Profile tab or click the + icon in the upper right corner of the home screen to add a new device. From the list of available gadgets, select your scale model, for example, Mi Body Composition Scale 2.
☑️ Checklist before connection
When the app detects the scales, a pairing request appears on the screen. Press "Plug" and wait for the process to end, which usually takes 10-15 seconds. At this time, do not move far from the scales and do not lock the smartphone screen. After a successful connection, the application will suggest adjusting the user's parameters: height, age and gender, which are necessary for calculating body composition.
It is important to enter anthropometric data correctly, because it depends on the accuracy of calculations of fat and muscle mass. Xiaomi algorithms use this data in conjunction with impedance analysis (tissue resistance to electric current) to derive the body formula, errors at this stage will lead to incorrect statistics in the future.
Sync with Apple Health
One of the main goals of iPhone owners is to concentrate all health data in one place. Apple Health is the central repository, but Xiaomi scales can't write data directly there without intermediaries.
Open the Health app on your iPhone and go to the Review section. In the upper right corner, click on the profile icon, then select Apps or Data Sources. Find Mi Fitness (or Zepp Life if you use it) in the list and click on it. Make sure the switches opposite the Weight, Body Mass Index and Fat Percentage categories are activated and lit in green.
| Parameter | Status at Mi Fitness | Status at Apple Health | Frequency of update |
|---|---|---|---|
| Weight. | Actively. | Reading/writing permitted | Instantly after weighing |
| BMI (BMI) | Actively. | Reading allowed | In synchronization |
| Percentage of fat | Actively. | Reading allowed | In synchronization |
| Muscle mass | Actively. | Not supported* | - |
Note that some specific metrics, such as water balance or body type, may not be transmitted to Apple Health due to Apple's API limitations. However, baseline metrics, such as weight and BMI, are synchronized consistently. If the data doesn't show up, try manually running sync in the Mi Fitness app by pulling the main screen down.
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To ensure synchronization, open the Mi Fitness app immediately after weighing while the scales are still active, which will ensure data transfer before the scales go into sleep mode.
Creating and managing user profiles
Xiaomi’s smart scales support multi-user experience, making them ideal for families. The system recognizes up to 16 different profiles, automatically determining who is on the platform, based on the current weight and history of previous weigh-ins. To work correctly, each user’s weight must be at least 3-5 kg different from other profiles.
To add a new user, open the app and go to Profile. Click Add Family Member and enter the data you need. It is important to note that for children under 18, the functionality may be limited: the scales will only show body weight, ignoring composition (fat, muscle, water), since bioimpedance analysis algorithms are not certified for growing organisms.
When using scales by different people, the initial weighing of each new profile is better done by holding the phone with the application running in your hands or being near it, which will help the system to “link” a particular weight to a particular account faster, and in the future the scales will automatically switch between users.
⚠️ Note: If two users are of the same weight (less than the difference) 1-2 If you are not aware of the weight, you may mistakenly write the data to the wrong person.
Measurement accuracy and calibration
The accuracy of readings depends not only on the electronics, but also on the operating conditions. Tenzos installed in the legs of the scales are sensitive to temperature and surface levelness. It is recommended to carry out the weighing at the same time of day, preferably on an empty stomach in the morning, after going to the toilet and before eating. This minimizes the errors caused by the contents of the gastrointestinal tract and swelling.
To ensure maximum accuracy, avoid sudden movements during measurements. Stand on the scales should be motionless, spreading the weight evenly on both legs. If you have moved the scales to another place (even a few centimeters), do one control weighing so that the device is recalibrated to the new surface, and only then make the main measurement.
Calibration also depends on the battery charge. At low charge levels, the measurement error can increase. Use high-quality alkaline batteries, avoiding cheap ones that can quickly discharge under the load of a Bluetooth module. Replacing the entire battery set at once (without mixing old and new) will prolong the life of the device.
Why do scales show different weights on carpet and tile?
Solving Connection Problems and Errors
Despite the ease of setting, users may encounter a number of difficulties. The most common problem is that the scales are not searchable. In this case, make sure that the previous user does not freeze on the device. Click on the metal pad to wake them up, and wait until zeros or current weight appear on the display before you start searching in the application.
Another common situation is that the data is not synced with the iPhone. Check the privacy settings on iOS itself. Go to Settings → Privacy → Health and make sure that the Mi Fitness app is allowed access to all categories of data. Sometimes it helps to remove the application and install it again with a complete reset of the permissions.
If the scales stop turning on or flash with an error indicator (usually an "ERR" or "Lo"), check the contacts of the batteries. Contact oxidation is a common problem. Wipe them with dry cloth or eraser. Also make sure the batteries are inserted correctly, observing polarity.
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Most connectivity problems are solved by completely removing the device from the app, pulling out the batteries for 1 minute, and re-pairing from scratch.