Synchronizing Xiaomi Smart Watches with Phone: From Connection to Error Solving

Why it’s important to sync your smartwatch with your phone

Xiaomi smartwatches are not just accessories, but a full-fledged assistant for tracking health, managing notifications and even paying for purchases. However, without proper synchronization with the phone, most of the functions will remain unavailable. Many users face problems already at the connection stage: the clock is not determined by the phone, the application gives an error, or the data stops updating after a few days.

In this article, we’ll look at all the synchronization methods, from standard Mi Fitness connectivity (for older models) to the new Zepp Life app (for Mi Band 7/8, Watch 2 Pro, etc.), and how to set up notifications, update firmware, and what to do if the watch suddenly goes off. Particular attention will be paid to the Xiaomi Watch S3 model, which is nuanced because of eSIM support.

What Xiaomi smartwatch models support synchronization

Not all Xiaomi smartwatches connect the same way. The way you sync depends on the device model and firmware version. Below is the current list of devices and compatible applications (data for 2026):

If your model is not listed in the table, check the official Xiaomi website or the instructions in the box.For example, Mi Band 2 and older devices may not support modern versions of Android/iOS.

⚠️ Note: Watch Xiaomi Watch Color 2 and Watch S1 Active does not sync with iPhone via Zepp Life – requires a separate application Xiaomi Wear Lite with stripped down functionality.

Preparing the phone and clock for synchronization

Before connecting, make sure your phone meets the minimum requirements:

• 📱 Android 6.0 or later (for Zepp Life) / iOS 10.0+ (limited support).
• 🔋 Charge of at least 50% – at low battery level, synchronization may be interrupted.
• 📶 Bluetooth 4.2 enabled+ (on the phone) and permission for geodata (for some functions).
• 🚫 Turn off power saving mode for Zepp app Life/Mi Fitness in the phone settings.

Also check if the watch is connected to another device. If so, reset it to factory settings via Settings → System → Reset (on the watch itself).

Install the latest version of Zepp Life/Mi Fitness|

Turn on Bluetooth and geolocation on your phone |

Charge your watch to at least 50% |

Turn off the watch from other devices (if connected) |

Check the compatibility of the watch model with your phone-->

Step-by-step: how to synchronize the clock with the phone

Consider the universal algorithm for most Xiaomi models (such as the Mi Band 8 and Xiaomi Watch S3). If you have a different model, the steps may differ slightly.

Step 1: Installation of the application

Download the official application depending on the model:

• 📱 For the Mi Band. 3-8, Xiaomi Watch (except for the Xiaomi Watch) S3) → Zepp Life (Android) / App Store (iOS).
• 📱 For the Xiaomi Watch S3 → Install Xiaomi Wear (only for Android).

Step 2: Registration of an account

Launch the app and:

1. Choose your country (or your country).
2. Register with Mi Account, Google, Apple ID or phone number.
3. Confirm email/phone (required to synchronize data to the cloud).

Step 3: Connecting the clock

The algorithm for Zepp Life:

1. Click + Add the device in the upper right corner.
2. Select your model from the list (e.g. Mi Smart Band 8).
3. Allow access to notifications, contacts and geodata (without this, calls and tracking will not work).
4. Wait for the watch to appear in the list of available devices, and confirm the connection on the bracelet itself (press the button or tap the screen).

For the Xiaomi Watch S3, additionally:

1. Open Xiaomi Wear and do the binding through Add Device → Wrist Watch.
2. Activate eSIM (if you plan to use calls without a phone) through the Mobile Network menu in the clock settings.

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If the clock is not there, reboot the Bluetooth on your phone (turn off/on) and restart the app. Sometimes it helps to reset the network on the clock (Settings → System → Reboot).

Step 4: Set up notifications and synchronize data

After connection:

• 🔔 Include notifications for applications (WhatsApp, Telegram, calls) in the Profile → Notifications.
• 📊 Continuous monitoring of heart rate and SpO₂ profile → Health monitoring.
• ☁️ Enable autosynchronization with the cloud (for data backup).

⚠️ Note: On iPhone, notifications from third-party messengers (Viber, Slack) may not come to the clock due to the limitations of iOS. SMS call.

Solving synchronization problems

If the clock is connected but the data is not updated or the connection is constantly broken, check the following points:

If nothing helps, do a full reset of the clock:

1. On the clock: Settings → System → Reset to factory.
2. In the appendix: Profile → Device → Delete.
3. Reboot the phone and reconnect.

How to update the firmware of the watch through the phone

Regular firmware updates fix synchronization errors and add new features to update the clock:

1. Open Zepp Life and go to Profile → My Device → Software Update.
2. If a new version is available, click Download (Wi-Fi is required for large files).
3. Wait until the download and installation is complete. Don't disconnect the watch from your phone during the process!
4. After the update, the clock will reset automatically.

For the Xiaomi Watch S3, updates come in two stages: first the basic firmware, then the eSIM module (if used).

⚠️ Note: If the watch is turned off or the battery is dead during the upgrade, it may stop turning on. In this case, a forced firmware via the PC is required (instructions on the forum) 4PDA).

Sleep tracking |

Notifications of calls/messages|

Heart rate monitoring |

Managing music |

Payment through NFC|-->

Additional settings after synchronization

To unlock the full potential of the watch, set up:

1. Personalization of the dial

Zepp Life has over 100 dials, including animated ones, to set:

1. Open Profile. → Dials.
2. Choose your favorite design and click Install.
3. Some dials support widgets (weather, steps, pulse) – adjust them through Additional.

2. Set up quick action

For example, Mi Band 8 can be assigned to:

• 🎵 Music management (switching tracks from the clock).
• 🔦 Lantern (double pressing of the screen).
• 🏃 Quick start of workout (clip the screen for 2 seconds).

Set up in Profile → Quick action.

3. Activation of NFC and Contactless Payments

For Xiaomi Watch S3 and Mi Band 7 Pro, payments via Mi Pay (only for Russia and China) are available.

1. Add a bank card to Mi Pay (the app must be installed on the phone).
2. In Zepp Life, go to Profile → Contactless payments.
3. Follow the instructions for linking the card to the clock.

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Contactless payments via Xiaomi Watch S3 require an Android phone with Mi Pay support. On iPhone, this feature is not available.

FAQ: Frequent questions about synchronization