Step-by-step connection of smart watch Haylou LS02 to the smartphone: from A to Z

Xiaomi’s Haylou LS02 smartwatch combines stylish design, 14 sports modes and 10-day autonomy — but to unlock its potential, you first need to connect the gadget to your smartphone correctly. Many users face problems at the synchronization stage: the app does not see the watch, the connection is cut off, or the data is not updated. In this article, we will analyze all official and alternative ways of connecting, including nuances for Android and iOS, and also give a checklist for troubleshooting.

The Haylou LS02 features two communication protocols: Bluetooth 5.0 and Haylou’s proprietary protocol, which means that it will require not only standard pairing through phone settings, but also the installation of a proprietary app to work properly. We tested the process on 5 different smartphones (including the Xiaomi Redmi Note 12 and iPhone 14) and found that the connection stability is critically dependent on the watch firmware version — update it before setting up.

1.Preparation for connection: what to do before synchronization

Before you start pairing, make sure that the basic conditions are met, and neglecting them is the cause of 70% of connection errors.

• 📱 Smartphone compatibility: Haylou LS02 working with Android 5.0+ iOS 9.0+. On iPhone, some features (such as call notifications) may be limited.
• 🔋 Battery charge: the charge level of the watch should be at least 30.
• 📲 Free space: the smartphone must have a minimum of 100 MB of free memory to install the application and cache data.
• 🌐 Internet connection: downloading the Haylou Fun app and updating the watch firmware will require stable Wi-Fi or mobile Internet.

If you are updating the watch firmware for the first time, keep in mind that it can take up to 20 minutes, and the watch cannot be turned off from charging until it is finished, otherwise you risk getting a brick, a device with damaged firmware.

Charge the watch to 50% |

Remove old versions of Haylou Fun|

Turn on Bluetooth on your smartphone |

Disable VPN (can block sync servers)|

Reset the clock (click the 10 seconds button)

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2.Installation of the official Haylou Fun app

Haylou Fun is the only official way to control the watch, and can be downloaded:

• 🤖 For Android: from Google Play or Haylou (relevant to China).
• 🍎 For iOS: from the App Store.

After installation:

1. Open the app and select the language (Russian is available from version 3.1.5).
2. Register an account (via Google, Facebook or email) without an account, synchronization of data (steps, sleep) will not work.
3. Allow all application requests: access to contacts, notifications, geolocation and storage.

Important: On your iPhone, go to Settings → Haylou Fun → Notifications and manually turn on the “Show on the Lock screen” option. Otherwise, no call alerts will appear.

Android|

iOS|

Other (specify in the comments)

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3. Step-by-step instructions: how to connect Haylou LS02 to a phone

The algorithm for the connection is the same for both platforms, but there are nuances.

1. Activate the clock: Press and hold the physical button on the case LS02 for 3 seconds until the screen lights up. QR-code.
2. Turn on Bluetooth on your smartphone and make sure that the Charge Saving mode is turned off (it can block background synchronization).
3. Launch Haylou Fun and click "Add Device" (+ icon in the upper right corner).
4. Scanner. QR-Code: Point the phone camera at QR-If the scan fails, enter the 6-digit code manually (it is displayed under the watch screen). QR).
5. Confirmation of pairing: the clock will request connection — click the confirmation button. On the phone, allow access to contacts and notifications.

If the scanning stage QR-When you have a “failed to connect” error, try it:

• 🔄 Restart the clock (click the 10 seconds button).
• 📱 Remove Haylou LS02 from the list of conjugate devices in the Bluetooth settings of the phone and repeat the process.
• 📡 Switch the smartphone from 5G on 4G/LTE (Sometimes network settings interfere with synchronization).

4. Notification setting and data synchronization

Once the connection is successful, you need to set up alerts and background synchronization, without which the watch will not show incoming calls, SMS or messages from messengers.

In the Haylou Fun app, go to the section:

Device Profile → Notifications → Notifications Management

Here:

• 📞 Enable the option "Incoming calls" (on the iPhone will require additional permission in the settings of the system).
• 💬 Activate notifications for apps: WhatsApp, Telegram, Viber, etc. (you can select individual chats).
• ⏰ Set up “Alarm clocks” and “Sedit reminders” (default interval – 1 hour).

Important for iOS: On iPhone, notifications come with a delay of up to 5 minutes due to Apple restrictions.To reduce lag, in your phone settings, turn off Low Power Consumption mode and add Haylou Fun to the list of apps with Background Update.

5. firmware update: why it is critical for stable operation

Haylou firmware LS02 It affects the autonomy, accuracy of sensors and compatibility with new versions. Android/iOS. At the time of writing the current version — V1.2.8 (from 15.03.2026). You can check it in:

Haylou Fun → Device Profile → Update of the firmware

How to update:

1. Connect the watch to charge (charge level should be ≥50%).
2. Make sure your phone is connected to Wi-Fi (update via mobile internet may be interrupted).
3. In the app, click "Update" and wait until the process is completed (don't interrupt!).

Critical information: if during the firmware update the clock is disconnected from charging or communication with the phone is interrupted, the device may stop turning on, in which case you will need to flash through the service center using the service center. JTAG-cable (cost) ~1500₽).

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6. Common mistakes and their solutions

Even with the right connection, users face problems, and we have collected the TOP-5 errors and ways to fix them:

⚠️ Note: If the Haylou watch LS02 Not defined by the app after a few attempts, reset them to factory settings. → Device profile → Reset. All data (steps, sleep) will be deleted!

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7. Alternative ways of connection (without an official annex)

If Haylou Fun is not installed or permanently crashes, you can use the application side for basic control:

• 🤖 Notify & Fitness for Haylou (Android only) - supports notifications, pedometer and sleep monitoring.
• 🍎 Mi Fit (for iOS) – partial compatibility, but without support for unique features LS02 (for example, SpO2).

Limitations of alternative applications:

• ❌ No firmware update.
• ❌ The branded dials are not working.
• ❌ Sleep and exercise data may not be displayed correctly.

To connect via Notify & Fitness:

1. Install the application and resolve all requests.
2. Turn on the clock pairing mode (hold the button until it appears). QR-code).
3. In the app, select the Haylou LS02 model and follow the instructions on the screen.

8. Frequent User Questions (FAQ)