How to connect a smart watch to the phone Xiaomi Redmi 9: full instruction with photos and tips

Smartwatches have become an integral part of everyday life — they monitor health, display notifications and even replace the wallet. But to make all these functions work, you need to connect the gadget to the smartphone. Xiaomi Redmi 9 owners often face questions: what software to use, how to avoid synchronization errors and what to do if the clock is not determined by the phone. In this article, we will examine all the nuances of connection, from choosing an application to fine-tuning notifications.

The Redmi 9 is powered by MIUI (usually version 12-14), which has its limitations on the background of applications, which can affect the stability of the connection with the watch, and not all smartwatch models are compatible with this smartphone out of the box. We tested the connection on popular models — Xiaomi Mi Band 7 Pro, Amazfit GTS 4 and Haylou Solar 2 — to give universal recommendations.

1.What smart watch is compatible with Xiaomi Redmi 9

Before buying a smartwatch, it is important to make sure that it supports the Redmi 9.

• 📱 Operating system of the phone: Redmi 9 It works on Android 10/11 shelled MIUI. Most of the modern clocks support Android. 6.0+, But for full work you need a version not lower 8.0.
• 🔵 Bluetooth Version: The watch should support Bluetooth 4.2 or later. Redmi 9 is equipped with Bluetooth 5.0 module, which provides a stable connection.
• 📲 Watchmaker: the best choice is devices from Xiaomi (Mi Band, Watch), Amazfit or Haylou, as they use proprietary applications (Mi Fit, Zepp Life).

Below is the compatibility table of popular models with Redmi 9:

Important: Watches on Wear OS (such as the Samsung Galaxy Watch) are not officially supported by Redmi 9 due to manufacturer restrictions, and will require a workaround through third-party apps like Notify & Fitness to connect, but this can be fraught with instability.

2. Preparation of the phone before connection

To avoid synchronization errors, you need to configure Redmi 9 in advance.

1. Update your firmware: go to Settings → About Phone → Update your system and install the latest version of MIUI. This will fix Bluetooth bugs.
2. Turn on Bluetooth and geolocation: The watch often requires location access to work properly (e.g., to count steps). Activate both modules in the Quick Settings Panel.
3. Allow background activity: Go to Settings → Applications → Application Management, find a watch program (like Mi Fit) and enable AutoRun and Background Activity.

⚠️ Attention: If you are using MIUI 12.5+, Turn on also Show notifications for the watch app in the notification settings. Otherwise, messages from messengers will not be duplicated on the watch.

Update MIUI last-minute|Enable Bluetooth and geolocation|Allow auto-run of the watch app|Clear the Bluetooth cache (Settings) → Connections → Bluetooth → ⚙️ → Clear the cache)-->

3. Step-by-step instructions: how to connect the watch to Redmi 9

Consider the universal algorithm on the example of Xiaomi Mi Band 7 and Mi Fit application (relevant also for Zepp Life):

1. Install the app: Download Mi Fit from Google Play or Zepp Life (for Amazfit). Avoid third-party APKs - they may contain viruses.
2. Sign up or sign in: Use a Xiaomi account (if not, create through Settings → Accounts → Xiaomi).
3. Activate Bluetooth on the watch: On most models, you need to press the button on the case until vibration or swipe down on the screen and select the Bluetooth icon.
4. Add the device in the app: In Mi Fit, click Profile → Add the device. Select your model from the list. If the watch is not listed, try the Other device option.
5. Confirm pairing: A code (e.g. 123456) will appear on the phone screen. Compare it to the code on the watch and confirm the connection.

⚠️ Note: If the clock is permanently turned off after connecting, check the settings of the Redmi 9 battery. → Battery. → Select Power Mode No restrictions for the watch application.

4. Notification setting and data synchronization

By default, the watch only shows basic notifications (calls, SMS) to set up duplicate messages from instant messengers:

1. Open the watch app (such as Mi Fit).
2. Go to Profile. → [Your watch] → Notifications.
3. Turn on the Display Notifications switch.
4. Select applications that need to be duplicated (e.g. WhatsApp, Telegram).
5. In MIUI settings, allow the watch app to access notifications: Settings → Notifications → Application permissions.

To synchronize health data (steps, pulse, sleep):

• 🩺 Turn on Continuous Monitoring in the clock settings (battery discharge will accelerate by 10-15%).
• 🔄 Install automatic sync in the app (usually in the Health Data section).
• ☁️ Link your Google Fit or Apple Health account (if you need to export your data to other services).

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If notifications come with a delay, in the MIUI settings add the watch app to No Battery Restrictions and disable Adaptive Optimization for it.

5. Solving common problems

Even after a successful connection, Redmi 9 users may encounter errors, and we will discuss typical cases and ways to fix them:

If the Amazfit or Haylou watches don’t sync your sleep data, check:

• 🔋 Charge level of the clock (below 20% synchronization may be blocked).
• 📶 Internet connection stability (data is uploaded to the manufacturer's server).
• ⏳ Time on the clock and phone (a difference of more than 5 minutes leads to crashes).

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If after all the manipulations the watch still does not work stably, try to reset them to factory settings (usually through Settings → System → Reset on the watch itself) and reconnect.

6. Alternative ways of connecting

If the branded app is not suitable (for example, for Huawei or Samsung watches), you can use universal programs:

• 🔄 Notify & Fitness: supports most smartwatches but requires manual notification settings.link to Google Play.
• 📊 Tools & Mi Band: Mi Fit alternative with advanced settings (e.g. screen customization).
• 🔌 Gadgetbridge: Nordic Semiconductor-based open source watch software (suitable for Mi Band older than 5th version).

To connect via Notify & Fitness:

1. Install the application and provide all the permissions requested.
2. Turn on the Developer Mode on the clock (usually after 5-10 taps by the version number in the settings).
3. In Notify & Fitness, select Add Device → Bluetooth LE and follow the instructions.

⚠️ Note: Third-party apps may not support all of the original software’s features (e.g., payments via Mi Pay or Xiao voice assistant). AI). They also often require more rights, which can affect security.

7. Optimization of the watch with Redmi 9

To extend the operating hours and improve connection stability:

• 🔋 Turn off unnecessary notifications: leave only critical (calls, SMS, 1-2 messengers. Each notification drains the clock battery by 1-3%.
• 🔄 Set the synchronization frequency: Set the data update interval in the watch app (e.g., every 30 minutes instead of constant synchronization).
• 📴 Use a flight mode on the clock at night: this will save up to 20% of charge if you do not need sleep monitoring.
• 🔒 Block the optimization of the application: in Settings → Battery. → Battery Optimization Select All Applications → [Appendix of the clock] → Not optimize.

For models with AMOLED-screen (e.g. Amazfit) GTR (4) install:

• 🌓 Dark theme on the clock (saves up to 15% charge).
• ⏱️ Lighting time: 5-7 seconds instead of 15.
• 🎨 Static dials instead of animated.

FAQ: Frequent questions about connectivity