Why Samsung Watches Are Switching Off Xiaomi Phone: A Complete Discussion of Causes and Solutions

You have noticed that your Samsung Galaxy Watch 4/5/6 Galaxy Watch Active periodically breaks the connection with the Xiaomi phone (Redmi series, POCO The problem is not uncommon: according to service centers, it is not uncommon to 15% Users are faced with spontaneous disconnection of watches from smartphones based on MIUI. In this article, we will discuss 7 Key reasons for this behavior – from basic settings to hidden firmware conflicts – and give step-by-step instructions for restoring stable communication.

The peculiarity of the problem is that it occurs even on new devices: for example, owners of the Galaxy Watch 6 Classic complain of blackouts when paired with a connection to the Xiaomi 13 Ultra, although both gadgets support Bluetooth 5.3. It’s not just about crooked hands – energy saving protocols are often to blame. MIUI, conflicting with Wear algorithms OS. We tested the solutions on 5 pairs of devices and identified patterns that will help to return stable synchronization.

The Bluetooth Protocol Conflict: Why MIUI "cut

The main reason for the shutdowns is the difference in implementations of the Bluetooth stack from Samsung and Xiaomi. MIUI It aggressively optimizes power consumption by suspending background processes, including connecting to wearables. OS (The Galaxy Watch is waiting for a constant communication channel to synchronize notifications and health data.

Technically, the problem is as follows:

• 🔵 Bluetooth Low Energy (BLE) — The clock is in a low energy mode, but MIUI Completely terminates the connection after 5-10 minutes without activity.
• 🔴 Caching of the connecting keys - after updating MIUI or OS Old encryption keys become invalid, but the system does not initialize the new handshake.
• 🟢 Channel competition – if another Bluetooth device is active on the phone (e.g. headphones), MIUI Prioritizes it by turning off the clock.

The solution lies in manually configuring the Bluetooth profile.

1. Open the Settings. → Connections → Bluetooth on Xiaomi phone.
2. Find your Galaxy Watch in the list of conjugate devices and tap the gear settings.
3. Turn off the option “Automatic Shutdown in Omission” (if any) or “Energy Optimization”.
4. Enable "Priority Connection" (in some versions) MIUI This item is hidden - see spoiler below).

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If after these manipulations the clock is still turned off, try to "forget" the device on both gadgets and re-embed them, having previously turned off the power saving mode on the phone.

Energy-saving regimes MIUI: How they break the connection to the clock

Xiaomi is known for its aggressive approach to battery optimization, and this directly affects the stability of the connection with the Galaxy Watch. In the modes of "Saving charge" or "Ultra-long autonomy", the system blocks background activity of the Galaxy Wearable application, which leads to a disconnection of communication. The problem is exacerbated on phones with Snapdragon processors 8 Gen 2/3 — Their power management algorithms are more stringent.

Here are the settings you need to check:

To add Galaxy Wearable to the exceptions:

1. Go to Settings → Battery and Performance → Battery Consumption Management by Apps.
2. Find Galaxy Wearable in the list and select "No Limits".
3. Do the same for Google Play Services (it is responsible for syncing notifications).

Regular regime|Saving charge|Extremely long-term autonomy|Adaptive regime|I don't know.-->

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Even in the "normal" mode" MIUI Always check your optimization settings for the Galaxy Wearable app after system updates.

3.Galaxy Wearable app problems: synchronization errors

The Galaxy Wearable app itself (especially versions 2.2.10–2.2.15) contains bugs that appear when working with phones on the phone. MIUI. For example, after the Wear update OS 4.0: Many users have experienced the Galaxy Watch 5 Pro turning off when trying to synchronize sleep or workout data, due to a data protocol conflict between Samsung Health and Google Fit.

Symptoms of application malfunction:

• ⚠️ The clock is connected, but after 1-2 minutes a notification appears "Device is disabled".
• ⚠️ Galaxy Wearable magazine has bugs like “Synchronization failed” (code 5002)".
• ⚠️ Samsung Health app doesn't update heart rate or steps.

Solutions (try in order):

Clear the application cache in Settings → Annexes → Galaxy Wearable → Memory.|Remove application updates (return to factory version)|Reinstall Galaxy Wearable and Samsung Health from Google Play|Turn off sync with Google Fit in Samsung Health settings-->

If nothing works, try an alternative method of connecting via Google Clock (works on Wear). OS 3/4):

1. Install the Google Clock app on your phone via the Play Market.
2. In the clock settings, select Connection → Use Google Clock for notifications.
3. Turn off background sync in Galaxy Wearable.

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After reinstalling the Galaxy Wearable, don't update it right away - check the stability of the connection throughout the day.Sometimes the latest versions contain new bugs.

4. Conflicts with other Bluetooth devices

If your Xiaomi phone is connected to multiple Bluetooth gadgets (earbuds, speakers, fitness bracelets), the system can prioritize them by turning off the watch.+ Gen 1 and later, which uses dynamic distribution of Bluetooth channels. For example, when listening to music through the Xiaomi Buds 4 Pro, the Galaxy Watch 6 watch can lose connection every 3-7 minutes.

How to check and correct:

1. Open Settings → Connections → Bluetooth.
2. Look at how many devices are connected at once. If you have more than 2-3, turn off the extra ones.
3. Turn on the Priority for Watch mode (if available) or manually disable other devices.

Critical feature: on Xiaomi phones with a MediaTek chipset (for example, Redmi Note 12 Pro)+) Only one device with a profile can work at the same time. A2DP (If you're listening to music over the clock, turn off all other audio devices.

5. firmware updates: when patches break compatibility

After major updates MIUI (for example, transition MIUI 13 on MIUI 14) or Wear OS (There are often compatibility issues, because Samsung and Xiaomi use different Bluetooth stacks and data exchange protocols. MIUI 14.0.5 there was a bug, which caused the Galaxy Watch 4 to turn off when trying to transmit data about the device. SpO2 (oxygenation).

How to check if the update is to blame:

• 📱 Check the date of the last update. MIUI In Settings → The phone. → Updating the system.
• ⌚ Compare the date of the last clock sync in Galaxy Wearable → Device information.
• 🔍 Check the forums (for example, 4PDA or Reddit for complaints about your version MIUI + clockwork.

Decisions:

1. Reverse update (if the problem has recently occurred):
2. Manual installation of the compatibility patch (for advanced users):

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Before rolling back the firmware, back up the data through Settings → Additionally. → Backup and reset. Some versions MIUI Reset Bluetooth settings after downgrade.

Hardware problems: when the "iron" is to blame

If software methods do not help, the reason may lie in hardware malfunctions:

• 📶 Weak Bluetooth module in the phone (often found in the Redmi Note) 10/11 fall-out).
• 🔋 Worn-out battery in hours (at a discharge below 15% Wear) OS shut off).
• 📡 Interference from other devices (e.g., wireless charging or routers at 2.4 GHz).

How to diagnose:

If you suspect a malfunction of the Bluetooth module in the Xiaomi phone, do the following test:

1. Install the Bluetooth Test app from Google Play.
2. Start scanning devices within a radius of 10 meters.
3. If the phone does not find even close-by gadgets (for example, headphones at a distance of 1 meter), the module is defective.

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If the watch is turned off when it's low, try resetting the battery counter: discharge it to 0%, then charge it to 100% without interruption, sometimes restoring the power controller to work properly.

Alternative methods of connection: workarounds

If standard pairing doesn’t work, try alternative methods:

Method 1: Connecting through Samsung Flow

Samsung Flow app allows you to avoid restrictions MIUI Using Wi-Fi Direct:

1. Install Samsung Flow on your phone and watch.
2. Turn on Wi-Fi and Bluetooth on both devices.
3. In Samsung Flow, select “Connect New Device” and follow the instructions.

Method 2: Use of third-party launchers

Some launchers (such as Nova Launcher or Hyperion Launcher) allow you to bypass restrictions. MIUI - to background activity:

1. Set the default launcher.
2. In the launcher settings, turn off optimization for Galaxy Wearable.
3. Reboot the phone.

Method 3: ADB-commands to disable optimization

For experienced users: you can manually disable optimization through ADB:

adb shell dumpsys deviceidle whitelist +com.samsung.android.app.watchmanager


adb shell dumpsys deviceidle whitelist +com.sec.android.app.health

After completing the commands, restart the phone.

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Alternative connectivity methods can reduce the autonomy of the watch by 10 to 15 percent, but provide a stable connection.

FAQ: Frequent questions about disconnecting Samsung watches from Xiaomi